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Allow disabling bzip2 compression for index files

Browse Source 
Using bzip2 generates smaller index files (roughly 20% smaller Packages
files) but it comes with a big performance penalty.  When publishing a
debian mirror snapshot (amd64, arm64, armhf, source) without contents
skipping bzip speeds things up around 1.8 times.

```
$ hyperfine -w 1 -L skip-bz2 true,false  -m 3 -p "aptly -config aptly.conf publish drop bullseye || true" "aptly -config aptly.conf  publish snapshot  --skip-bz2={skip-bz2} --skip-contents --skip-signing bullseye"
Benchmark 1: aptly -config aptly.conf  publish snapshot  --skip-bz2=true --skip-contents --skip-signing bullseye
  Time (mean ± σ):     35.567 s ±  0.307 s    [User: 39.366 s, System: 10.075 s]
  Range (min … max):   35.311 s … 35.907 s    3 runs

Benchmark 2: aptly -config aptly.conf  publish snapshot  --skip-bz2=false --skip-contents --skip-signing bullseye
  Time (mean ± σ):     64.740 s ±  0.135 s    [User: 68.565 s, System: 10.129 s]
  Range (min … max):   64.596 s … 64.862 s    3 runs

Summary
  'aptly -config aptly.conf  publish snapshot  --skip-bz2=true --skip-contents --skip-signing bullseye' ran
    1.82 ± 0.02 times faster than 'aptly -config aptly.conf  publish snapshot  --skip-bz2=false --skip-contents --skip-signing bullseye'
```

Allow skipping bz2 creation for setups where faster publishing is more
important then Package file size.

Signed-off-by: Sjoerd Simons <sjoerd@collabora.com>
This commit is contained in:
Sjoerd Simons
2022-06-18 08:29:21 +02:00
committed by Benj Fassbind
parent 2aca913e92
commit f61514edaf
21 changed files with 204 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
system/t06_publish/switch.py
+29
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@@ -545,3 +545,32 @@ class PublishSwitch14Test(BaseTest):
'main/binary-amd64/Release', 'main/binary-i386/Release', 'main/Contents-amd64.gz',
'main/Contents-i386.gz', 'Contents-i386.gz', 'Contents-amd64.gz']):
raise Exception("path seen wrong: %r" % (pathsSeen, ))
class PublishSwitch15Test(BaseTest):
"""
publish switch: -skip-bz2
"""
fixtureDB = True
fixturePool = True
fixtureCmds = [
"aptly snapshot create snap1 from mirror gnuplot-maverick",
"aptly snapshot create snap2 empty",
"aptly snapshot pull -no-deps -architectures=i386,amd64 snap2 snap1 snap3 gnuplot-x11",
"aptly publish snapshot -keyring=${files}/aptly.pub -secret-keyring=${files}/aptly.sec -distribution=maverick -skip-bz2 snap1",
]
runCmd = "aptly publish switch -keyring=${files}/aptly.pub -secret-keyring=${files}/aptly.sec maverick snap3"
gold_processor = BaseTest.expand_environ
def check(self):
super(PublishSwitch15Test, self).check()
self.check_exists('public/dists/maverick/Release')
self.check_exists('public/dists/maverick/main/binary-i386/Packages')
self.check_exists('public/dists/maverick/main/binary-i386/Packages.gz')
self.check_not_exists('public/dists/maverick/main/binary-i386/Packages.bz2')
self.check_exists('public/dists/maverick/main/binary-amd64/Packages')
self.check_exists('public/dists/maverick/main/binary-amd64/Packages.gz')
self.check_not_exists('public/dists/maverick/main/binary-amd64/Packages.bz2')