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Message-ID: <1364519448.15753.63.camel@edumazet-glaptop>
Date: Thu, 28 Mar 2013 18:10:48 -0700
From: Eric Dumazet <eric.dumazet@...il.com>
To: "Eric W. Biederman" <ebiederm@...ssion.com>
Cc: Stephen Hemminger <stephen@...workplumber.org>,
Benoit Lourdelet <blourdel@...iper.net>,
Serge Hallyn <serge.hallyn@...ntu.com>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [RFC][PATCH] iproute: Faster ip link add, set and delete
On Thu, 2013-03-28 at 17:43 -0700, Eric Dumazet wrote:
> In batch mode, I can create these veth pairs in 4 seconds
>
> for i in $(seq 1 5000) ; do echo link add a$i type veth peer name b$i;
> done | ip -batch -
At rmmod time, 30% of cpu is spent in packet_notifier()
Maybe we can do something about this.
30.85% rmmod [kernel.kallsyms] [k]
packet_notifier
|
--- packet_notifier
notifier_call_chain
raw_notifier_call_chain
call_netdevice_notifiers
rollback_registered_many
unregister_netdevice_many
__rtnl_link_unregister
rtnl_link_unregister
0xffffffffa0044868
sys_delete_module
sysenter_dispatch
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