setdiscovery: stop limiting the number of local head we initially send
In our testing this limitation provides now real gain and instead triggers
pathological discovery timing for some repository with many heads.
See inline documentation for details.
Some timing below:
Mozilla try repository, (~1M revs, ~35K heads), discovery between 2 clones with
100 head missing on each side
before:
! wall 1.492111 comb 1.490000 user 1.450000 sys 0.040000 (best of 20)
! wall 1.813992 comb 1.820000 user 1.700000 sys 0.120000 (max of 20)
! wall 1.574326 comb 1.573500 user 1.522000 sys 0.051500 (avg of 20)
! wall 1.572583 comb 1.570000 user 1.520000 sys 0.050000 (median of 20)
after:
! wall 1.147834 comb 1.150000 user 1.090000 sys 0.060000 (best of 20)
! wall 1.449144 comb 1.450000 user 1.330000 sys 0.120000 (max of 20)
! wall 1.204618 comb 1.202500 user 1.146500 sys 0.056000 (avg of 20)
! wall 1.194407 comb 1.190000 user 1.140000 sys 0.050000 (median of 20)
pypy (~100 heads, 317 heads) discovery between clones with only 42 common heads
before:
! wall 0.031653 comb 0.030000 user 0.030000 sys 0.000000 (best of 25)
! wall 0.055719 comb 0.050000 user 0.040000 sys 0.010000 (max of 25)
! wall 0.038939 comb 0.039600 user 0.038400 sys 0.001200 (avg of 25)
! wall 0.038660 comb 0.050000 user 0.040000 sys 0.010000 (median of 25)
after:
! wall 0.018754 comb 0.020000 user 0.020000 sys 0.000000 (best of 49)
! wall 0.034505 comb 0.040000 user 0.030000 sys 0.010000 (max of 49)
! wall 0.019631 comb 0.019796 user 0.018367 sys 0.001429 (avg of 49)
! wall 0.019132 comb 0.020000 user 0.020000 sys 0.000000 (median of 49)
Private repository (~1M revs, ~3K heads), discovery from a strip subset, about
100 changesets to be pulled.
before:
! wall 1.837729 comb 1.840000 user 1.790000 sys 0.050000 (best of 20)
! wall 2.203468 comb 2.200000 user 2.100000 sys 0.100000 (max of 20)
! wall 2.049355 comb 2.048500 user 2.002500 sys 0.046000 (avg of 20)
! wall 2.035315 comb 2.040000 user 2.000000 sys 0.040000 (median of 20)
after:
! wall 0.136598 comb 0.130000 user 0.110000 sys 0.020000 (best of 20)
! wall 0.330519 comb 0.330000 user 0.260000 sys 0.070000 (max of 20)
! wall 0.157254 comb 0.155500 user 0.123000 sys 0.032500 (avg of 20)
! wall 0.149870 comb 0.140000 user 0.110000 sys 0.030000 (median of 20)
Same private repo, discovery between two clone with 500 different heads on each
side:
before:
! wall 2.372919 comb 2.370000 user 2.320000 sys 0.050000 (best of 20)
! wall 2.622422 comb 2.610000 user 2.510000 sys 0.100000 (max of 20)
! wall 2.450135 comb 2.450000 user 2.402000 sys 0.048000 (avg of 20)
! wall 2.443896 comb 2.450000 user 2.410000 sys 0.040000 (median of 20)
after:
! wall 0.625497 comb 0.620000 user 0.570000 sys 0.050000 (best of 20)
! wall 0.834723 comb 0.820000 user 0.730000 sys 0.090000 (max of 20)
! wall 0.675725 comb 0.675500 user 0.628000 sys 0.047500 (avg of 20)
! wall 0.671614 comb 0.680000 user 0.640000 sys 0.040000 (median of 20)
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)
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
missing: 0
common heads: 01241442b3c2 b5714e113bc0
% -- a -> b set
comparing with b
query 1; heads
searching for changes
all local heads known remotely
elapsed time: * seconds (glob)
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
missing: 0
common heads: 01241442b3c2 b5714e113bc0
% -- a -> b set (tip only)
comparing with b
query 1; heads
searching for changes
all local heads known remotely
elapsed time: * seconds (glob)
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
missing: 1
common heads: b5714e113bc0
% -- b -> a tree
comparing with a
searching for changes
unpruned common: 01241442b3c2 b5714e113bc0
elapsed time: * seconds (glob)
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
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)
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
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)
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
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)
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
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)
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
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)
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
missing: 33
common heads: 66f7d451a68b
% -- b -> a tree
comparing with a
searching for changes
unpruned common: 66f7d451a68b bebd167eb94d
elapsed time: * seconds (glob)
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
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)
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
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)
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
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)
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
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)
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
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)
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
missing: 32
common heads: 66f7d451a68b
% -- b -> a tree
comparing with a
searching for changes
unpruned common: 2dc09a01254d 66f7d451a68b
elapsed time: * seconds (glob)
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
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)
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
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)
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
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)
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
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)
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
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)
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
missing: 30
common heads: 66f7d451a68b
% -- b -> a tree
comparing with a
searching for changes
unpruned common: 66f7d451a68b
elapsed time: * seconds (glob)
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
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)
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
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)
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
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)
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
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)
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
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)
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
missing: 50
common heads: 66f7d451a68b
% -- b -> a tree
comparing with a
searching for changes
unpruned common: 66f7d451a68b
elapsed time: * seconds (glob)
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
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)
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
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)
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
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)
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
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)
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
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)
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
missing: 50
common heads: 7ead0cba2838
% -- b -> a tree
comparing with a
searching for changes
unpruned common: 7ead0cba2838
elapsed time: * seconds (glob)
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
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)
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
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)
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
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
comparing with b
query 1; heads
searching for changes
taking quick initial sample
searching: 2 queries
query 2; still undecided: 1080, sample size is: 100
sampling from both directions
searching: 3 queries
query 3; still undecided: 980, sample size is: 200
sampling from both directions
searching: 4 queries
query 4; still undecided: \d+, sample size is: 200 (re)
sampling from both directions
searching: 5 queries
query 5; still undecided: 195, sample size is: 195
5 total queries in *.????s (glob)
elapsed time: * seconds (glob)
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
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)
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
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 >> $TESTTMP/unrandomsample.py << EOF
> import random
> def sample(population, k):
> return sorted(population)[:k]
> random.sample = sample
> EOF
$ cat >> r1/.hg/hgrc << EOF
> [extensions]
> unrandomsample = $TESTTMP/unrandomsample.py
> 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 --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 ..