From: Roland Dreier <rdreier-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
To: tziporet-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org
Cc: Jason Gunthorpe
<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>,
Linux RDMA list
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
ewg <ewg-ZwoEplunGu1OwGhvXhtEPSCwEArCW2h5@public.gmane.org>,
Eli Cohen <eli-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org>
Subject: Re: [PATCH] mlx4_core: request MSIX vectors as much as there CPU cores
Date: Wed, 05 May 2010 12:55:54 -0700 [thread overview]
Message-ID: <ada6332jf79.fsf@roland-alpha.cisco.com> (raw)
In-Reply-To: <adaaasejfew.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org> (Roland Dreier's message of "Wed, 05 May 2010 12:51:19 -0700")
> We found it in performance work of our EN (10G) driver
By the way, it would certainly make sense for the ethernet driver to use
a number of queues that matches num_online_cpus() at the time the
interface is brought up. Since we can't change the # of MSI-X vectors
very easily I think we need to allow for the possible CPUs, but bouncing
a net interface seems lighter weight to me.
Although perhaps reloading a driver on CPU hotplug is OK too?
- R.
--
Roland Dreier <rolandd-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org> || For corporate legal information go to:
http://www.cisco.com/web/about/doing_business/legal/cri/index.html
next prev parent reply other threads:[~2010-05-05 19:55 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-05 11:30 [PATCH] mlx4_core: request MSIX vectors as much as there CPU cores Eli Cohen
[not found] ` <20100505113047.GA12242-8YAHvHwT2UEvbXDkjdHOrw/a8Rv0c6iv@public.gmane.org>
2010-05-05 14:54 ` Roland Dreier
[not found] ` <adahbmmpfep.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-05-05 16:32 ` Jason Gunthorpe
[not found] ` <20100505163252.GG15969-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-05-05 19:34 ` [ewg] " Tziporet Koren
[not found] ` <4BE1C82F.4000009-VPRAkNaXOzVS1MOuV/RT9w@public.gmane.org>
2010-05-05 19:51 ` Roland Dreier
[not found] ` <adaaasejfew.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-05-05 19:55 ` Roland Dreier [this message]
[not found] ` <ada6332jf79.fsf-BjVyx320WGW9gfZ95n9DRSW4+XlvGpQz@public.gmane.org>
2010-05-06 7:49 ` Eli Cohen
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