atom feed192 messages in org.freebsd.freebsd-archRe: FreeBSD problems and preliminary ...
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117 later messages
Subject:Re: FreeBSD problems and preliminary ways to solve
From:Lev Serebryakov (le@FreeBSD.org)
Date:Aug 19, 2011 2:27:56 am
List:org.freebsd.freebsd-arch

Hello, Slawa. You wrote 19 августа 2011 г., 13:23:04:

There are a few known issues in terms of parallelism -- one is contention between the ithread and user thread on per-TCP connection locks. Another is that we still haven't managed to switch to per-CPU statistics for the network stack (which is fairly straight forward in a specific sense, but we'd like a proper abstraction for it so we can generalise).

After discussion in other place: may be perfomace improve if application resheduling on the same core, as processing incoming IP packet (hot CPU caсhe)?

Yes, it is exactly what our admins done, and it helps, but if streams will grow (and they WILL) here will be a little space to grow up performance as well. But it is completely offtopic already.

-- // Black Lion AKA Lev Serebryakov <le@serebryakov.spb.ru>

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