FC4 hang/interpret slabtop
Bill Perkins
perk at iag.net
Sat Jan 28 04:57:42 UTC 2006
ptfedora3 at majordomo.thedacare.org wrote:
> I have a FC4 machine which hangs frequently.
>
> It does a *lot* of logging from a remote syslog. It can hang at
> unpredictable times, but will also usually become unresponsive around the
> time when logrotate tries to rotate syslogs. My suspicion is there is
> something wrong somewhere between the kernel and syslogd.
>
> I have tried looking at slabtop to see if things are running out of room
> in the kernel. I still think this is the case, but can't find any
> authoritative source on increasing them to compensate.
>
> Here is a view of my slabtop sorted by percentage used:
> Things don't look right to me: there seem to be a lot of things at 100%
> but my efforts to increase them by writing new values into /proc/slabinfo
> are either wrong or ineffective. Any thoughts?
>
>
> [root at syslogger ~]# slabtop
> Active / Total Objects (% used) : 53671 / 74663 (71.9%)
> Active / Total Slabs (% used) : 3335 / 3337 (99.9%)
> Active / Total Caches (% used) : 85 / 123 (69.1%)
> Active / Total Size (% used) : 9067.80K / 13123.39K (69.1%)
> Minimum / Average / Maximum Object : 0.01K / 0.17K / 128.00K
<snipped>
Looks the same here- I'd never heard of slabtop before, where did you
hear about it? Anyway, I get much the same data you do on my system
(P3/1GHz/256Mb), but it's my regular desktop. I've seen mention of ACPI
issues on this list which may cause lockups, as well as memory problems
(have you run memtest86 on the system?).
--
-------------------------------------------------------------------------------
"The two most common things in the | Bill Perkins
universe are Hydrogen and Stupidity." | perk at iag.net
| programmer-at-large
F. Zappa | ALL assembly languages done here.
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