From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: "Török Edwin" <edwintorok@gmail.com>
Cc: Nick Piggin <npiggin@suse.de>, Mike Waychison <mikew@google.com>,
Ying Han <yinghan@google.com>, Ingo Molnar <mingo@elte.hu>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
akpm <akpm@linux-foundation.org>,
David Rientjes <rientjes@google.com>,
Rohit Seth <rohitseth@google.com>,
Hugh Dickins <hugh@veritas.com>, "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [RFC v1][PATCH]page_fault retry with NOPAGE_RETRY
Date: Thu, 27 Nov 2008 13:32:36 +0100 [thread overview]
Message-ID: <1227789156.4454.1519.camel@twins> (raw)
In-Reply-To: <492E90BC.1090208@gmail.com>
On Thu, 2008-11-27 at 14:21 +0200, Török Edwin wrote:
> How about distributing tasks to a set of worked threads, is the
> overhead of using IPC instead of mutexes/cond variables acceptable?
Inter process pthread mutexes should be very fast in the latest kernels
as they'll avoid the mmap_sem by use of get_user_pages_fast().
Not sure if pthread condition variables also work inter-process.
WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: "Török Edwin" <edwintorok@gmail.com>
Cc: Nick Piggin <npiggin@suse.de>, Mike Waychison <mikew@google.com>,
Ying Han <yinghan@google.com>, Ingo Molnar <mingo@elte.hu>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
akpm <akpm@linux-foundation.org>,
David Rientjes <rientjes@google.com>,
Rohit Seth <rohitseth@google.com>,
Hugh Dickins <hugh@veritas.com>, "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [RFC v1][PATCH]page_fault retry with NOPAGE_RETRY
Date: Thu, 27 Nov 2008 13:32:36 +0100 [thread overview]
Message-ID: <1227789156.4454.1519.camel@twins> (raw)
In-Reply-To: <492E90BC.1090208@gmail.com>
On Thu, 2008-11-27 at 14:21 +0200, TA?rA?k Edwin wrote:
> How about distributing tasks to a set of worked threads, is the
> overhead of using IPC instead of mutexes/cond variables acceptable?
Inter process pthread mutexes should be very fast in the latest kernels
as they'll avoid the mmap_sem by use of get_user_pages_fast().
Not sure if pthread condition variables also work inter-process.
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next prev parent reply other threads:[~2008-11-27 12:33 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-22 6:47 [RFC v1][PATCH]page_fault retry with NOPAGE_RETRY Ying Han
2008-11-22 6:47 ` Ying Han
2008-11-22 7:15 ` Andrew Morton
2008-11-22 7:15 ` Andrew Morton
2008-11-23 9:18 ` Ingo Molnar
2008-11-23 9:18 ` Ingo Molnar
2008-11-23 18:24 ` Andrew Morton
2008-11-23 18:24 ` Andrew Morton
2008-11-25 18:42 ` Ying Han
2008-11-25 18:42 ` Ying Han
2008-11-26 12:32 ` Nick Piggin
2008-11-26 12:32 ` Nick Piggin
2008-11-26 19:57 ` Mike Waychison
2008-11-26 19:57 ` Mike Waychison
2008-11-27 8:55 ` Nick Piggin
2008-11-27 8:55 ` Nick Piggin
2008-11-27 9:28 ` Mike Waychison
2008-11-27 9:28 ` Mike Waychison
2008-11-27 10:00 ` Peter Zijlstra
2008-11-27 10:00 ` Peter Zijlstra
2008-11-27 10:14 ` Nick Piggin
2008-11-27 10:14 ` Nick Piggin
2008-11-27 19:22 ` Mike Waychison
2008-11-27 19:22 ` Mike Waychison
2008-11-28 9:41 ` Nick Piggin
2008-11-28 9:41 ` Nick Piggin
2008-11-28 22:46 ` Mike Waychison
2008-11-28 22:46 ` Mike Waychison
2008-11-27 11:08 ` KOSAKI Motohiro
2008-11-27 11:08 ` KOSAKI Motohiro
2008-11-27 19:10 ` Mike Waychison
2008-11-27 19:10 ` Mike Waychison
2008-11-27 11:39 ` Török Edwin
2008-11-27 11:39 ` Török Edwin
2008-11-27 12:03 ` Nick Piggin
2008-11-27 12:03 ` Nick Piggin
2008-11-27 12:21 ` Török Edwin
2008-11-27 12:21 ` Török Edwin
2008-11-27 12:32 ` Peter Zijlstra [this message]
2008-11-27 12:32 ` Peter Zijlstra
2008-11-27 12:39 ` Nick Piggin
2008-11-27 12:39 ` Nick Piggin
2008-11-27 12:52 ` Török Edwin
2008-11-27 12:52 ` Török Edwin
2008-11-27 13:05 ` Nick Piggin
2008-11-27 13:05 ` Nick Piggin
2008-11-27 13:10 ` Török Edwin
2008-11-27 13:10 ` Török Edwin
2008-11-27 13:12 ` Nick Piggin
2008-11-27 13:12 ` Nick Piggin
2008-11-27 13:23 ` Török Edwin
2008-11-27 13:23 ` Török Edwin
2008-11-28 12:10 ` Nick Piggin
2008-11-28 12:10 ` Nick Piggin
2008-11-30 19:38 ` Török Edwin
2008-11-30 19:38 ` Török Edwin
2008-12-01 8:52 ` Nick Piggin
2008-12-01 8:52 ` Nick Piggin
2008-12-01 11:13 ` Nick Piggin
2008-12-01 11:13 ` Nick Piggin
2008-12-01 11:37 ` Török Edwin
2008-12-01 11:37 ` Török Edwin
2008-12-04 22:27 ` Ying Han
2008-12-04 22:27 ` Ying Han
2008-12-05 6:50 ` Török Edwin
2008-12-05 6:50 ` Török Edwin
2008-11-27 13:08 ` Nick Piggin
2008-11-27 13:08 ` Nick Piggin
2008-11-27 19:03 ` Mike Waychison
2008-11-27 19:03 ` Mike Waychison
2008-11-28 9:37 ` Nick Piggin
2008-11-28 9:37 ` Nick Piggin
2008-11-28 23:02 ` Mike Waychison
2008-11-28 23:02 ` Mike Waychison
2008-11-30 19:54 ` Török Edwin
2008-11-30 19:54 ` Török Edwin
2008-12-01 4:50 ` Mike Waychison
2008-12-01 4:50 ` Mike Waychison
2008-12-01 8:58 ` Nick Piggin
2008-12-01 8:58 ` Nick Piggin
2008-12-01 11:45 ` Nick Piggin
2008-12-01 11:45 ` Nick Piggin
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