From: Rick Jones <rick.jones2@hp.com>
To: Linux Network Development list <netdev@vger.kernel.org>
Subject: NIC interrupt assignments under UltraSPARC-T1
Date: Wed, 13 Sep 2006 17:47:27 -0700 [thread overview]
Message-ID: <4508A69F.8060102@hp.com> (raw)
From time to time I "play" with netperf on different systems. I happen
to have occasion to play with a T2000. Under Solaris 10 I am able to
coerce the interrupts of the different core GbEs to be on different
cores rather than strands of the same core.
Under a 2.6.15 kernel (Ubuntu Dapper) it would appear that the old
standby of "echo affinity mask to the IRQ" doesn't "work" - no matter
how I change the mask for a NIC, running a netperf TCP_RR test seems to
show the interrupts happening on the same strand.
Is it indeed not possible to alter the interrupt assignments or have I
(as I'm wont to do) missed something quasi-obvious?
thanks,
rick jones
next reply other threads:[~2006-09-14 0:47 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-14 0:47 Rick Jones [this message]
2006-09-14 1:14 ` NIC interrupt assignments under UltraSPARC-T1 David Miller
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