From: Andrea Arcangeli <andrea@suse.de>
To: Andi Kleen <ak@muc.de>
Cc: Rik van Riel <riel@redhat.com>,
Dmitry Yusupov <dmitry_yus@yahoo.com>,
mpm@selenic.com, michaelc@cs.wisc.edu,
open-iscsi@googlegroups.com,
James.Bottomley@HansenPartnership.com,
ksummit-2005-discuss@thunk.org, netdev@oss.sgi.com
Subject: Re: [Ksummit-2005-discuss] Summary of 2005 Kernel Summit Proposed Topics
Date: Mon, 28 Mar 2005 18:22:00 +0200 [thread overview]
Message-ID: <20050328162200.GC19137@g5.random> (raw)
In-Reply-To: <m1zmwn21hk.fsf@muc.de>
On Mon, Mar 28, 2005 at 06:12:39PM +0200, Andi Kleen wrote:
> So in short using mempools on receiving is not needed.
I think you are assuming that there's still some atomic memory available
sometime in the future to allocate the skb for the ack, this isn't
necessairly true.
I outlined an algo that thanks to proper mempool-like reservation and
random picking of all mempool registered on a single nic, will avoid the
deadlock for receive. The less mempools there are and the bigger they
are, the faster it will recover.
next prev parent reply other threads:[~2005-03-28 16:22 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4241D106.8050302@cs.wisc.edu>
[not found] ` <20050324101622S.fujita.tomonori@lab.ntt.co.jp>
[not found] ` <1111628393.1548.307.camel@beastie>
[not found] ` <20050324113312W.fujita.tomonori@lab.ntt.co.jp>
[not found] ` <1111633846.1548.318.camel@beastie>
[not found] ` <20050324215922.GT14202@opteron.random>
[not found] ` <424346FE.20704@cs.wisc.edu>
[not found] ` <20050324233921.GZ14202@opteron.random>
[not found] ` <20050325034341.GV32638@waste.org>
[not found] ` <20050327035149.GD4053@g5.random>
2005-03-27 5:48 ` [Ksummit-2005-discuss] Summary of 2005 Kernel Summit Proposed Topics Matt Mackall
2005-03-27 6:04 ` Andrea Arcangeli
2005-03-27 6:38 ` Matt Mackall
2005-03-27 14:50 ` Andrea Arcangeli
2005-03-27 6:33 ` Dmitry Yusupov
2005-03-27 6:46 ` David S. Miller
2005-03-27 7:05 ` Dmitry Yusupov
2005-03-27 7:57 ` David S. Miller
2005-03-27 8:18 ` Dmitry Yusupov
2005-03-27 18:26 ` Mike Christie
2005-03-27 18:31 ` David S. Miller
2005-03-27 19:58 ` Matt Mackall
2005-03-27 21:49 ` Dmitry Yusupov
2005-03-27 18:47 ` Dmitry Yusupov
2005-03-27 21:14 ` Alex Aizman
[not found] ` <20050327211506.85EDA16022F6@mx1.suse.de>
2005-03-28 0:15 ` Andrea Arcangeli
2005-03-28 3:54 ` Rik van Riel
2005-03-28 4:34 ` David S. Miller
2005-03-28 4:50 ` Rik van Riel
2005-03-28 6:58 ` Alex Aizman
2005-03-28 16:12 ` Andi Kleen
2005-03-28 16:22 ` Andrea Arcangeli [this message]
2005-03-28 16:24 ` Rik van Riel
2005-03-29 15:11 ` Andi Kleen
2005-03-29 15:29 ` Rik van Riel
2005-03-29 17:03 ` Matt Mackall
2005-03-28 16:28 ` James Bottomley
2005-03-29 15:20 ` Andi Kleen
2005-03-29 15:56 ` James Bottomley
2005-03-29 17:19 ` Dmitry Yusupov
2005-03-29 21:08 ` jamal
2005-03-29 22:00 ` Rik van Riel
2005-03-29 22:17 ` Matt Mackall
2005-03-29 23:30 ` jamal
2005-03-29 23:00 ` jamal
2005-03-29 23:25 ` Matt Mackall
2005-03-30 0:30 ` H. Peter Anvin
2005-03-30 15:24 ` Andi Kleen
2005-03-29 22:03 ` Rick Jones
2005-03-29 23:13 ` jamal
2005-03-30 2:28 ` Alex Aizman
[not found] ` <E1DGSwp-0004ZE-00@thunker.thunk.org>
2005-03-30 17:16 ` Grant Grundler
2005-03-30 18:46 ` Dmitry Yusupov
2005-03-30 15:22 ` Andi Kleen
2005-03-30 15:33 ` Andrea Arcangeli
2005-03-30 15:38 ` Rik van Riel
2005-03-30 15:39 ` Andi Kleen
2005-03-30 15:44 ` Andrea Arcangeli
2005-03-30 15:50 ` Rik van Riel
2005-03-30 16:04 ` James Bottomley
2005-03-30 17:48 ` H. Peter Anvin
2005-03-30 16:02 ` Andi Kleen
2005-03-30 16:15 ` Andrea Arcangeli
2005-03-30 16:55 ` jamal
2005-03-30 18:42 ` Rik van Riel
2005-03-30 19:28 ` Alex Aizman
2005-03-31 11:41 ` Andi Kleen
2005-03-31 12:12 ` Rik van Riel
2005-03-31 18:59 ` Andi Kleen
2005-03-31 19:04 ` Rik van Riel
2005-03-31 15:35 ` Grant Grundler
2005-03-31 19:15 ` Alex Aizman
2005-03-31 19:34 ` Andi Kleen
2005-03-31 19:39 ` Rik van Riel
2005-03-31 11:45 ` Andi Kleen
2005-03-31 11:50 ` Andi Kleen
2005-03-31 17:09 ` Andrea Arcangeli
2005-03-31 22:05 ` Dmitry Yusupov
2005-03-30 17:24 ` Matt Mackall
2005-03-30 17:39 ` Dmitry Yusupov
2005-03-30 20:10 ` Mike Christie
2005-03-30 17:07 ` Grant Grundler
2005-03-30 5:12 ` H. Peter Anvin
2005-03-28 16:37 ` Dmitry Yusupov
2005-03-28 19:45 ` Roland Dreier
2005-03-28 20:32 ` Topic: Remote DMA network technologies Gerrit Huizenga
2005-03-28 20:36 ` Roland Dreier
[not found] ` <1112042936.5088.22.camel@beastie>
2005-03-28 22:32 ` [Ksummit-2005-discuss] Summary of 2005 Kernel Summit Proposed Topics Benjamin LaHaise
2005-03-29 3:19 ` Linux support for RDMA (was: [Ksummit-2005-discuss] Summary of 2005 Kernel Summit Proposed Topics) Roland Dreier
2005-03-30 16:00 ` Benjamin LaHaise
2005-03-31 1:08 ` Linux support for RDMA H. Peter Anvin
2005-04-02 18:08 ` [Ksummit-2005-discuss] Summary of 2005 Kernel Summit Proposed Topics Dmitry Yusupov
2005-04-02 19:13 ` Ming Zhang
2005-04-04 6:31 ` Grant Grundler
2005-04-04 18:57 ` Rick Jones
2005-03-29 3:14 ` Linux support for RDMA (was: [Ksummit-2005-discuss] Summary of 2005 Kernel Summit Proposed Topics) Roland Dreier
[not found] <42472259.2866086e.3169.318fSMTPIN_ADDED@mx.googlegroups.com>
2005-03-27 21:18 ` [Ksummit-2005-discuss] Summary of 2005 Kernel Summit Proposed Topics Alex Aizman
2005-03-27 21:53 Alex Aizman
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