Mercurial > hg
view tests/test-setdiscovery.t @ 49275:c6a3243567b6
chg: replace mercurial.util.recvfds() by simpler pure Python implementation
On Python 3, we have socket.socket.recvmsg(). This makes it possible to receive
FDs in pure Python code. The new code behaves like the previous
implementations, except that it’s more strict about the format of the ancillary
data. This works because we know in which format the FDs are passed.
Because the code is (and always has been) specific to chg (payload is 1 byte,
number of passed FDs is limited) and we now have only one implementation and
the code is very short, I decided to stop exposing a function in
mercurial.util.
Note on terminology: The SCM_RIGHTS mechanism is used to share open file
descriptions to another process over a socket. The sending side passes an array
of file descriptors and the receiving side receives an array of file
descriptors. The file descriptors are different in general on both sides but
refer to the same open file descriptions. The two terms are often conflated,
even in the official documentation. That’s why I used “FD” above, which could
mean both “file descriptor” and “file description”.
| author | Manuel Jacob <me@manueljacob.de> |
|---|---|
| date | Thu, 02 Jun 2022 23:57:56 +0200 |
| parents | f054a557aab8 |
| children | 362c0026a977 |
line wrap: on
line source
Function to test discovery between two repos in both directions, using both the local shortcut (which is currently not activated by default) and the full remotable protocol: $ testdesc() { # revs_a, revs_b, dagdesc > if [ -d foo ]; then rm -rf foo; fi > hg init foo > cd foo > hg debugbuilddag "$3" > hg clone . a $1 --quiet > hg clone . b $2 --quiet > echo > echo "% -- a -> b tree" > hg -R a debugdiscovery b --verbose --old > echo > echo "% -- a -> b set" > hg -R a debugdiscovery b --verbose --debug --config progress.debug=true > echo > echo "% -- a -> b set (tip only)" > hg -R a debugdiscovery b --verbose --debug --config progress.debug=true --rev tip > echo > echo "% -- b -> a tree" > hg -R b debugdiscovery a --verbose --old > echo > echo "% -- b -> a set" > hg -R b debugdiscovery a --verbose --debug --config progress.debug=true > echo > echo "% -- b -> a set (tip only)" > hg -R b debugdiscovery a --verbose --debug --config progress.debug=true --rev tip > cd .. > } Small superset: $ testdesc '-ra1 -ra2' '-rb1 -rb2 -rb3' ' > +2:f +1:a1:b1 > <f +4 :a2 > +5 :b2 > <f +3 :b3' % -- a -> b tree comparing with b searching for changes unpruned common: 01241442b3c2 66f7d451a68b b5714e113bc0 elapsed time: * seconds (glob) round-trips: 2 queries: 6 heads summary: total common heads: 2 also local heads: 2 also remote heads: 1 both: 1 local heads: 2 common: 2 missing: 0 remote heads: 3 common: 1 unknown: 2 local changesets: 7 common: 7 heads: 2 roots: 1 missing: 0 heads: 0 roots: 0 first undecided set: 3 heads: 1 roots: 1 common: 3 missing: 0 common heads: 01241442b3c2 b5714e113bc0 % -- a -> b set comparing with b query 1; heads searching for changes all local changesets known remotely elapsed time: * seconds (glob) round-trips: 1 queries: 2 heads summary: total common heads: 2 also local heads: 2 also remote heads: 1 both: 1 local heads: 2 common: 2 missing: 0 remote heads: 3 common: 1 unknown: 2 local changesets: 7 common: 7 heads: 2 roots: 1 missing: 0 heads: 0 roots: 0 first undecided set: 3 heads: 1 roots: 1 common: 3 missing: 0 common heads: 01241442b3c2 b5714e113bc0 % -- a -> b set (tip only) comparing with b query 1; heads searching for changes all local changesets known remotely elapsed time: * seconds (glob) round-trips: 1 queries: 1 heads summary: total common heads: 1 also local heads: 1 also remote heads: 0 both: 0 local heads: 2 common: 1 missing: 1 remote heads: 3 common: 0 unknown: 3 local changesets: 7 common: 6 heads: 1 roots: 1 missing: 1 heads: 1 roots: 1 first undecided set: 6 heads: 2 roots: 1 common: 5 missing: 1 common heads: b5714e113bc0 % -- b -> a tree comparing with a searching for changes unpruned common: 01241442b3c2 b5714e113bc0 elapsed time: * seconds (glob) round-trips: 1 queries: 0 heads summary: total common heads: 2 also local heads: 1 also remote heads: 2 both: 1 local heads: 3 common: 1 missing: 2 remote heads: 2 common: 2 unknown: 0 local changesets: 15 common: 7 heads: 2 roots: 1 missing: 8 heads: 2 roots: 2 first undecided set: 8 heads: 2 roots: 2 common: 0 missing: 8 common heads: 01241442b3c2 b5714e113bc0 % -- b -> a set comparing with a query 1; heads searching for changes all remote heads known locally elapsed time: * seconds (glob) round-trips: 1 queries: 3 heads summary: total common heads: 2 also local heads: 1 also remote heads: 2 both: 1 local heads: 3 common: 1 missing: 2 remote heads: 2 common: 2 unknown: 0 local changesets: 15 common: 7 heads: 2 roots: 1 missing: 8 heads: 2 roots: 2 first undecided set: 8 heads: 2 roots: 2 common: 0 missing: 8 common heads: 01241442b3c2 b5714e113bc0 % -- b -> a set (tip only) comparing with a query 1; heads searching for changes all remote heads known locally elapsed time: * seconds (glob) round-trips: 1 queries: 1 heads summary: total common heads: 2 also local heads: 1 also remote heads: 2 both: 1 local heads: 3 common: 1 missing: 2 remote heads: 2 common: 2 unknown: 0 local changesets: 15 common: 7 heads: 2 roots: 1 missing: 8 heads: 2 roots: 2 first undecided set: 8 heads: 2 roots: 2 common: 0 missing: 8 common heads: 01241442b3c2 b5714e113bc0 Many new: $ testdesc '-ra1 -ra2' '-rb' ' > +2:f +3:a1 +3:b > <f +30 :a2' % -- a -> b tree comparing with b searching for changes unpruned common: bebd167eb94d elapsed time: * seconds (glob) round-trips: 2 queries: 3 heads summary: total common heads: 1 also local heads: 1 also remote heads: 0 both: 0 local heads: 2 common: 1 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 35 common: 5 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 34 heads: 2 roots: 1 common: 4 missing: 30 common heads: bebd167eb94d % -- a -> b set comparing with b query 1; heads searching for changes taking initial sample searching: 2 queries query 2; still undecided: 29, sample size is: 29 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 31 heads summary: total common heads: 1 also local heads: 1 also remote heads: 0 both: 0 local heads: 2 common: 1 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 35 common: 5 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 34 heads: 2 roots: 1 common: 4 missing: 30 common heads: bebd167eb94d % -- a -> b set (tip only) comparing with b query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 31, sample size is: 31 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 32 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 2 common: 0 missing: 2 remote heads: 1 common: 0 unknown: 1 local changesets: 35 common: 2 heads: 1 roots: 1 missing: 33 heads: 2 roots: 2 first undecided set: 35 heads: 2 roots: 1 common: 2 missing: 33 common heads: 66f7d451a68b % -- b -> a tree comparing with a searching for changes unpruned common: 66f7d451a68b bebd167eb94d elapsed time: * seconds (glob) round-trips: 4 queries: 5 heads summary: total common heads: 1 also local heads: 0 also remote heads: 1 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 2 common: 1 unknown: 1 local changesets: 8 common: 5 heads: 1 roots: 1 missing: 3 heads: 1 roots: 1 first undecided set: 3 heads: 1 roots: 1 common: 0 missing: 3 common heads: bebd167eb94d % -- b -> a set comparing with a query 1; heads searching for changes taking initial sample searching: 2 queries query 2; still undecided: 2, sample size is: 2 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 3 heads summary: total common heads: 1 also local heads: 0 also remote heads: 1 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 2 common: 1 unknown: 1 local changesets: 8 common: 5 heads: 1 roots: 1 missing: 3 heads: 1 roots: 1 first undecided set: 3 heads: 1 roots: 1 common: 0 missing: 3 common heads: bebd167eb94d % -- b -> a set (tip only) comparing with a query 1; heads searching for changes taking initial sample searching: 2 queries query 2; still undecided: 2, sample size is: 2 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 3 heads summary: total common heads: 1 also local heads: 0 also remote heads: 1 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 2 common: 1 unknown: 1 local changesets: 8 common: 5 heads: 1 roots: 1 missing: 3 heads: 1 roots: 1 first undecided set: 3 heads: 1 roots: 1 common: 0 missing: 3 common heads: bebd167eb94d Both sides many new with stub: $ testdesc '-ra1 -ra2' '-rb' ' > +2:f +2:a1 +30 :b > <f +30 :a2' % -- a -> b tree comparing with b searching for changes unpruned common: 2dc09a01254d elapsed time: * seconds (glob) round-trips: 4 queries: 5 heads summary: total common heads: 1 also local heads: 1 also remote heads: 0 both: 0 local heads: 2 common: 1 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 34 common: 4 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 33 heads: 2 roots: 1 common: 3 missing: 30 common heads: 2dc09a01254d % -- a -> b set comparing with b query 1; heads searching for changes taking initial sample searching: 2 queries query 2; still undecided: 29, sample size is: 29 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 31 heads summary: total common heads: 1 also local heads: 1 also remote heads: 0 both: 0 local heads: 2 common: 1 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 34 common: 4 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 33 heads: 2 roots: 1 common: 3 missing: 30 common heads: 2dc09a01254d % -- a -> b set (tip only) comparing with b query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 31, sample size is: 31 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 32 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 2 common: 0 missing: 2 remote heads: 1 common: 0 unknown: 1 local changesets: 34 common: 2 heads: 1 roots: 1 missing: 32 heads: 2 roots: 2 first undecided set: 34 heads: 2 roots: 1 common: 2 missing: 32 common heads: 66f7d451a68b % -- b -> a tree comparing with a searching for changes unpruned common: 2dc09a01254d 66f7d451a68b elapsed time: * seconds (glob) round-trips: 4 queries: 5 heads summary: total common heads: 1 also local heads: 0 also remote heads: 1 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 2 common: 1 unknown: 1 local changesets: 34 common: 4 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 30 heads: 1 roots: 1 common: 0 missing: 30 common heads: 2dc09a01254d % -- b -> a set comparing with a query 1; heads searching for changes taking initial sample searching: 2 queries query 2; still undecided: 29, sample size is: 29 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 30 heads summary: total common heads: 1 also local heads: 0 also remote heads: 1 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 2 common: 1 unknown: 1 local changesets: 34 common: 4 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 30 heads: 1 roots: 1 common: 0 missing: 30 common heads: 2dc09a01254d % -- b -> a set (tip only) comparing with a query 1; heads searching for changes taking initial sample searching: 2 queries query 2; still undecided: 29, sample size is: 29 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 30 heads summary: total common heads: 1 also local heads: 0 also remote heads: 1 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 2 common: 1 unknown: 1 local changesets: 34 common: 4 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 30 heads: 1 roots: 1 common: 0 missing: 30 common heads: 2dc09a01254d Both many new: $ testdesc '-ra' '-rb' ' > +2:f +30 :b > <f +30 :a' % -- a -> b tree comparing with b searching for changes unpruned common: 66f7d451a68b elapsed time: * seconds (glob) round-trips: 4 queries: 5 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 32 common: 2 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 32 heads: 1 roots: 1 common: 2 missing: 30 common heads: 66f7d451a68b % -- a -> b set comparing with b query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 31, sample size is: 31 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 32 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 32 common: 2 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 32 heads: 1 roots: 1 common: 2 missing: 30 common heads: 66f7d451a68b % -- a -> b set (tip only) comparing with b query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 31, sample size is: 31 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 32 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 32 common: 2 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 32 heads: 1 roots: 1 common: 2 missing: 30 common heads: 66f7d451a68b % -- b -> a tree comparing with a searching for changes unpruned common: 66f7d451a68b elapsed time: * seconds (glob) round-trips: 4 queries: 5 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 32 common: 2 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 32 heads: 1 roots: 1 common: 2 missing: 30 common heads: 66f7d451a68b % -- b -> a set comparing with a query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 31, sample size is: 31 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 32 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 32 common: 2 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 32 heads: 1 roots: 1 common: 2 missing: 30 common heads: 66f7d451a68b % -- b -> a set (tip only) comparing with a query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 31, sample size is: 31 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 32 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 32 common: 2 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 32 heads: 1 roots: 1 common: 2 missing: 30 common heads: 66f7d451a68b Both many new skewed: $ testdesc '-ra' '-rb' ' > +2:f +30 :b > <f +50 :a' % -- a -> b tree comparing with b searching for changes unpruned common: 66f7d451a68b elapsed time: * seconds (glob) round-trips: 4 queries: 5 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 52 common: 2 heads: 1 roots: 1 missing: 50 heads: 1 roots: 1 first undecided set: 52 heads: 1 roots: 1 common: 2 missing: 50 common heads: 66f7d451a68b % -- a -> b set comparing with b query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 51, sample size is: 51 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 52 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 52 common: 2 heads: 1 roots: 1 missing: 50 heads: 1 roots: 1 first undecided set: 52 heads: 1 roots: 1 common: 2 missing: 50 common heads: 66f7d451a68b % -- a -> b set (tip only) comparing with b query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 51, sample size is: 51 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 52 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 52 common: 2 heads: 1 roots: 1 missing: 50 heads: 1 roots: 1 first undecided set: 52 heads: 1 roots: 1 common: 2 missing: 50 common heads: 66f7d451a68b % -- b -> a tree comparing with a searching for changes unpruned common: 66f7d451a68b elapsed time: * seconds (glob) round-trips: 3 queries: 4 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 32 common: 2 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 32 heads: 1 roots: 1 common: 2 missing: 30 common heads: 66f7d451a68b % -- b -> a set comparing with a query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 31, sample size is: 31 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 32 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 32 common: 2 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 32 heads: 1 roots: 1 common: 2 missing: 30 common heads: 66f7d451a68b % -- b -> a set (tip only) comparing with a query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 31, sample size is: 31 2 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 2 queries: 32 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 32 common: 2 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 32 heads: 1 roots: 1 common: 2 missing: 30 common heads: 66f7d451a68b Both many new on top of long history: $ testdesc '-ra' '-rb' ' > +1000:f +30 :b > <f +50 :a' % -- a -> b tree comparing with b searching for changes unpruned common: 7ead0cba2838 elapsed time: * seconds (glob) round-trips: 4 queries: 5 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 1050 common: 1000 heads: 1 roots: 1 missing: 50 heads: 1 roots: 1 first undecided set: 1050 heads: 1 roots: 1 common: 1000 missing: 50 common heads: 7ead0cba2838 % -- a -> b set comparing with b query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 1049, sample size is: 11 sampling from both directions searching: 3 queries query 3; still undecided: 31, sample size is: 31 3 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 3 queries: 43 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 1050 common: 1000 heads: 1 roots: 1 missing: 50 heads: 1 roots: 1 first undecided set: 1050 heads: 1 roots: 1 common: 1000 missing: 50 common heads: 7ead0cba2838 % -- a -> b set (tip only) comparing with b query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 1049, sample size is: 11 sampling from both directions searching: 3 queries query 3; still undecided: 31, sample size is: 31 3 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 3 queries: 43 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 1050 common: 1000 heads: 1 roots: 1 missing: 50 heads: 1 roots: 1 first undecided set: 1050 heads: 1 roots: 1 common: 1000 missing: 50 common heads: 7ead0cba2838 % -- b -> a tree comparing with a searching for changes unpruned common: 7ead0cba2838 elapsed time: * seconds (glob) round-trips: 3 queries: 4 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 1030 common: 1000 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 1030 heads: 1 roots: 1 common: 1000 missing: 30 common heads: 7ead0cba2838 % -- b -> a set comparing with a query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 1029, sample size is: 11 sampling from both directions searching: 3 queries query 3; still undecided: 15, sample size is: 15 3 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 3 queries: 27 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 1030 common: 1000 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 1030 heads: 1 roots: 1 common: 1000 missing: 30 common heads: 7ead0cba2838 % -- b -> a set (tip only) comparing with a query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 1029, sample size is: 11 sampling from both directions searching: 3 queries query 3; still undecided: 15, sample size is: 15 3 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 3 queries: 27 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 1 common: 0 missing: 1 remote heads: 1 common: 0 unknown: 1 local changesets: 1030 common: 1000 heads: 1 roots: 1 missing: 30 heads: 1 roots: 1 first undecided set: 1030 heads: 1 roots: 1 common: 1000 missing: 30 common heads: 7ead0cba2838 One with >200 heads. We now switch to send them all in the initial roundtrip, but still do sampling for the later request. $ hg init manyheads $ cd manyheads $ echo "+300:r @a" >dagdesc $ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads $ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads $ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads $ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads $ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads $ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads $ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads $ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads $ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads $ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads $ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads $ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads $ echo "*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3 *r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3*r+3" >>dagdesc # 20 heads $ echo "@b *r+3" >>dagdesc # one more head $ hg debugbuilddag <dagdesc reading DAG from stdin $ hg heads -t --template . | wc -c \s*261 (re) $ hg clone -b a . a adding changesets adding manifests adding file changes added 1340 changesets with 0 changes to 0 files (+259 heads) new changesets 1ea73414a91b:1c51e2c80832 updating to branch a 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg clone -b b . b adding changesets adding manifests adding file changes added 304 changesets with 0 changes to 0 files new changesets 1ea73414a91b:513314ca8b3a updating to branch b 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg -R a debugdiscovery b --debug --verbose --config progress.debug=true --config devel.discovery.randomize=false --config devel.discovery.sample-size.initial=50 comparing with b query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 1080, sample size is: 50 sampling from both directions searching: 3 queries query 3; still undecided: 1030, sample size is: 200 sampling from both directions searching: 4 queries query 4; still undecided: 547, sample size is: 210 sampling from both directions searching: 5 queries query 5; still undecided: 336, sample size is: 220 sampling from both directions searching: 6 queries query 6; still undecided: 114, sample size is: 114 6 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 6 queries: 1054 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 260 common: 0 missing: 260 remote heads: 1 common: 0 unknown: 1 local changesets: 1340 common: 300 heads: 1 roots: 1 missing: 1040 heads: 260 roots: 260 first undecided set: 1340 heads: 260 roots: 1 common: 300 missing: 1040 common heads: 3ee37d65064a $ hg -R a debugdiscovery b --debug --verbose --config progress.debug=true --rev tip comparing with b query 1; heads searching for changes taking quick initial sample searching: 2 queries query 2; still undecided: 303, sample size is: 9 sampling from both directions searching: 3 queries query 3; still undecided: 3, sample size is: 3 3 total queries in *.????s (glob) elapsed time: * seconds (glob) round-trips: 3 queries: 13 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 260 common: 0 missing: 260 remote heads: 1 common: 0 unknown: 1 local changesets: 1340 common: 300 heads: 1 roots: 1 missing: 1040 heads: 260 roots: 260 first undecided set: 1340 heads: 260 roots: 1 common: 300 missing: 1040 common heads: 3ee37d65064a $ hg -R a debugdiscovery b --debug --config devel.discovery.exchange-heads=false --config devel.discovery.randomize=false --config devel.discovery.grow-sample.rate=1.20 --config devel.discovery.sample-size=50 comparing with b searching for changes sampling from both directions query 1; still undecided: 1340, sample size is: 50 sampling from both directions query 2; still undecided: 995, sample size is: 60 sampling from both directions query 3; still undecided: 913, sample size is: 72 sampling from both directions query 4; still undecided: 816, sample size is: 204 sampling from both directions query 5; still undecided: 612, sample size is: 153 sampling from both directions query 6; still undecided: 456, sample size is: 123 sampling from both directions query 7; still undecided: 332, sample size is: 147 sampling from both directions query 8; still undecided: 184, sample size is: 176 sampling from both directions query 9; still undecided: 8, sample size is: 8 9 total queries in *s (glob) elapsed time: * seconds (glob) round-trips: 9 queries: 993 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 260 common: 0 missing: 260 remote heads: 1 common: 0 unknown: 1 local changesets: 1340 common: 300 heads: 1 roots: 1 missing: 1040 heads: 260 roots: 260 first undecided set: 1340 heads: 260 roots: 1 common: 300 missing: 1040 common heads: 3ee37d65064a Test actual protocol when pulling one new head in addition to common heads $ hg clone -U b c $ hg -R c id -ir tip 513314ca8b3a $ hg -R c up -qr default $ touch c/f $ hg -R c ci -Aqm "extra head" $ hg -R c id -i e64a39e7da8b $ hg serve -R c -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log $ cat hg.pid >> $DAEMON_PIDS $ hg -R b incoming http://localhost:$HGPORT/ -T '{node|short}\n' comparing with http://localhost:$HGPORT/ searching for changes e64a39e7da8b $ killdaemons.py $ cut -d' ' -f6- access.log | grep -v cmd=known # cmd=known uses random sampling "GET /?cmd=capabilities HTTP/1.1" 200 - "GET /?cmd=batch HTTP/1.1" 200 - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D513314ca8b3ae4dac8eec56966265b00fcf866db x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull "GET /?cmd=getbundle HTTP/1.1" 200 - x-hgarg-1:$USUAL_BUNDLE_CAPS$&cg=1&common=513314ca8b3ae4dac8eec56966265b00fcf866db&heads=e64a39e7da8b0d54bc63e81169aff001c13b3477 x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=phases x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull $ cat errors.log $ cd .. Issue 4438 - test coverage for 3ef893520a85 issues. $ mkdir issue4438 $ cd issue4438 #if false generate new bundles: $ hg init r1 $ for i in `"$PYTHON" $TESTDIR/seq.py 101`; do hg -R r1 up -qr null && hg -R r1 branch -q b$i && hg -R r1 ci -qmb$i; done $ hg clone -q r1 r2 $ for i in `"$PYTHON" $TESTDIR/seq.py 10`; do hg -R r1 up -qr null && hg -R r1 branch -q c$i && hg -R r1 ci -qmc$i; done $ hg -R r2 branch -q r2change && hg -R r2 ci -qmr2change $ hg -R r1 bundle -qa $TESTDIR/bundles/issue4438-r1.hg $ hg -R r2 bundle -qa $TESTDIR/bundles/issue4438-r2.hg #else use existing bundles: $ hg init r1 $ hg -R r1 -q unbundle $TESTDIR/bundles/issue4438-r1.hg $ hg -R r1 -q up $ hg init r2 $ hg -R r2 -q unbundle $TESTDIR/bundles/issue4438-r2.hg $ hg -R r2 -q up #endif Set iteration order could cause wrong and unstable results - fixed in 73cfaa348650: $ hg -R r1 outgoing r2 -T'{rev} ' comparing with r2 searching for changes 101 102 103 104 105 106 107 108 109 110 (no-eol) The case where all the 'initialsamplesize' samples already were common would give 'all remote heads known locally' without checking the remaining heads - fixed in 86c35b7ae300: $ cat >> r1/.hg/hgrc << EOF > [devel] > discovery.randomize = False > EOF $ hg -R r1 outgoing r2 -T'{rev} ' --config extensions.blackbox= \ > --config blackbox.track='command commandfinish discovery' comparing with r2 searching for changes 101 102 103 104 105 106 107 108 109 110 (no-eol) $ hg -R r1 --config extensions.blackbox= blackbox --config blackbox.track= * @5d0b986a083e0d91f116de4691e2aaa54d5bbec0 (*)> serve --no-profile --cmdserver chgunix * (glob) (chg !) * @5d0b986a083e0d91f116de4691e2aaa54d5bbec0 (*)> -R r1 outgoing r2 *-T{rev} * --config *extensions.blackbox=* (glob) * @5d0b986a083e0d91f116de4691e2aaa54d5bbec0 (*)> found 101 common and 1 unknown server heads, 1 roundtrips in *.????s (glob) * @5d0b986a083e0d91f116de4691e2aaa54d5bbec0 (*)> -R r1 outgoing r2 *-T{rev} * --config *extensions.blackbox=* exited 0 after *.?? seconds (glob) $ cd .. Even if the set of revs to discover is restricted, unrelated revs may be returned as common heads. $ mkdir ancestorsof $ cd ancestorsof $ hg init a $ hg clone a b -q $ cd b $ hg debugbuilddag '.:root *root *root' $ hg log -G -T '{node|short}' o fa942426a6fd | | o 66f7d451a68b |/ o 1ea73414a91b $ hg push -r 66f7d451a68b -q $ hg debugdiscovery --verbose --rev fa942426a6fd comparing with $TESTTMP/ancestorsof/a searching for changes elapsed time: * seconds (glob) round-trips: 1 queries: 1 heads summary: total common heads: 1 also local heads: 1 also remote heads: 1 both: 1 local heads: 2 common: 1 missing: 1 remote heads: 1 common: 1 unknown: 0 local changesets: 3 common: 2 heads: 1 roots: 1 missing: 1 heads: 1 roots: 1 first undecided set: 1 heads: 1 roots: 1 common: 0 missing: 1 common heads: 66f7d451a68b $ cd .. Test debuging discovery using different subset of the same repository ===================================================================== remote is a local subset ------------------------ remote will be last 25 heads of the local graph $ cd $TESTTMP/manyheads $ hg -R a debugdiscovery \ > --debug \ > --remote-as-revs 'last(heads(all()), 25)' \ > --config devel.discovery.randomize=false query 1; heads searching for changes all remote heads known locally elapsed time: * seconds (glob) round-trips: 1 queries: 260 heads summary: total common heads: 25 also local heads: 25 also remote heads: 25 both: 25 local heads: 260 common: 25 missing: 235 remote heads: 25 common: 25 unknown: 0 local changesets: 1340 common: 400 heads: 25 roots: 1 missing: 940 heads: 235 roots: 235 first undecided set: 940 heads: 235 roots: 235 common: 0 missing: 940 common heads: 0dfd965d91c6 0fe09b60448d 14a17233ce9d 175c0a3072cf 1c51e2c80832 1e51600e0698 24eb5f9bdbab 25ce09526613 36bd00abde57 426989fdefa0 596d87362679 5dd1039ea5c0 5ef24f022278 5f230dc19419 80b39998accb 88f40688ffb5 9e37ddf8c632 abf4d55b075e b2ce801fddfe b368b6ac3ce3 c959bf2e869c c9fba6ba4e2e d783207cf649 d9a51e256f21 e3717a4e3753 local is a local subset ------------------------ remote will be last 25 heads of the local graph $ cd $TESTTMP/manyheads $ hg -R a debugdiscovery b \ > --debug \ > --local-as-revs 'first(heads(all()), 25)' \ > --config devel.discovery.randomize=false comparing with b query 1; heads searching for changes taking quick initial sample query 2; still undecided: 375, sample size is: 81 sampling from both directions query 3; still undecided: 3, sample size is: 3 3 total queries *s (glob) elapsed time: * seconds (glob) round-trips: 3 queries: 109 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 25 common: 0 missing: 25 remote heads: 1 common: 0 unknown: 1 local changesets: 400 common: 300 heads: 1 roots: 1 missing: 100 heads: 25 roots: 25 first undecided set: 400 heads: 25 roots: 1 common: 300 missing: 100 common heads: 3ee37d65064a both local and remove are subset ------------------------ remote will be last 25 heads of the local graph $ cd $TESTTMP/manyheads $ hg -R a debugdiscovery \ > --debug \ > --local-as-revs 'first(heads(all()), 25)' \ > --remote-as-revs 'last(heads(all()), 25)' \ > --config devel.discovery.randomize=false query 1; heads searching for changes taking quick initial sample query 2; still undecided: 375, sample size is: 81 sampling from both directions query 3; still undecided: 3, sample size is: 3 3 total queries in *s (glob) elapsed time: * seconds (glob) round-trips: 3 queries: 109 heads summary: total common heads: 1 also local heads: 0 also remote heads: 0 both: 0 local heads: 25 common: 0 missing: 25 remote heads: 25 common: 0 unknown: 25 local changesets: 400 common: 300 heads: 1 roots: 1 missing: 100 heads: 25 roots: 25 first undecided set: 400 heads: 25 roots: 1 common: 300 missing: 100 common heads: 3ee37d65064a Test -T json output ------------------- $ hg -R a debugdiscovery \ > -T json \ > --debug \ > --local-as-revs 'first(heads(all()), 25)' \ > --remote-as-revs 'last(heads(all()), 25)' \ > --config devel.discovery.randomize=false [ { "elapsed": *, (glob) "nb-common-heads": 1, "nb-common-heads-both": 0, "nb-common-heads-local": 0, "nb-common-heads-remote": 0, "nb-common-roots": 1, "nb-head-local": 25, "nb-head-local-missing": 25, "nb-head-remote": 25, "nb-head-remote-unknown": 25, "nb-ini_und": 400, "nb-ini_und-common": 300, "nb-ini_und-heads": 25, "nb-ini_und-missing": 100, "nb-ini_und-roots": 1, "nb-missing-heads": 25, "nb-missing-roots": 25, "nb-revs": 400, "nb-revs-common": 300, "nb-revs-missing": 100, "output": "query 1; heads\nsearching for changes\ntaking quick initial sample\nquery 2; still undecided: 375, sample size is: 81\nsampling from both directions\nquery 3; still undecided: 3, sample size is: 3\n3 total queries in *s\n", (glob) "total-queries": 109, "total-roundtrips": 3 } ]