From: Enrico Weigelt <weigelt@metux.de>
To: git@vger.kernel.org
Subject: Re: large files and low memory
Date: Tue, 5 Oct 2010 02:50:04 +0200 [thread overview]
Message-ID: <20101005005003.GA2768@nibiru.local> (raw)
In-Reply-To: <AANLkTimbdrAqoWMxiteT5zNYmwHp8M698BEv1FLuiAxx@mail.gmail.com>
* Shawn Pearce <spearce@spearce.org> wrote:
> The mmap() isn't the problem. Its the allocation of a buffer that is
> larger than the file in order to hold the result of deflating the file
> before it gets written to disk.
> When the file is bigger than physical memory, the kernel has to
> page in parts of the file as well as swap in and out parts of
> that allocated buffer to hold the deflated file.
What are the access pattern of these memory areas ?
Perhaps madvise() could help ?
cu
--
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Enrico Weigelt, metux IT service -- http://www.metux.de/
phone: +49 36207 519931 email: weigelt@metux.de
mobile: +49 151 27565287 icq: 210169427 skype: nekrad666
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Embedded-Linux / Portierung / Opensource-QM / Verteilte Systeme
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next prev parent reply other threads:[~2010-10-05 0:55 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-04 9:20 large files and low memory Enrico Weigelt
2010-10-04 18:05 ` Shawn Pearce
2010-10-04 18:24 ` Joshua Jensen
2010-10-04 18:57 ` Shawn Pearce
2010-10-05 0:59 ` Enrico Weigelt
2010-10-05 7:41 ` Enrico Weigelt
2010-10-05 8:01 ` Matthieu Moy
2010-10-05 8:17 ` Enrico Weigelt
2010-10-05 11:29 ` Alex Riesen
2010-10-05 11:38 ` Matthieu Moy
2010-10-05 11:55 ` Nguyen Thai Ngoc Duy
2010-10-05 16:42 ` Junio C Hamano
2010-10-05 10:13 ` Nguyen Thai Ngoc Duy
2010-10-05 19:12 ` Nicolas Pitre
2010-10-04 18:58 ` Jonathan Nieder
2010-10-04 19:11 ` Shawn Pearce
2010-10-04 19:16 ` Jonathan Nieder
2010-10-05 10:59 ` Nguyen Thai Ngoc Duy
2010-10-05 20:17 ` Nicolas Pitre
2010-10-05 20:34 ` Jonathan Nieder
2010-10-05 21:11 ` Nicolas Pitre
2010-10-05 0:57 ` Enrico Weigelt
2010-10-05 1:07 ` Ævar Arnfjörð Bjarmason
2010-10-05 1:10 ` Jonathan Nieder
2010-10-05 7:35 ` Enrico Weigelt
2010-10-05 13:47 ` Jonathan Nieder
2010-10-05 0:50 ` Enrico Weigelt [this message]
2010-10-05 19:06 ` Nicolas Pitre
2010-10-05 22:51 ` Enrico Weigelt
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