Mercurial > hg
view tests/test-remove.t @ 30212:260af19891f2
changegroup: increase write buffer size to 128k
By default, Python defers to the operating system for choosing the
default buffer size on opened files. On my Linux machine, the default
is 4k, which is really small for 2016.
This patch bumps the write buffer size when writing
changegroups/bundles to 128k. This matches the 128k read buffer
we already use on revlogs.
It's worth noting that this only impacts when writing to an explicit
file (such as during `hg bundle`). Buffers when writing to bundle
files via the repo vfs or to a temporary file are not impacted.
When producing a none-v2 bundle file of the mozilla-unified repository,
this change caused the number of write() system calls to drop from
952,449 to 29,788. After this change, the most frequent system
calls are fstat(), read(), lseek(), and open(). There were
2,523,672 system calls after this patch (so a net decrease of
~950k is statistically significant).
This change shows no performance change on my system. But I have a
high-end system with a fast SSD. It is quite possible this change
will have a significant impact on network file systems, where
extra network round trips due to excessive I/O system calls could
introduce significant latency.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sun, 16 Oct 2016 13:35:23 -0700 |
parents | e824de573112 |
children | 7a58608281dd |
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$ remove() { > hg rm $@ > echo "exit code: $?" > hg st > # do not use ls -R, which recurses in .hg subdirs on Mac OS X 10.5 > find . -name .hg -prune -o -type f -print | sort > hg up -C > } $ cat >> $HGRCPATH <<EOF > [progress] > disable=False > assume-tty = 1 > delay = 0 > # set changedelay really large so we don't see nested topics > changedelay = 30000 > format = topic bar number > refresh = 0 > width = 60 > EOF $ hg init a $ cd a $ echo a > foo file not managed $ remove foo \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) not removing foo: file is untracked exit code: 1 ? foo ./foo 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg add foo $ hg commit -m1 the table cases 00 state added, options none $ echo b > bar $ hg add bar $ remove bar \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) \r (no-eol) (esc) skipping [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) not removing bar: file has been marked for add (use 'hg forget' to undo add) exit code: 1 A bar ./bar ./foo \r (no-eol) (esc) updating [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) 0 files updated, 0 files merged, 0 files removed, 0 files unresolved 01 state clean, options none $ remove foo \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) exit code: 0 R foo ? bar ./bar \r (no-eol) (esc) updating [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 02 state modified, options none $ echo b >> foo $ remove foo \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) \r (no-eol) (esc) skipping [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) not removing foo: file is modified (use -f to force removal) exit code: 1 M foo ? bar ./bar ./foo \r (no-eol) (esc) updating [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 03 state missing, options none $ rm foo $ remove foo \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) exit code: 0 R foo ? bar ./bar \r (no-eol) (esc) updating [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 10 state added, options -f $ echo b > bar $ hg add bar $ remove -f bar \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) exit code: 0 ? bar ./bar ./foo 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ rm bar 11 state clean, options -f $ remove -f foo \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) exit code: 0 R foo \r (no-eol) (esc) updating [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 12 state modified, options -f $ echo b >> foo $ remove -f foo \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) exit code: 0 R foo \r (no-eol) (esc) updating [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 13 state missing, options -f $ rm foo $ remove -f foo \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) exit code: 0 R foo \r (no-eol) (esc) updating [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 20 state added, options -A $ echo b > bar $ hg add bar $ remove -A bar \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) \r (no-eol) (esc) skipping [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) not removing bar: file still exists exit code: 1 A bar ./bar ./foo \r (no-eol) (esc) updating [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) 0 files updated, 0 files merged, 0 files removed, 0 files unresolved 21 state clean, options -A $ remove -A foo \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) \r (no-eol) (esc) skipping [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) not removing foo: file still exists exit code: 1 ? bar ./bar ./foo 0 files updated, 0 files merged, 0 files removed, 0 files unresolved 22 state modified, options -A $ echo b >> foo $ remove -A foo \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) \r (no-eol) (esc) skipping [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) not removing foo: file still exists exit code: 1 M foo ? bar ./bar ./foo \r (no-eol) (esc) updating [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 23 state missing, options -A $ rm foo $ remove -A foo \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) exit code: 0 R foo ? bar ./bar \r (no-eol) (esc) updating [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 30 state added, options -Af $ echo b > bar $ hg add bar $ remove -Af bar \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) exit code: 0 ? bar ./bar ./foo 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ rm bar 31 state clean, options -Af $ remove -Af foo \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) exit code: 0 R foo ./foo \r (no-eol) (esc) updating [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 32 state modified, options -Af $ echo b >> foo $ remove -Af foo \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) exit code: 0 R foo ./foo \r (no-eol) (esc) updating [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 33 state missing, options -Af $ rm foo $ remove -Af foo \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) exit code: 0 R foo \r (no-eol) (esc) updating [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) 1 files updated, 0 files merged, 0 files removed, 0 files unresolved test some directory stuff $ mkdir test $ echo a > test/foo $ echo b > test/bar $ hg ci -Am2 adding test/bar adding test/foo dir, options none $ rm test/bar $ remove test \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) \r (no-eol) (esc) deleting [=====================> ] 1/2\r (no-eol) (esc) \r (no-eol) (esc) \r (no-eol) (esc) deleting [===========================================>] 2/2\r (no-eol) (esc) \r (no-eol) (esc) removing test/bar (glob) removing test/foo (glob) exit code: 0 R test/bar R test/foo ./foo \r (no-eol) (esc) updating [===========================================>] 2/2\r (no-eol) (esc) \r (no-eol) (esc) 2 files updated, 0 files merged, 0 files removed, 0 files unresolved dir, options -f $ rm test/bar $ remove -f test \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) \r (no-eol) (esc) deleting [=====================> ] 1/2\r (no-eol) (esc) \r (no-eol) (esc) \r (no-eol) (esc) deleting [===========================================>] 2/2\r (no-eol) (esc) \r (no-eol) (esc) removing test/bar (glob) removing test/foo (glob) exit code: 0 R test/bar R test/foo ./foo \r (no-eol) (esc) updating [===========================================>] 2/2\r (no-eol) (esc) \r (no-eol) (esc) 2 files updated, 0 files merged, 0 files removed, 0 files unresolved dir, options -A $ rm test/bar $ remove -A test \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) \r (no-eol) (esc) skipping [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) removing test/bar (glob) not removing test/foo: file still exists (glob) exit code: 1 R test/bar ./foo ./test/foo \r (no-eol) (esc) updating [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) 1 files updated, 0 files merged, 0 files removed, 0 files unresolved dir, options -Af $ rm test/bar $ remove -Af test \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) \r (no-eol) (esc) deleting [=====================> ] 1/2\r (no-eol) (esc) \r (no-eol) (esc) \r (no-eol) (esc) deleting [===========================================>] 2/2\r (no-eol) (esc) \r (no-eol) (esc) removing test/bar (glob) removing test/foo (glob) exit code: 0 R test/bar R test/foo ./foo ./test/foo \r (no-eol) (esc) updating [===========================================>] 2/2\r (no-eol) (esc) \r (no-eol) (esc) 2 files updated, 0 files merged, 0 files removed, 0 files unresolved test remove dropping empty trees (issue1861) $ mkdir -p issue1861/b/c $ echo x > issue1861/x $ echo y > issue1861/b/c/y $ hg ci -Am add adding issue1861/b/c/y adding issue1861/x $ hg rm issue1861/b \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) removing issue1861/b/c/y (glob) $ hg ci -m remove $ ls issue1861 x test that commit does not crash if the user removes a newly added file $ touch f1 $ hg add f1 $ rm f1 $ hg ci -A -mx removing f1 nothing changed [1] handling of untracked directories and missing files $ mkdir d1 $ echo a > d1/a $ hg rm --after d1 \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) not removing d1: no tracked files [1] $ hg add d1/a $ rm d1/a $ hg rm --after d1 \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) removing d1/a (glob) $ hg rm --after nosuch nosuch: * (glob) \r (no-eol) (esc) deleting [===========================================>] 1/1\r (no-eol) (esc) \r (no-eol) (esc) [1]