Mercurial > hg
view tests/test-mq-header-date.t @ 16120:47ee41fcf42b
largefiles: optimize update speed by only updating changed largefiles
Historically, during 'hg update', every largefile in the working copy was
hashed (which is a very expensive operation on big files) and any
largefiles that did not have a hash that matched their standin were
updated.
This patch optimizes 'hg update' by keeping track of what standins have
changed between the old and new revisions, and only updating the largefiles
that have changed. This saves a lot of time by avoiding the unecessary
calculation of a list of sha1 hashes for big files.
With this patch, the time 'hg update' takes to complete is a function of
how many largefiles need to be updated and what their size is.
Performance tests on a repository with about 80 largefiles ranging from
a few MB to about 97 MB are shown below. The tests show how long it takes
to run 'hg update' with no changes actually being updated.
Mercurial 2.1 release:
$ time hg update
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
getting changed largefiles
0 largefiles updated, 0 removed
real 0m10.045s
user 0m9.367s
sys 0m0.674s
With this patch:
$ time hg update
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
real 0m0.965s
user 0m0.845s
sys 0m0.115s
The same repsoitory, without the largefiles extension enabled:
$ time hg update
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
real 0m0.799s
user 0m0.684s
sys 0m0.111s
So before the patch, 'hg update' with no changes was approximately 9.25s
slower with largefiles enabled. With this patch, it is approximately 0.165s
slower.
author | Na'Tosha Bard <natosha@unity3d.com> |
---|---|
date | Mon, 13 Feb 2012 18:37:07 +0100 |
parents | 4a86b30de425 |
children | 2da47de36b6f |
line wrap: on
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$ echo "[extensions]" >> $HGRCPATH $ echo "mq=" >> $HGRCPATH $ echo "[diff]" >> $HGRCPATH $ echo "nodates=true" >> $HGRCPATH $ catpatch() { > cat .hg/patches/$1.patch | sed -e "s/^diff \-r [0-9a-f]* /diff -r ... /" \ > -e "s/^\(# Parent \).*/\1/" > } $ catlog() { > catpatch $1 > hg log --template "{rev}: {desc} - {author}\n" > } $ catlogd() { > catpatch $1 > hg log --template "{rev}: {desc} - {author} - {date}\n" > } $ drop() { > hg qpop > hg qdel $1.patch > } $ runtest() { > echo ==== init > hg init a > cd a > hg qinit > > > echo ==== qnew -d > hg qnew -d '3 0' 1.patch > catlogd 1 > > echo ==== qref > echo "1" >1 > hg add > hg qref > catlogd 1 > > echo ==== qref -d > hg qref -d '4 0' > catlogd 1 > > > echo ==== qnew > hg qnew 2.patch > echo "2" >2 > hg add > hg qref > catlog 2 > > echo ==== qref -d > hg qref -d '5 0' > catlog 2 > > drop 2 > > > echo ==== qnew -d -m > hg qnew -d '6 0' -m "Three" 3.patch > catlogd 3 > > echo ==== qref > echo "3" >3 > hg add > hg qref > catlogd 3 > > echo ==== qref -m > hg qref -m "Drei" > catlogd 3 > > echo ==== qref -d > hg qref -d '7 0' > catlogd 3 > > echo ==== qref -d -m > hg qref -d '8 0' -m "Three (again)" > catlogd 3 > > > echo ==== qnew -m > hg qnew -m "Four" 4.patch > echo "4" >4 > hg add > hg qref > catlog 4 > > echo ==== qref -d > hg qref -d '9 0' > catlog 4 > > drop 4 > > > echo ==== qnew with HG header > hg qnew --config 'mq.plain=true' 5.patch > hg qpop > echo "# HG changeset patch" >>.hg/patches/5.patch > echo "# Date 10 0" >>.hg/patches/5.patch > hg qpush 2>&1 | grep 'Now at' > catlogd 5 > > echo ==== hg qref > echo "5" >5 > hg add > hg qref > catlogd 5 > > echo ==== hg qref -d > hg qref -d '11 0' > catlogd 5 > > > echo ==== qnew with plain header > hg qnew --config 'mq.plain=true' -d '12 0' 6.patch > hg qpop > hg qpush 2>&1 | grep 'now at' > catlog 6 > > echo ==== hg qref > echo "6" >6 > hg add > hg qref > catlogd 6 > > echo ==== hg qref -d > hg qref -d '13 0' > catlogd 6 > > drop 6 > > > echo ==== qnew -u > hg qnew -u jane 6.patch > echo "6" >6 > hg add > hg qref > catlog 6 > > echo ==== qref -d > hg qref -d '12 0' > catlog 6 > > drop 6 > > > echo ==== qnew -d > hg qnew -d '13 0' 7.patch > echo "7" >7 > hg add > hg qref > catlog 7 > > echo ==== qref -u > hg qref -u john > catlogd 7 > > > echo ==== qnew > hg qnew 8.patch > echo "8" >8 > hg add > hg qref > catlog 8 > > echo ==== qref -u -d > hg qref -u john -d '14 0' > catlog 8 > > drop 8 > > > echo ==== qnew -m > hg qnew -m "Nine" 9.patch > echo "9" >9 > hg add > hg qref > catlog 9 > > echo ==== qref -u -d > hg qref -u john -d '15 0' > catlog 9 > > drop 9 > > > echo ==== "qpop -a / qpush -a" > hg qpop -a > hg qpush -a > hg log --template "{rev}: {desc} - {author} - {date}\n" > } ======= plain headers $ echo "[mq]" >> $HGRCPATH $ echo "plain=true" >> $HGRCPATH $ mkdir sandbox $ (cd sandbox ; runtest) ==== init ==== qnew -d Date: 3 0 0: [mq]: 1.patch - test - 3.00 ==== qref adding 1 Date: 3 0 diff -r ... 1 --- /dev/null +++ b/1 @@ -0,0 +1,1 @@ +1 0: [mq]: 1.patch - test - 3.00 ==== qref -d Date: 4 0 diff -r ... 1 --- /dev/null +++ b/1 @@ -0,0 +1,1 @@ +1 0: [mq]: 1.patch - test - 4.00 ==== qnew adding 2 diff -r ... 2 --- /dev/null +++ b/2 @@ -0,0 +1,1 @@ +2 1: [mq]: 2.patch - test 0: [mq]: 1.patch - test ==== qref -d Date: 5 0 diff -r ... 2 --- /dev/null +++ b/2 @@ -0,0 +1,1 @@ +2 1: [mq]: 2.patch - test 0: [mq]: 1.patch - test popping 2.patch now at: 1.patch ==== qnew -d -m Date: 6 0 Three 1: Three - test - 6.00 0: [mq]: 1.patch - test - 4.00 ==== qref adding 3 Date: 6 0 Three diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 1: Three - test - 6.00 0: [mq]: 1.patch - test - 4.00 ==== qref -m Date: 6 0 Drei diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 1: Drei - test - 6.00 0: [mq]: 1.patch - test - 4.00 ==== qref -d Date: 7 0 Drei diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 1: Drei - test - 7.00 0: [mq]: 1.patch - test - 4.00 ==== qref -d -m Date: 8 0 Three (again) diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 1: Three (again) - test - 8.00 0: [mq]: 1.patch - test - 4.00 ==== qnew -m adding 4 Four diff -r ... 4 --- /dev/null +++ b/4 @@ -0,0 +1,1 @@ +4 2: Four - test 1: Three (again) - test 0: [mq]: 1.patch - test ==== qref -d Date: 9 0 Four diff -r ... 4 --- /dev/null +++ b/4 @@ -0,0 +1,1 @@ +4 2: Four - test 1: Three (again) - test 0: [mq]: 1.patch - test popping 4.patch now at: 3.patch ==== qnew with HG header popping 5.patch now at: 3.patch # HG changeset patch # Date 10 0 2: imported patch 5.patch - test - 10.00 1: Three (again) - test - 8.00 0: [mq]: 1.patch - test - 4.00 ==== hg qref adding 5 # HG changeset patch # Parent # Date 10 0 diff -r ... 5 --- /dev/null +++ b/5 @@ -0,0 +1,1 @@ +5 2: [mq]: 5.patch - test - 10.00 1: Three (again) - test - 8.00 0: [mq]: 1.patch - test - 4.00 ==== hg qref -d # HG changeset patch # Parent # Date 11 0 diff -r ... 5 --- /dev/null +++ b/5 @@ -0,0 +1,1 @@ +5 2: [mq]: 5.patch - test - 11.00 1: Three (again) - test - 8.00 0: [mq]: 1.patch - test - 4.00 ==== qnew with plain header popping 6.patch now at: 5.patch now at: 6.patch Date: 12 0 3: imported patch 6.patch - test 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test ==== hg qref adding 6 Date: 12 0 diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 3: [mq]: 6.patch - test - 12.00 2: [mq]: 5.patch - test - 11.00 1: Three (again) - test - 8.00 0: [mq]: 1.patch - test - 4.00 ==== hg qref -d Date: 13 0 diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 3: [mq]: 6.patch - test - 13.00 2: [mq]: 5.patch - test - 11.00 1: Three (again) - test - 8.00 0: [mq]: 1.patch - test - 4.00 popping 6.patch now at: 5.patch ==== qnew -u adding 6 From: jane diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 3: [mq]: 6.patch - jane 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test ==== qref -d Date: 12 0 From: jane diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 3: [mq]: 6.patch - jane 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test popping 6.patch now at: 5.patch ==== qnew -d adding 7 Date: 13 0 diff -r ... 7 --- /dev/null +++ b/7 @@ -0,0 +1,1 @@ +7 3: [mq]: 7.patch - test 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test ==== qref -u From: john Date: 13 0 diff -r ... 7 --- /dev/null +++ b/7 @@ -0,0 +1,1 @@ +7 3: [mq]: 7.patch - john - 13.00 2: [mq]: 5.patch - test - 11.00 1: Three (again) - test - 8.00 0: [mq]: 1.patch - test - 4.00 ==== qnew adding 8 diff -r ... 8 --- /dev/null +++ b/8 @@ -0,0 +1,1 @@ +8 4: [mq]: 8.patch - test 3: [mq]: 7.patch - john 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test ==== qref -u -d Date: 14 0 From: john diff -r ... 8 --- /dev/null +++ b/8 @@ -0,0 +1,1 @@ +8 4: [mq]: 8.patch - john 3: [mq]: 7.patch - john 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test popping 8.patch now at: 7.patch ==== qnew -m adding 9 Nine diff -r ... 9 --- /dev/null +++ b/9 @@ -0,0 +1,1 @@ +9 4: Nine - test 3: [mq]: 7.patch - john 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test ==== qref -u -d Date: 15 0 From: john Nine diff -r ... 9 --- /dev/null +++ b/9 @@ -0,0 +1,1 @@ +9 4: Nine - john 3: [mq]: 7.patch - john 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test popping 9.patch now at: 7.patch ==== qpop -a / qpush -a popping 7.patch popping 5.patch popping 3.patch popping 1.patch patch queue now empty applying 1.patch applying 3.patch applying 5.patch applying 7.patch now at: 7.patch 3: imported patch 7.patch - john - 13.00 2: imported patch 5.patch - test - 11.00 1: Three (again) - test - 8.00 0: imported patch 1.patch - test - 4.00 $ rm -r sandbox ======= hg headers $ echo "plain=false" >> $HGRCPATH $ mkdir sandbox $ (cd sandbox ; runtest) ==== init ==== qnew -d # HG changeset patch # Parent # Date 3 0 0: [mq]: 1.patch - test - 3.00 ==== qref adding 1 # HG changeset patch # Parent # Date 3 0 diff -r ... 1 --- /dev/null +++ b/1 @@ -0,0 +1,1 @@ +1 0: [mq]: 1.patch - test - 3.00 ==== qref -d # HG changeset patch # Parent # Date 4 0 diff -r ... 1 --- /dev/null +++ b/1 @@ -0,0 +1,1 @@ +1 0: [mq]: 1.patch - test - 4.00 ==== qnew adding 2 # HG changeset patch # Parent diff -r ... 2 --- /dev/null +++ b/2 @@ -0,0 +1,1 @@ +2 1: [mq]: 2.patch - test 0: [mq]: 1.patch - test ==== qref -d # HG changeset patch # Date 5 0 # Parent diff -r ... 2 --- /dev/null +++ b/2 @@ -0,0 +1,1 @@ +2 1: [mq]: 2.patch - test 0: [mq]: 1.patch - test popping 2.patch now at: 1.patch ==== qnew -d -m # HG changeset patch # Parent # Date 6 0 Three 1: Three - test - 6.00 0: [mq]: 1.patch - test - 4.00 ==== qref adding 3 # HG changeset patch # Parent # Date 6 0 Three diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 1: Three - test - 6.00 0: [mq]: 1.patch - test - 4.00 ==== qref -m # HG changeset patch # Parent # Date 6 0 Drei diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 1: Drei - test - 6.00 0: [mq]: 1.patch - test - 4.00 ==== qref -d # HG changeset patch # Parent # Date 7 0 Drei diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 1: Drei - test - 7.00 0: [mq]: 1.patch - test - 4.00 ==== qref -d -m # HG changeset patch # Parent # Date 8 0 Three (again) diff -r ... 3 --- /dev/null +++ b/3 @@ -0,0 +1,1 @@ +3 1: Three (again) - test - 8.00 0: [mq]: 1.patch - test - 4.00 ==== qnew -m adding 4 # HG changeset patch # Parent Four diff -r ... 4 --- /dev/null +++ b/4 @@ -0,0 +1,1 @@ +4 2: Four - test 1: Three (again) - test 0: [mq]: 1.patch - test ==== qref -d # HG changeset patch # Date 9 0 # Parent Four diff -r ... 4 --- /dev/null +++ b/4 @@ -0,0 +1,1 @@ +4 2: Four - test 1: Three (again) - test 0: [mq]: 1.patch - test popping 4.patch now at: 3.patch ==== qnew with HG header popping 5.patch now at: 3.patch # HG changeset patch # Date 10 0 2: imported patch 5.patch - test - 10.00 1: Three (again) - test - 8.00 0: [mq]: 1.patch - test - 4.00 ==== hg qref adding 5 # HG changeset patch # Parent # Date 10 0 diff -r ... 5 --- /dev/null +++ b/5 @@ -0,0 +1,1 @@ +5 2: [mq]: 5.patch - test - 10.00 1: Three (again) - test - 8.00 0: [mq]: 1.patch - test - 4.00 ==== hg qref -d # HG changeset patch # Parent # Date 11 0 diff -r ... 5 --- /dev/null +++ b/5 @@ -0,0 +1,1 @@ +5 2: [mq]: 5.patch - test - 11.00 1: Three (again) - test - 8.00 0: [mq]: 1.patch - test - 4.00 ==== qnew with plain header popping 6.patch now at: 5.patch now at: 6.patch Date: 12 0 3: imported patch 6.patch - test 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test ==== hg qref adding 6 Date: 12 0 diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 3: [mq]: 6.patch - test - 12.00 2: [mq]: 5.patch - test - 11.00 1: Three (again) - test - 8.00 0: [mq]: 1.patch - test - 4.00 ==== hg qref -d Date: 13 0 diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 3: [mq]: 6.patch - test - 13.00 2: [mq]: 5.patch - test - 11.00 1: Three (again) - test - 8.00 0: [mq]: 1.patch - test - 4.00 popping 6.patch now at: 5.patch ==== qnew -u adding 6 # HG changeset patch # Parent # User jane diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 3: [mq]: 6.patch - jane 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test ==== qref -d # HG changeset patch # Date 12 0 # Parent # User jane diff -r ... 6 --- /dev/null +++ b/6 @@ -0,0 +1,1 @@ +6 3: [mq]: 6.patch - jane 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test popping 6.patch now at: 5.patch ==== qnew -d adding 7 # HG changeset patch # Parent # Date 13 0 diff -r ... 7 --- /dev/null +++ b/7 @@ -0,0 +1,1 @@ +7 3: [mq]: 7.patch - test 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test ==== qref -u # HG changeset patch # User john # Parent # Date 13 0 diff -r ... 7 --- /dev/null +++ b/7 @@ -0,0 +1,1 @@ +7 3: [mq]: 7.patch - john - 13.00 2: [mq]: 5.patch - test - 11.00 1: Three (again) - test - 8.00 0: [mq]: 1.patch - test - 4.00 ==== qnew adding 8 # HG changeset patch # Parent diff -r ... 8 --- /dev/null +++ b/8 @@ -0,0 +1,1 @@ +8 4: [mq]: 8.patch - test 3: [mq]: 7.patch - john 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test ==== qref -u -d # HG changeset patch # Date 14 0 # User john # Parent diff -r ... 8 --- /dev/null +++ b/8 @@ -0,0 +1,1 @@ +8 4: [mq]: 8.patch - john 3: [mq]: 7.patch - john 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test popping 8.patch now at: 7.patch ==== qnew -m adding 9 # HG changeset patch # Parent Nine diff -r ... 9 --- /dev/null +++ b/9 @@ -0,0 +1,1 @@ +9 4: Nine - test 3: [mq]: 7.patch - john 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test ==== qref -u -d # HG changeset patch # Date 15 0 # User john # Parent Nine diff -r ... 9 --- /dev/null +++ b/9 @@ -0,0 +1,1 @@ +9 4: Nine - john 3: [mq]: 7.patch - john 2: [mq]: 5.patch - test 1: Three (again) - test 0: [mq]: 1.patch - test popping 9.patch now at: 7.patch ==== qpop -a / qpush -a popping 7.patch popping 5.patch popping 3.patch popping 1.patch patch queue now empty applying 1.patch applying 3.patch applying 5.patch applying 7.patch now at: 7.patch 3: imported patch 7.patch - john - 13.00 2: imported patch 5.patch - test - 11.00 1: Three (again) - test - 8.00 0: imported patch 1.patch - test - 4.00 $ rm -r sandbox