From: Michael Riepe <michael.riepe@googlemail.com>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: mingo@elte.hu, linux-kernel@vger.kernel.org, oleg@redhat.com,
peterz@infradead.org, roland@redhat.com, efault@gmx.de,
rjw@sisk.pl, jdike@addtoit.com,
user-mode-linux-devel@lists.sourceforge.net,
torvalds@linux-foundation.org, akpm@linux-foundation.org,
stable@kernel.org
Subject: Re: [patch] fix ptrace slowness
Date: Mon, 23 Mar 2009 20:08:21 +0100 [thread overview]
Message-ID: <49C7DE25.4030706@googlemail.com> (raw)
In-Reply-To: <E1Llmpk-0001A3-2E@pomaz-ex.szeredi.hu>
Hi!
Miklos Szeredi wrote:
> On Mon, 23 Mar 2009, Ingo Molnar wrote:
>
>>* Miklos Szeredi <miklos@szeredi.hu> wrote:
>>
>>
>>>This one incorporates comments from Oleg and Ingo. Please apply
>>>to 2.6.29 and 2.6.2[78]-stable trees.
>>
>>The fix first needs to go upstream. There's an alternative patch
>>below. Would you mind to give it a test? Chances are that it will
>>make UML even faster than your fix.
>
>
> Just the opposite. With my patch a UML image boots in 17 seconnds,
> with your patch it boots in 33 seconds. Without either patch it boots
> in about 5 minutes.
My strace test case runs 60% faster with this patch (compared to Ingo's).
--
Michael "Tired" Riepe <michael.riepe@googlemail.com>
X-Tired: Each morning I get up I die a little
next prev parent reply other threads:[~2009-03-23 19:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-23 15:07 [patch] fix ptrace slowness Miklos Szeredi
2009-03-23 15:19 ` Ingo Molnar
2009-03-23 15:53 ` Oleg Nesterov
2009-03-23 16:13 ` Ingo Molnar
2009-03-23 16:17 ` Miklos Szeredi
2009-03-23 16:38 ` Ingo Molnar
2009-03-23 19:08 ` Michael Riepe [this message]
2009-03-23 16:39 ` [tip:sched/urgent] sched, ptrace: fix UML and " Miklos Szeredi
2009-03-23 17:14 ` Ingo Molnar
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