[Bug 734518] New: High iowait in openSUSE 12.1, due to Snapper default config
https://bugzilla.novell.com/show_bug.cgi?id=734518 https://bugzilla.novell.com/show_bug.cgi?id=734518#c0 Summary: High iowait in openSUSE 12.1, due to Snapper default config Classification: openSUSE Product: openSUSE 12.1 Version: Final Platform: x86-64 OS/Version: Other Status: NEW Severity: Critical Priority: P5 - None Component: Basesystem AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: i@marguerite.su QAContact: qa@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:7.0.1) Gecko/20100101 Firefox/7.0.1 Hi, I'm a fifth grade openSUSE user( I mean I clearly know what I'm doing to openSUSE), recently I installed the amazing openSUSE 12.1 from scartch. the most annoying problem is that it freezes 10 seconds to 2 minutes everytime you move, especially when you browse the internet or locally build a package. and in iostat you will see cpu io i/o iowait is almost 61%. it's really bad. I have a 2-month-less-old harddisk, that shouldn't happen to me at all. I suspected Xorg, btrfs, chromium, firefox, but now I find the finnal solution. It's just because openSUSE's newly introduced btrfs snapshots manager "Snapper"! if you do not configure it yourself, by default it will snapshots and syncs your /, which is the whole disk, including /tmp! /var/tmp! /var/log! so I just edit /etc/snapper/configs/root and set SUBVOLUME to my home directory. Now the world is quiet and openSUSE is fast like sits on a rocket again. I think you guys should really reconsider this configuration and get it changed in later updates. If you can't even move a mouse on this computer, "data security" will be the least priority to you. Reproducible: Always Steps to Reproduce: just install it to a 1.73GHz computer and see. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=734518
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zj jia
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Duncan Mac-Vicar
https://bugzilla.novell.com/show_bug.cgi?id=734518
https://bugzilla.novell.com/show_bug.cgi?id=734518#c1
Arvin Schnell
https://bugzilla.novell.com/show_bug.cgi?id=734518 https://bugzilla.novell.com/show_bug.cgi?id=734518#c2 --- Comment #2 from Marguerite Su 2011-12-10 04:26:27 UTC --- yes, all the time. of course extremely bad when refreshing repositories, 'coz it reads and writes the cache. actually I do not use root account at all. I'm a desktop user, so root is actually meaningless to me, except for "sudo something". my root's home directory is as clean as washed up, I mean it is almost empty. my partition table is like: /home is a separate partition, btrfs, 300GB, 298GB left. /boot is a separate partition, ext4, 500mb, 39mb used. / is a separate partition, btrfs, 50GB, 11GB left. <== /var /tmp is here. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=734518 https://bugzilla.novell.com/show_bug.cgi?id=734518#c3 Marguerite Su changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |NEW InfoProvider|i@marguerite.su | --- Comment #3 from Marguerite Su 2011-12-10 04:27:18 UTC --- remove needinfo tag. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=734518 https://bugzilla.novell.com/show_bug.cgi?id=734518#c4 --- Comment #4 from Marguerite Su 2011-12-10 04:31:56 UTC --- when it freeze, using "iotop" command I can see outputs like: btrfs-transitions or btrfs-submit or btrfs-sync ate 99.99% IO. the first two is commonly seen. even switch the snapper config to my home directory lags too, because there are directories like chromium profiles and mozilla profiles in it. so I just leave the "SUBVOLUME" blank. this time is amazing fast. I love openSUSE again, XD. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=734518
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Arvin Schnell
https://bugzilla.novell.com/show_bug.cgi?id=734518 https://bugzilla.novell.com/show_bug.cgi?id=734518#c6 Marguerite Su changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |CLOSED Resolution| |FIXED --- Comment #6 from Marguerite Su 2012-02-27 00:06:52 UTC --- Yes, it's a general btrfs problem and has been fixed after kernel 3.2 series. further details: http://forums.opensuse.org/forums/english/get-technical-help-here/hardware/4... and to avoid digging old-time posts, I'll not update kernel mailing lists and forum posts further. anyone suffer from the same bug can find an answer if he sees this bug report. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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