Re: [Xen-devel] Interrupt levels

[Nicholas Lee <nic-lists@xxxxxxxxxxxxxx>]

On Tue, Mar 08, 2005 at 11:07:53AM -0000, Ian Pratt wrote:
> Since processing timer interrupts are cheap there's no urgent fix
> required.
> The real question is why are you blocking/unblocking at a rate of
> 55k/second.

Seems to be affecting my interactive latency though. I was going to
test a headless NX desktop install, I'll probably hold off on that for a
little while.

> What are your domains doing? What interrupt rates do they see?


NFS, qmail, apache/php, imap and openvpn are the main services. Very low
load. Two imap sessions, one openvpn sessions. Not more than 2000 emails
per day.  CRM114 and clamav virus/spam scanning. mutt.

Postgres and mysql, on very low loads.

vmstat intr figures for the guest domU domains is usually <30.

I'm going reduce a dom0 kernel configure to the minimal and see how that
functions.

Nicholas


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