From: Andi Kleen <andi@firstfloor.org>
To: David Miller <davem@davemloft.net>
Cc: ebiederm@xmission.com, bcrl@kvack.org,
linux-kernel@vger.kernel.org, torvalds@linux-foundation.org
Subject: Re: regression: sysctl_check changes in 2.6.24 are O(n) resulting in slow creation of 10000 network interfaces
Date: Mon, 07 Jan 2008 21:45:02 +0100 [thread overview]
Message-ID: <p73wsqlqsa9.fsf@bingen.suse.de> (raw)
In-Reply-To: <20080106.231040.222338659.davem@davemloft.net> (David Miller's message of "Sun\, 06 Jan 2008 23\:10\:40 -0800 \(PST\)")
David Miller <davem@davemloft.net> writes:
>
>> So is this a bug report telling me that there are users with
>> 10k or 100k interfaces that care. So we need to fix sysctl.
>
> Unquestionably, we do, it's a major regression.
>
> People create thousands of VLAN devices, as one of many examples, all
> the time.
It might be an reasonable option to just stop creating sysctl entries
for interfaces after some threshold. I presume people who have that
many interfaces will mostly work through {default,all}/* anyways.
I think that would be a better option than to complicate sysctl.c
for this uncommon case.
-Andi
next prev parent reply other threads:[~2008-01-07 20:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-06 22:03 regression: sysctl_check changes in 2.6.24 are O(n) resulting in slow creation of 10000 network interfaces Benjamin LaHaise
2008-01-07 6:57 ` Eric W. Biederman
2008-01-07 7:10 ` David Miller
2008-01-07 10:25 ` Eric W. Biederman
2008-01-08 1:47 ` Benjamin LaHaise
2008-01-07 20:45 ` Andi Kleen [this message]
2008-01-07 21:30 ` Alan Cox
2008-01-07 22:57 ` Andi Kleen
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