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Re: filecache/swapcache questions [RFC] [RFT] [PATCH] kanoj-mm12-2.3.8

To: Chuck Lever <cel@monkey.org>
Subject: Re: filecache/swapcache questions [RFC] [RFT] [PATCH] kanoj-mm12-2.3.8
From: "Stephen C. Tweedie" <sct@redhat.com>
Date: Tue, 29 Jun 1999 12:14:53 +0100 (BST)
Cc: "Stephen C. Tweedie" <sct@redhat.com>, Kanoj Sarcar <kanoj@google.engr.sgi.com>, andrea@suse.de, torvalds@transmeta.com, linux-mm@kvack.org
In-Reply-To: <Pine.BSO.4.10.9906282052110.10964-100000@funky.monkey.org>
References: <14199.62047.543601.273526@dukat.scot.redhat.com><Pine.BSO.4.10.9906282052110.10964-100000@funky.monkey.org>
ReSent-Date: Tue, 29 Jun 1999 09:29:53 -0400 (EDT)
ReSent-From: Benjamin LaHaise <bcrl@kvack.org>
ReSent-Message-ID: <Pine.LNX.3.96.990629092953.7614D@mole.spellcast.com>
ReSent-To: linux-mm@kvack.org
Sender: owner-linux-mm@kvack.org

Hi,

On Mon, 28 Jun 1999 20:53:23 -0400 (EDT), Chuck Lever <cel@monkey.org>
said:

> whoops.  i'm sorry, i mis-typed.  i meant that regular processes never
> *dispatch* I/O.  neither kswapd nor regular processes will wait.

Sorry?  That's just the same problem, restated.  If a regular process
will never wait on a memory allocation then you have no way of
throttling the memory allocation rate to the rate at which you can
swap stuff out.  That will kill your machine stone dead very rapidly
under heavy memory load.

--Stephen

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References:
- Re: filecache/swapcache questions [RFC] [RFT] [PATCH] kanoj-mm12-2.3.8
  - From: "Stephen C. Tweedie" <sct@redhat.com>
- Re: filecache/swapcache questions [RFC] [RFT] [PATCH] kanoj-mm12-2.3.8
  - From: Chuck Lever <cel@monkey.org>
- Re: filecache/swapcache questions [RFC] [RFT] [PATCH] kanoj-mm12-2.3.8
  - From: Chuck Lever <cel@monkey.org>

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