kernel: dst cache overflow

[Alexander Dalloz]

Am Mi, den 06.07.2005 schrieb André Cruz um 18:22:

> > As far as I see FLP hasn't a newer kernel in the queue actually.
> > 
> > http://www.netcore.fi/pekkas/buglist-fc2.html
> 
> Ok... You said you recompiled FC3 latest kernel, I assume it works
> correctly. Have you tried FC4's kernel or the latest 2.6.12 from
> kernel.org? I would prefer kernel.org's since I would only have to apply
> patches from time to time. Do you think it works with FC2?

A vanilla kernel should do, yes.
I didn't rpmbuild one of the latest FC3 or FC4 src.rpms as I am in the
process to migrate to FC4 (fresh install).

> > I don't have experience with such a setup, but it sounds reasonable that
> > a lot of NFS hosts causes your situation. Do those outside hosts hoave
> > dynamic IPs?
> > google search didn't bring me a good hint. Found a former thread
> > 
> > http://forums.fedoraforum.org/archive/index.php/t-39765.html
> 
> I had already come across that post but didn't find any solution...
> 
> The hosts all have static IPs.
> 
> Here is a little output from rtstat
> 
> [root at saf113 root]# ~/rtstat
>  size   IN: hit     tot    mc no_rt bcast madst masrc  OUT: hit     tot     mc GC: tot ignored goal_miss ovrf HASH: in_search out_search
> 18910      2500      28     0     0     0 1602010056 1601598672         0       0      0      28      27         1    0               3          0
> 18914      4728      46     0     0     1     0     0       110       4      0      20      19         1    0               0          0
> 18915      4409      28     0     0     2     0     0       118       5      0      12      10         1    0               0          0
> 
> As you can see in the last week it has doubled from 9000 to almost 19000. 

Sorry, can't give you are valuable answer. The only workaround I can
think of is to regularly and manually flush the cache
(/proc/sys/net/ipv4/route/flush).

> André Cruz

Alexander


-- 
Alexander Dalloz | Enger, Germany | GPG http://pgp.mit.edu 0xB366A773
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Fedora Core 2 GNU/Linux on Athlon with kernel 2.6.11-1.35_FC2smp 
Serendipity 18:55:24 up 11 days, 1:47, load average: 0.05, 0.30, 0.35 
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