Device polling

[Ruslan Ermilov]

On Sun, Jun 13, 2004 at 01:07:28PM -0500, Jon Noack wrote:
[...]
> I just tested this on my SMP all-in-one home server (Web, Mail, NFS, 
> Samba, Squid, etc.).  It's been up for over 24 hours with no apparent 
> issues.  The machine is used pretty heavily, with NFS mounted home 
> directories and CVS mirror (see below) -- a CVS update of the src tree 
> over NFS has done a good job of breaking fragile setups in the past. 
> Everything seemed OK.  That said, peak performance (as tested by iperf) 
> took a nosedive: with 32-bit em adapters (gige), tcp bandwidth dropped 
> from over 360Mbps to around 200 Mbps.  If anyone has any suggestions for 
> more in-depth testing, I'd be willing to try them.  If I have the time I 
> may also try the latest netperf patch and see how that affects things.
> 
What are your operational polling(4) parameters?  What the HZ is set to?


Cheers,
-- 
Ruslan Ermilov
ru at FreeBSD.org
FreeBSD committer
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