From: Hans Henrik Happe <hhh@imada.sdu.dk>
To: netdev@vger.kernel.org
Subject: Re: Netchannels: netchannel vs. socket. 2:0.
Date: Fri, 9 Jun 2006 01:00:24 +0200 [thread overview]
Message-ID: <200606090100.24827.hhh@imada.sdu.dk> (raw)
In-Reply-To: <20060608171555.GA10273@2ka.mipt.ru>
On Thursday 08 June 2006 19:15, you wrote:
> After some enhancements made for netchannel subsystem I'm pleased to
> announce, that netchannel subsystem outperforms existing layered design
> both in CPU usage and network speed.
>
> Well, after such pretentious introduction I want to cool things down.
> CPU usage is about 1-2% less for netchannels and network performance is
> about 1-2 MB higher and sometimes exceeds 84 MB/sec which, I think,
> is maximum for given network setup (e1000 receive, r8169 send, 1500 MTU).
I have followed your work closely and have wondered how it affects latency?
I have somewhat limited knowledge about TCP and how the kernel handles it, but
I guess the path from NIC to userspace hasn't increased. What about syscall
overhead caused by userspace TCP processing?
H³
next prev parent reply other threads:[~2006-06-08 23:00 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-08 17:15 Netchannels: netchannel vs. socket. 2:0 Evgeniy Polyakov
2006-06-08 17:40 ` Evgeniy Polyakov
2006-06-08 23:00 ` Hans Henrik Happe [this message]
2006-06-09 5:09 ` Evgeniy Polyakov
2006-06-13 17:33 ` Netchannels: alternative TCP/IP stack? Evgeniy Polyakov
2006-06-29 9:38 ` Netchannels: progress report Evgeniy Polyakov
2006-06-29 17:19 ` James Morris
2006-06-29 18:15 ` Evgeniy Polyakov
2006-07-10 13:23 ` Netchannels: progress report. Sending benchmark Evgeniy Polyakov
2006-07-10 13:32 ` Evgeniy Polyakov
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