From: Evgeniy Polyakov <zbr@ioremap.net>
To: Jamie Lokier <jamie@shareable.org>
Cc: jamal <hadi@cyberus.ca>, Eric Paris <eparis@redhat.com>,
David Miller <davem@davemloft.net>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
netdev@vger.kernel.org, viro@zeniv.linux.org.uk,
alan@linux.intel.com, hch@infradead.org, balbir@in.ibm.com
Subject: Re: [PATCH 1/8] networking/fanotify: declare fanotify socket numbers
Date: Sat, 12 Sep 2009 13:47:27 +0400 [thread overview]
Message-ID: <20090912094727.GC24709@ioremap.net> (raw)
In-Reply-To: <20090911214254.GB19901@shareable.org>
On Fri, Sep 11, 2009 at 10:42:54PM +0100, Jamie Lokier (jamie@shareable.org) wrote:
> While skbs and netlink aren't that slow, I suspect they're an order of
> magnitude or two slower than, say, epoll or inotify at passing events
> around.
Skbs are those tiny bits which allow 100 Gbit/s forwarding between multiple
interfaces. But of course it can not be as fast as plain memory copy :)
Having one skb allocation per IO syscall will be challenging but after
all we have this for send/recv calls and achieve high performance
numbers. Idea with merging events in the same skb will be also very non-trivial.
--
Evgeniy Polyakov
prev parent reply other threads:[~2009-09-12 9:47 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-11 5:25 [PATCH 1/8] networking/fanotify: declare fanotify socket numbers Eric Paris
2009-09-11 5:26 ` [PATCH 2/8] vfs: introduce FMODE_NONOTIFY Eric Paris
2009-09-11 5:26 ` [PATCH 3/8] fanotify: fscking all notification system Eric Paris
2009-09-11 5:26 ` [PATCH 4/8] fanotify:drop notification if they exist in the outgoing queue Eric Paris
2009-09-11 5:26 ` [PATCH 5/8] fanotify: merge notification events with different masks Eric Paris
2009-09-11 5:26 ` [PATCH 6/8] fanotify: userspace socket Eric Paris
2009-09-11 5:26 ` [PATCH 7/8] fanotify: userspace can add and remove fsnotify inode marks Eric Paris
2009-09-11 5:26 ` [PATCH 8/8] fanotify: send events to userspace over socket reads Eric Paris
2009-09-11 14:08 ` Daniel Walker
2009-09-11 14:15 ` Eric Paris
2009-09-11 14:22 ` Daniel Walker
2009-09-11 14:32 ` Daniel Walker
2009-09-11 14:32 ` [PATCH 1/8] networking/fanotify: declare fanotify socket numbers Andreas Gruenbacher
2009-09-11 16:04 ` Eric Paris
2009-09-11 18:46 ` David Miller
2009-09-11 19:33 ` Eric Paris
2009-09-11 20:46 ` Jamie Lokier
2009-09-11 21:13 ` Eric Paris
2009-09-11 21:27 ` Jamie Lokier
2009-09-11 21:51 ` Eric Paris
2009-09-12 9:41 ` Evgeniy Polyakov
2009-09-14 0:17 ` Jamie Lokier
2009-09-14 14:07 ` Evgeniy Polyakov
2009-09-14 19:08 ` fanotify as syscalls Eric Paris
2009-09-15 20:16 ` Evgeniy Polyakov
2009-09-15 21:54 ` Eric Paris
2009-09-15 23:49 ` Linus Torvalds
2009-09-16 1:26 ` Eric Paris
2009-09-16 7:52 ` Jamie Lokier
2009-09-16 9:48 ` Eric Paris
2009-09-16 12:17 ` Jamie Lokier
2009-09-17 20:07 ` Andreas Gruenbacher
2009-09-18 20:52 ` Eric Paris
2009-09-18 22:00 ` Andreas Gruenbacher
2009-09-19 3:04 ` Eric Paris
2009-09-21 20:04 ` Andreas Gruenbacher
2009-09-21 20:28 ` Jamie Lokier
2009-09-21 21:27 ` Andreas Gruenbacher
2009-09-21 22:00 ` Jamie Lokier
2009-09-21 23:09 ` Andreas Gruenbacher
2009-09-21 23:56 ` Jamie Lokier
2009-09-21 22:18 ` Davide Libenzi
2009-09-21 23:12 ` Jamie Lokier
2009-09-22 14:51 ` Davide Libenzi
2009-09-22 15:31 ` Andreas Gruenbacher
2009-09-22 16:04 ` Davide Libenzi
2009-09-23 8:39 ` Tvrtko Ursulin
2009-09-23 11:20 ` hch
2009-09-23 15:35 ` Davide Libenzi
2009-09-23 21:58 ` hch
2009-09-23 11:32 ` Arjan van de Ven
2009-09-23 15:42 ` Tvrtko Ursulin
2009-09-23 15:51 ` Eric Paris
2009-09-23 21:56 ` hch
2009-09-23 15:26 ` Davide Libenzi
2009-09-23 15:45 ` Tvrtko Ursulin
2009-09-23 17:31 ` Davide Libenzi
2009-09-22 16:11 ` Eric Paris
2009-09-22 16:27 ` Jamie Lokier
2009-09-22 23:43 ` Davide Libenzi
2009-09-22 21:06 ` Eric Paris
2009-09-22 21:38 ` Andreas Gruenbacher
2009-09-16 10:41 ` Alan Cox
2009-09-16 11:41 ` Jamie Lokier
2009-09-16 12:01 ` Alan Cox
2009-09-16 12:56 ` Jamie Lokier
2009-09-16 15:53 ` Eric Paris
2009-09-16 21:49 ` Jamie Lokier
2009-09-16 22:33 ` Eric Paris
2009-09-16 11:30 ` Arnd Bergmann
2009-09-16 12:05 ` Evgeniy Polyakov
2009-09-16 12:27 ` Jamie Lokier
2009-09-17 16:40 ` Linus Torvalds
2009-09-17 17:35 ` Arjan van de Ven
2009-09-17 18:53 ` Eric Paris
2009-09-22 0:15 ` Eric W. Biederman
2009-09-22 0:22 ` Randy Dunlap
2009-09-11 21:21 ` [PATCH 1/8] networking/fanotify: declare fanotify socket numbers jamal
2009-09-11 21:42 ` Jamie Lokier
2009-09-11 22:52 ` jamal
2009-09-14 0:03 ` Jamie Lokier
2009-09-14 1:26 ` Eric Paris
2009-09-14 13:15 ` jamal
2009-09-12 9:47 ` Evgeniy Polyakov [this message]
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