From: "K.R. Foley" <kr@cybsft.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel@vger.kernel.org,
Felipe Alfaro Solana <lkml@felipe-alfaro.com>,
Daniel Schmitt <pnambic@unu.nu>,
Lee Revell <rlrevell@joe-job.com>,
Mark_H_Johnson@raytheon.com,
"P.O. Gaillard" <pierre-olivier.gaillard@fr.thalesgroup.com>
Subject: Re: [patch] voluntary-preempt-2.6.9-rc1-bk4-R0
Date: Fri, 03 Sep 2004 12:02:15 -0500 [thread overview]
Message-ID: <4138A397.3060103@cybsft.com> (raw)
In-Reply-To: <20040902215728.GA28571@elte.hu>
Ingo Molnar wrote:
> i've released the -R0 patch:
>
> http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc1-bk4-R0
>
> ontop of:
>
> http://redhat.com/~mingo/voluntary-preempt/diff-bk-040828-2.6.8.1.bz2
>
> i've given up on the netdev_backlog_granularity approach, and as a
> replacement i've modified specific network drivers to return at a safe
> point if softirq preemption is requested. This gives the same end result
> but is more robust. For the time being i've fixed 8193too.c and e100.c.
> (will fix up other drivers too as latencies get reported)
>
> this should fix the crash reported by P.O. Gaillard, and it should solve
> the packet delay/loss issues reported by Mark H Johnson. I cannot see
> any problems on my rtl8193 testbox anymore.
>
> Ingo
>
OK. I previously reported about the system hanging trying to boot this
patch. It may have been a fluke. In any event, it doesn't hang
consistently. I have rebooted several times now without problems. I do
however still get some of these:
(ksoftirqd/0/2): new 131 us maximum-latency critical section.
=> started at: <netif_receive_skb+0x82/0x280>
=> ended at: <netif_receive_skb+0x1d7/0x280>
[<c0136789>] check_preempt_timing+0x119/0x1f0
[<c0255017>] netif_receive_skb+0x1d7/0x280
[<c0255017>] netif_receive_skb+0x1d7/0x280
[<c013699d>] sub_preempt_count+0x4d/0x70
[<c013699d>] sub_preempt_count+0x4d/0x70
[<c0255017>] netif_receive_skb+0x1d7/0x280
[<d08d40b7>] e100_poll+0x5b7/0x630 [e100]
[<c013699d>] sub_preempt_count+0x4d/0x70
[<c025527f>] net_rx_action+0x7f/0x110
[<c011eb55>] ___do_softirq+0x75/0x90
[<c011ec1e>] _do_softirq+0xe/0x20
[<c011f034>] ksoftirqd+0x94/0xe0
[<c012f8aa>] kthread+0xaa/0xb0
[<c011efa0>] ksoftirqd+0x0/0xe0
[<c012f800>] kthread+0x0/0xb0
[<c0104575>] kernel_thread_helper+0x5/0x10
next prev parent reply other threads:[~2004-09-03 17:03 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-30 19:13 [patch] voluntary-preempt-2.6.9-rc1-bk4-Q5 Mark_H_Johnson
2004-08-30 19:21 ` Ingo Molnar
2004-09-01 12:31 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-Q5 - netdev_max_back_log is too small P.O. Gaillard
2004-09-01 13:05 ` Ingo Molnar
2004-09-02 11:24 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-Q6 - network is no longer smooth P.O. Gaillard
2004-09-02 11:28 ` Ingo Molnar
2004-09-02 15:26 ` P.O. Gaillard
2004-08-31 8:49 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-Q5 Ingo Molnar
2004-09-02 6:33 ` Ingo Molnar
2004-09-02 6:55 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-Q8 Ingo Molnar
2004-09-02 7:04 ` Lee Revell
2004-09-02 7:15 ` Ingo Molnar
2004-09-02 7:31 ` Lee Revell
2004-09-02 7:46 ` Ingo Molnar
2004-09-03 1:10 ` Rusty Russell
2004-09-03 1:10 ` Rusty Russell
2004-09-02 23:25 ` Lee Revell
2004-09-02 23:28 ` Ingo Molnar
2004-09-02 23:32 ` Lee Revell
2004-09-02 7:17 ` Ingo Molnar
2004-09-02 8:23 ` Ingo Molnar
2004-09-02 11:10 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-Q9 Ingo Molnar
2004-09-02 12:14 ` Thomas Charbonnel
2004-09-02 13:16 ` Thomas Charbonnel
2004-09-02 13:23 ` Ingo Molnar
2004-09-02 14:38 ` Thomas Charbonnel
2004-09-02 21:57 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R0 Ingo Molnar
2004-09-02 22:06 ` Lee Revell
2004-09-02 22:14 ` Ingo Molnar
2004-09-02 22:15 ` Lee Revell
2004-09-03 0:24 ` Lee Revell
2004-09-03 3:17 ` Eric St-Laurent
2004-09-03 6:26 ` Lee Revell
2004-09-03 6:36 ` Ingo Molnar
2004-09-03 6:49 ` Lee Revell
2004-09-03 7:01 ` Ingo Molnar
2004-09-03 7:05 ` Ingo Molnar
2004-09-03 7:40 ` Lee Revell
2004-09-03 7:50 ` Free Ekanayaka
2004-09-03 8:05 ` Lee Revell
2004-09-03 9:05 ` Free Ekanayaka
2004-09-03 9:25 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R1 Ingo Molnar
2004-09-03 9:50 ` Luke Yelavich
2004-09-03 10:29 ` Ingo Molnar
2004-09-03 10:43 ` Luke Yelavich
2004-09-03 11:33 ` Thomas Charbonnel
2004-09-03 11:49 ` Ingo Molnar
2004-09-03 12:05 ` Thomas Charbonnel
2004-09-03 16:14 ` Thomas Charbonnel
2004-09-03 17:36 ` Thomas Charbonnel
2004-09-03 11:36 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R2 Ingo Molnar
2004-09-03 8:09 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R0 Luke Yelavich
2004-09-03 8:13 ` Lee Revell
2004-09-03 8:21 ` Luke Yelavich
2004-09-03 12:52 ` Luke Yelavich
2004-09-03 18:09 ` K.R. Foley
2004-09-03 11:04 ` K.R. Foley
2004-09-03 17:02 ` K.R. Foley [this message]
2004-09-03 20:40 ` Lee Revell
2004-09-03 17:10 ` K.R. Foley
2004-09-03 18:17 ` Ingo Molnar
2004-09-03 18:36 ` K.R. Foley
2004-09-03 19:30 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R3 Ingo Molnar
2004-09-03 19:49 ` K.R. Foley
2004-09-04 3:39 ` K.R. Foley
2004-09-04 3:43 ` K.R. Foley
2004-09-04 6:41 ` Ingo Molnar
2004-09-04 12:28 ` K.R. Foley
2004-09-04 8:57 ` Ingo Molnar
2004-09-04 10:16 ` Lee Revell
2004-09-04 14:35 ` K.R. Foley
2004-09-04 20:05 ` Ingo Molnar
2004-09-03 18:39 ` [patch] voluntary-preempt-2.6.9-rc1-bk4-R0 Ingo Molnar
2004-09-03 18:41 ` K.R. Foley
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