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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Emmanuel Puerto <emmanuel.puerto@maxim-ic.com>
Cc: Jeff King <peff@peff.net>, "git@vger.kernel.org" <git@vger.kernel.org>
Subject: RE: [BUG] malloc error when using large file.
Date: Tue, 23 Jun 2009 14:15:21 -0700 (PDT)	[thread overview]
Message-ID: <alpine.LFD.2.01.0906231412070.3240@localhost.localdomain> (raw)
In-Reply-To: <B03A893ADFE80748942D13AFAF2845190C2D5D3BDC@ITSVLEX06.it.maxim-ic.internal>



On Tue, 23 Jun 2009, Emmanuel Puerto wrote:
> 
> 
> > Many operations in git assume that a whole file can be held in memory at
> > once. Do you actually have 2G available on the machine? Are there any OS
> > limits that might be a problem?
> 
> Thanks for your answer Jeff, 
> 
> Yes I have more that 2 Go available when a do it, and after this 
> allocation error if I try to do a 'git add' with a 9Go file, I did not 
> have any issue.

Can you add the 2GB files individually, using

	for i in All-f00?.vmdk; do git add $i; done

or similar?

It does sound like an unlucky malloc VM space fragmentation issue, 
although since the files you add are the same size I'd have not really 
expected that with any normal malloc library. But with some mixed small 
and large allocations, I could imagine that the fragmentation happens, and 
you end up having huge areas that aren't _quite_ useful for the next file 
due to having some small allocation taking part of it.

		Linus

  parent reply	other threads:[~2009-06-23 21:15 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-22  9:54 [BUG] malloc error when using large file Emmanuel Puerto
2009-06-22 21:15 ` Jeff King
2009-06-23  7:05   ` Emmanuel Puerto
2009-06-23 18:42     ` Jeff King
2009-06-23 21:15     ` Linus Torvalds [this message]
2009-06-24  8:35       ` Emmanuel Puerto

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