Messages in this thread |  | | | Date | Sun, 06 Jan 2008 23:10:40 -0800 (PST) | | Subject | Re: regression: sysctl_check changes in 2.6.24 are O(n) resulting in slow creation of 10000 network interfaces | | From | David Miller <> |
From: ebiederm@xmission.com (Eric W. Biederman)
Date: Sun, 06 Jan 2008 23:57:57 -0700
> Why do we need 10000 interfaces? Why isn't network device creation a
> slow path?
Because people create virtual devices like mad.
> 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.
That's why we even bother hashing network devices in the network code.
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