Boris Feld <boris.feld@octobus.net> [Fri, 23 Nov 2018 06:07:33 +0100] rev 40819
mmapindex: move the 'mmapindexthreshold' option out of experimental
The option is useful and should be advertised more. We move it out of
experimental as a first step. The `storage` section is selected as this is
related to how the storage is accessed. A new 'performance' section might be
more appropriate.
We move from 'mmapindexthreshold` to `mmap-threshold` as non-index item are
also suitable for mmap (eg: the rev-branch-cache).
If relevant, we can introduce sub-option `mmap-threshold.revlog-index` later.
Boris Feld <boris.feld@octobus.net> [Sat, 01 Dec 2018 15:57:27 +0100] rev 40818
perf: add a --rev attribute to perfindex
This allow for benchmarking the time necessary to look for other version than
the tip.
Boris Feld <boris.feld@octobus.net> [Fri, 23 Nov 2018 06:03:38 +0100] rev 40817
perf: update perfindex to be more realistic
The previous code was creating a revlog manually, we now use the actual
`localrepo` method to create it.
We have to jump though extra hops to work around the impact of filecache.
Martin von Zweigbergk <martinvonz@google.com> [Sun, 02 Dec 2018 13:09:46 -0800] rev 40816
match: drop unnecessary wrapping of regex in group
It seems the regexes have been wrapped in an unnamed group since
b6c42714d900 (Add locate command., 2005-07-05). In that commit, the
grouping was needed because there was a "head" ('^') added before the
group and a "tail" (os.sep) added after it. It seems the head was
moved inside the group in 1c0c413cccdd (Get add and locate to use new
repo and dirstate walk code., 2005-07-18) and the tail was moved
inside the group in 89985a1b3427 (Clean up walk and changes code to
use normalised names properly., 2005-07-31), So it seems to me that
we've carried around the unnecessary group for 13 years. This patch
removes it.
Differential Revision: https://phab.mercurial-scm.org/D5352
Martin von Zweigbergk <martinvonz@google.com> [Sun, 02 Dec 2018 13:45:20 -0800] rev 40815
match: use _BASE_SIZE instead of magic value 4
Differential Revision: https://phab.mercurial-scm.org/D5351
Martin von Zweigbergk <martinvonz@google.com> [Sun, 02 Dec 2018 13:44:49 -0800] rev 40814
match: make "groupsize" include the trailing "|"
I think this is a little easier to follow and it will simplify later
patches too.
Differential Revision: https://phab.mercurial-scm.org/D5350
Martin von Zweigbergk <martinvonz@google.com> [Sun, 02 Dec 2018 13:09:43 -0800] rev 40813
match: fix an unaligned (but harmless) indent
Differential Revision: https://phab.mercurial-scm.org/D5349
Boris Feld <boris.feld@octobus.net> [Thu, 22 Nov 2018 17:41:10 +0100] rev 40812
match: raise an Abort error instead of OverflowError
This case of OverflowError (one single pattern being too large) has never been
properly caught in the past.
Boris Feld <boris.feld@octobus.net> [Thu, 22 Nov 2018 21:02:02 +0100] rev 40811
match: avoid translating glob to matcher multiple times for large sets
For hgignore with many globs, the resulting regexp might not fit under the 20K
length limit. So the patterns need to be broken up in smaller pieces.
Before this change, the logic was re-starting the full process from scratch
for each smaller pieces, including the translation of globs into regexp.
Effectively doing the work over and over.
If the 20K limit is reached, we are likely in a case where there is many such
glob, so exporting them is especially expensive and we should be careful not
to do that work more than once.
To work around this, we now translate glob to regexp once and for all. Then,
we assemble the resulting individual regexp into valid blocks.
This raises a very significant performance win for large `.hgignore file`:
Before: ! wall 0.153153 comb 0.150000 user 0.150000 sys 0.000000 (median of 66)
After: ! wall 0.059793 comb 0.060000 user 0.060000 sys 0.000000 (median of 100)
Boris Feld <boris.feld@octobus.net> [Thu, 22 Nov 2018 17:25:49 +0100] rev 40810
match: extract function that group regexps