Mailinglist Archive: opensuse-bugs (19817 mails)

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[Bug 390219] ext3 performance is extremely bad
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Wed, 14 May 2008 16:29:07 -0600 (MDT)
  • Message-id: <20080514222907.8171024538D@xxxxxxxxxxxxxxxxxxxxxx>
https://bugzilla.novell.com/show_bug.cgi?id=390219

User captain.magnus@xxxxxxxxxxxx added comment
https://bugzilla.novell.com/show_bug.cgi?id=390219#c2


Magnus Boman <captain.magnus@xxxxxxxxxxxx> changed:

What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDINFO |NEW
Info Provider|captain.magnus@xxxxxxxxxxxx |




--- Comment #2 from Magnus Boman <captain.magnus@xxxxxxxxxxxx> 2008-05-14
16:29:07 MST ---
All partitions are mounted with defaults, so assuming that ordering is not
default, no;

mboman@mblxsrv01:~> cat /etc/fstab
/dev/disk/by-id/scsi-SATA_SAMSUNG_HD501LJS0MUJDSP900849-part1 swap
swap defaults 0 0
/dev/disk/by-id/scsi-SATA_Maxtor_6Y120M0_Y3L2LLXE-part2 swap
swap defaults 0 0
/dev/disk/by-id/scsi-SATA_SAMSUNG_HD501LJS0MUJDSP900849-part7 /
ext3 acl,user_xattr 1 1
proc /proc proc defaults 0 0
sysfs /sys sysfs noauto 0 0
debugfs /sys/kernel/debug debugfs noauto 0 0
usbfs /proc/bus/usb usbfs noauto 0 0
devpts /dev/pts devpts mode=0620,gid=5 0 0
/dev/sda6 /data ext3 rw 0 0


Neither Beagle nor mandb needs to be running for this to be extremly slow. I
actually think Timo Hoenig opened a bug about mandb at some stage complaining
that it drags the machine down. Could be related to this as well.


Please suggest some benchmarking tools and I'll be happy to provide the data.
Not sure how exactly one measures response times in applications.

Looking on the web for more explanations I also found
http://kerneltrap.org/mailarchive/linux-kernel/2008/5/6/1740354 that talks
about some issues with the scheduler that didn't make it for our kernel, but
for all I know, it could have been backported already.


I did however turn synchronous OFF for Firefox as per comment 28 in
https://bugzilla.mozilla.org/show_bug.cgi?id=421482 and FF works a little bit
better after that.


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