From: Ben Greear <greearb@candelatech.com>
To: NetDev <netdev@vger.kernel.org>
Subject: Takes > 1 second to delete macvlan with global IPv6 address on it.
Date: Mon, 08 Nov 2010 16:20:22 -0800 [thread overview]
Message-ID: <4CD893C6.2030803@candelatech.com> (raw)
This is on an otherwise lightly loaded 2.6.36 + hacks system, 12 physical interfaces,
and two VETH interfaces.
It's much faster to delete an interface when it has no IPv6 address:
[root@ct503-60 lanforge]# time ip link add link eth5 up name eth5#0 address 00:00:00:00:00:01 type macvlan
real 0m0.005s
user 0m0.001s
sys 0m0.004s
[root@ct503-60 lanforge]# time ip link delete eth5#0
real 0m0.033s
user 0m0.001s
sys 0m0.005s
[root@ct503-60 lanforge]# ip link add link eth5 up name eth5#0 address 00:00:00:00:00:01 type macvlan
[root@ct503-60 lanforge]# ip -6 addr add 2002::1/64 dev eth5#0
[root@ct503-60 lanforge]# time ip link delete eth5#0
real 0m1.030s
user 0m0.000s
sys 0m0.013s
Funny enough, if you explicitly remove the IPv6 addr first it seems
to run at normal speed (adding both operation's times together)
[root@ct503-60 lanforge]# ip link add link eth5 up name eth5#0 address 00:00:00:00:00:01 type macvlan
[root@ct503-60 lanforge]# ip -6 addr add 2002::1/64 dev eth5#0
[root@ct503-60 lanforge]# time ip -6 addr delete 2002::1/64 dev eth5#0
real 0m0.001s
user 0m0.000s
sys 0m0.001s
[root@ct503-60 lanforge]# time ip link delete eth5#0
real 0m0.028s
user 0m0.001s
sys 0m0.005s
Take it easy,
Ben
--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
next reply other threads:[~2010-11-09 0:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-09 0:20 Ben Greear [this message]
2010-11-09 6:15 ` Takes > 1 second to delete macvlan with global IPv6 address on it Eric Dumazet
2010-11-09 19:37 ` [PATCH] net/dst: dst_dev_event() called after other notifiers Eric Dumazet
2010-11-09 19:48 ` David Miller
2010-11-09 20:11 ` Ben Greear
2010-11-10 5:57 ` Eric Dumazet
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4CD893C6.2030803@candelatech.com \
--to=greearb@candelatech.com \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.