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Re: %u-order allocation failed

To: mikulas@xxxxxxxxxxxxxxxxxxxxxxxx (Mikulas Patocka)
Subject: Re: %u-order allocation failed
From: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Date: Sun, 7 Oct 2001 15:12:37 +0100 (BST)
Cc: alan@xxxxxxxxxxxxxxxxxxx (Alan Cox), riel@xxxxxxxxxxxxxxxx (Rik van Riel), kszysiu@xxxxxxxxxxxxxxxxx (Krzysztof Rusocki), linux-xfs@xxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <Pine.LNX.3.96.1011007141040.1764A-100000@artax.karlin.mff.cuni.cz> from "Mikulas Patocka" at Oct 07, 2001 02:28:17 PM
Sender: owner-linux-xfs@xxxxxxxxxxx
> Yes - you can run out of vmalloc space. But you run out of it only when
> you create too many processes (8192), load too many modules etc. If
> someone needs to put such heavy load on linux, we can expect that he is
> not a luser and he knows how to increase size of vmalloc space.

Not just that - you get fragmentation of it which leads you back to the
same situation as kmalloc except that with the guard pages you fragment the
address space more.

Alan


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