From: David Miller <davem@davemloft.net>
To: ak@suse.de
Cc: akepner@sgi.com, kuznet@ms2.inr.ac.ru, dev@sw.ru, netdev@vger.kernel.org
Subject: Re: [PATCH] limit rt cache size
Date: Tue, 08 Aug 2006 17:32:56 -0700 (PDT) [thread overview]
Message-ID: <20060808.173256.64863348.davem@davemloft.net> (raw)
In-Reply-To: <200608090224.04158.ak@suse.de>
From: Andi Kleen <ak@suse.de>
Date: Wed, 9 Aug 2006 02:24:04 +0200
> Yes, but even with dynamic growth you still need some upper boundary
> (otherwise a DOS could eat all your memory). And it would need
> to be figured out what it is.
Absolutely. Otherwise the GC'ing of the routing cache would
break horribly.
> BTW does dynamic shrink after a load spike make sense too?
I'm not sure about that bit yet.
> Or do some cheesy default and document the options to change
> it clearly and wait for feedback from users on what works for
> them?
I think this makes sense. An initial upper limit of 1 million hash
table slots seems reasonable at first. That's 8MB on a 64-bit
machine.
next prev parent reply other threads:[~2006-08-09 0:33 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <44D75EF8.1070901@sw.ru>
2006-08-07 16:48 ` [PATCH] limit rt cache size Alexey Kuznetsov
2006-08-08 3:42 ` David Miller
2006-08-08 5:11 ` Andi Kleen
2006-08-08 6:18 ` David Miller
2006-08-08 6:53 ` Andi Kleen
2006-08-08 7:01 ` David Miller
2006-08-08 12:54 ` Kirill Korotaev
2006-08-08 12:58 ` Andi Kleen
2006-08-08 20:37 ` akepner
2006-08-08 23:23 ` Andi Kleen
2006-08-09 0:06 ` akepner
2006-08-09 0:11 ` David Miller
2006-08-09 0:11 ` akepner
2006-08-09 0:22 ` David Miller
2006-08-09 1:02 ` Andi Kleen
2006-08-09 16:16 ` akepner
2006-08-09 16:32 ` Andi Kleen
2006-08-10 0:02 ` David Miller
2006-08-09 8:05 ` Kirill Korotaev
2006-08-09 0:24 ` Andi Kleen
2006-08-09 0:32 ` David Miller [this message]
2006-08-09 8:09 ` Kirill Korotaev
2006-08-09 8:53 ` Eric Dumazet
2006-08-09 9:22 ` David Miller
2006-08-08 8:17 ` Kirill Korotaev
2006-08-08 8:34 ` David Miller
2006-08-08 8:57 ` Eric Dumazet
2006-08-08 9:12 ` David Miller
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