Ping? It’s still really frustrating to have the entire system go unresponsive for a minute just because gnome-shell crashed and apport won’t let it restart until it’s finished compressing the core dump.
If you’re not willing to go all the way to zlib level 1, can we at least proceed with going down to 5 like you suggested? Alternatively, python3-brotli entered Ubuntu shortly after my original report. brotli level 2 compresses faster than zlib level 1 with smaller output than zlib level 9, while brotli level 1 is as almost as fast as lz4 with output size like zlib level 5! I don’t have the crash dump I used for the tests above, so here are some tests on a somewhat smaller one. zlib.compressobj(level=1) time=7.1 size=41822029 zlib.compressobj(level=2) time=7.1 size=40718379 zlib.compressobj(level=3) time=7.4 size=39638807 zlib.compressobj(level=4) time=13.1 size=31197301 zlib.compressobj(level=5) time=13.9 size=30423373 zlib.compressobj(level=6) time=15.1 size=29763741 zlib.compressobj(level=7) time=16.3 size=29526183 zlib.compressobj(level=8) time=25.6 size=29191955 zlib.compressobj(level=9) time=39.2 size=29067237 bz2.BZ2Compressor(compresslevel=1) time=25.0 size=25198553 bz2.BZ2Compressor(compresslevel=9) time=30.6 size=23280287 lz4.compress time=0.9 size=50649857 lz4.compressHC time=5.4 size=40462669 brotli.Compressor(quality=1) time=1.2 size=30559841 brotli.Compressor(quality=2) time=3.8 size=26162317 brotli.Compressor(quality=3) time=6.2 size=26256343 brotli.Compressor(quality=4) time=8.7 size=24982273 brotli.Compressor(quality=5) time=29.2 size=21744749 brotli.Compressor(quality=6) time=45.5 size=21502521 brotli.Compressor(quality=7) time=81.7 size=21355153 brotli.Compressor(quality=8) time=145.9 size=21249997 If a crash could be recorded in a second instead of a minute with almost no size difference, I’d call that a win. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1537635 Title: Reduce zlib compression level for massive performance increase To manage notifications about this bug go to: https://bugs.launchpad.net/apport/+bug/1537635/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
