http://bugzilla.suse.com/show_bug.cgi?id=911347 --- Comment #20 from Thomas Blume <thomas.blume@suse.com> --- (In reply to Bruno Pesavento from comment #17)
Hm, still 25s, not really good. I'm currently looking at the upstream commits to improve journal flush performance on btrfs (see comment#14). Agree, this is just a workaround to keep old systems rolling, waiting for
(In reply to Thomas Blume from comment #16) the designers to solve the root cause. Journal logs are highly sparse, a 33.6MB file compresses to just 4MB in tar.gz, as a rough measure of info content...
Ok, still investigating more options. A first and quick one is using the autodefrag mount option for /var/log. For details, see: http://www.spinics.net/lists/linux-btrfs/msg41015.html. Can you please check wheter mount /var/log with autodefrag has an impact? Secondly, I've found another commit that could have an influence: http://cgit.freedesktop.org/systemd/systemd/commit/src/journal/journal-file.... I will provide a new testpackages, but first please try the mount option. -- You are receiving this mail because: You are on the CC list for the bug.