From: Patrick McHardy <kaber@trash.net>
To: David Lang <david.lang@digitalinsight.com>
Cc: netfilter@lists.netfilter.org
Subject: Re: even hash tables sizes, FAQ entry
Date: Fri, 20 Jul 2007 19:50:37 +0200 [thread overview]
Message-ID: <46A0F5ED.5010207@trash.net> (raw)
In-Reply-To: <Pine.LNX.4.63.0707201044390.24729@qynat.qvtvafvgr.pbz>
David Lang wrote:
> On Fri, 20 Jul 2007, Thomas Jacob wrote:
>
>> On Thu, Jul 19, 2007 at 05:13:11PM -0700, David Lang wrote:
>> [..]
>>
>>>> Is this still true? What is the reason for this? And: Does
>>>> any odd hashtable size work as well as other odd hash tables sizes
>>>> in the same order of magnitude?
>>>
>>>
>>> changing conntrack_max is not chaning the hash bucket count, that change
>>> can only be done in the code or as a module parameter at module load
>>> time.
>>
>>
>> Sure, I meant odd hash bucket counts of course, so is this
>> FAQ still accurate?
>
>
> as far as I know.
None of this is :) hash_buckets can be changed at runtime through the
sysfs module parameter and the size can be chosen arbitary, in fact
the current -git tree will round it up to the next multiple of
PAGE_SIZE / (sizeof(struct hlist_head)) to avoid memory wastage.
next prev parent reply other threads:[~2007-07-20 17:50 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-19 22:17 need advice for high traffic network Konstantin Svist
2007-07-19 22:17 ` David Lang
2007-07-19 22:40 ` Konstantin Svist
2007-07-19 22:59 ` Thomas Jacob
2007-07-19 23:17 ` Konstantin Svist
2007-07-19 23:28 ` Thomas Jacob
2007-07-19 23:35 ` Konstantin Svist
2007-07-19 23:44 ` Thomas Jacob
2007-07-20 0:18 ` Konstantin Svist
2007-07-20 7:48 ` Thomas Jacob
2007-07-20 17:51 ` David Lang
2007-07-20 23:14 ` Thomas Jacob
2007-07-19 23:47 ` even hash tables sizes, FAQ entry Thomas Jacob
2007-07-20 0:13 ` David Lang
2007-07-20 7:41 ` Thomas Jacob
2007-07-20 17:44 ` David Lang
2007-07-20 17:50 ` Patrick McHardy [this message]
2007-07-20 18:08 ` David Lang
2007-07-21 3:44 ` Patrick McHardy
2007-08-06 18:50 ` need advice for high traffic network R. DuFresne
2007-07-19 22:49 ` Thomas Jacob
2007-07-19 22:53 ` Konstantin Svist
2007-07-19 23:16 ` David Lang
2007-07-20 14:16 ` Gregory Carter
[not found] <200707202319.l6KNJMwx014487@mail3.jubileegroup.co.uk>
2007-07-21 6:41 ` even hash tables sizes, FAQ entry G.W. Haywood
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