On Thu, 13 Dec 2007, Krzysztof Oledzki wrote:
On Thu, 13 Dec 2007, Peter Zijlstra wrote:
On Thu, 2007-12-13 at 16:17 +0100, Krzysztof Oledzki wrote:
BTW: Could someone please look at this problem? I feel little ignored and
in my situation this is a critical regression.
I was hoping to get around to it today, but I guess tomorrow will have
to do :-/
Thanks.
So, its ext3, dirty some pages, sync, and dirty doesn't fall to 0,
right?
Not only doesn't fall but continuously grows.
Does it happen with other filesystems as well?
Don't know. I generally only use ext3 and I'm afraid I'm not able to switch
this system to other filesystem.
What are you ext3 mount options?
/dev/root / ext3 rw,data=journal 0 0
/dev/VolGrp0/usr /usr ext3 rw,nodev,data=journal 0 0
/dev/VolGrp0/var /var ext3 rw,nodev,data=journal 0 0
/dev/VolGrp0/squid_spool /var/cache/squid/cd0 ext3
rw,nosuid,nodev,noatime,data=writeback 0 0
/dev/VolGrp0/squid_spool2 /var/cache/squid/cd1 ext3
rw,nosuid,nodev,noatime,data=writeback 0 0
/dev/VolGrp0/news_spool /var/spool/news ext3
rw,nosuid,nodev,noatime,data=ordered 0 0
BTW: this regression also exists in 2.6.24-rc5. I'll try to find when it
was introduced but it is hard to do it on a highly critical production
system, especially since it takes ~2h after a reboot, to be sure.
However, 2h is quite good time, on other systems I have to wait ~2 months
to get 20MB of leaked memory:
# uptime
13:29:34 up 58 days, 13:04, 9 users, load average: 0.38, 0.27, 0.31
# sync;sync;sleep 1;sync;grep Dirt /proc/meminfo
Dirty: 23820 kB
Best regards,
Krzysztof Olędzki
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