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Re: impressive throughput on 2.5.73

from [Nivedita Singhvi] [Permanent Link][Original]
To: Dave Hansen <haveblue@xxxxxxxxxx>
Subject: Re: impressive throughput on 2.5.73
From: Nivedita Singhvi <niv@xxxxxxxxxx>
Date: Wed, 02 Jul 2003 19:58:41 -0700
Cc: netdev@xxxxxxxxxxx, Scott Feldman <scott.feldman@xxxxxxxxx>
In-reply-to: <1057193766.31286.843.camel@nighthawk>
References: <1057193766.31286.843.camel@nighthawk>
Sender: netdev-bounce@xxxxxxxxxxx
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.2.1) Gecko/20021130 
Dave Hansen wrote:

176 requests/sec - 110.0 MB/second - 0.6 MB/request

Server CPU breakdown.
 2% system
 7% user
91% idle


client profile:
 33363 total                                      0.0196
  9575 poll_idle                                132.9861
  5099 __copy_user_intel                         32.6859
  3307 schedule                                   2.1418
  1753 __wake_up                                 39.8409
   667 tcp_v4_rcv                                 0.3382


Nice numbers :). In addition to NAPI, would be nice to
stick in more adapters. Any idea why __wake_up should be
so expensive on the client side?

thanks,
Nivedita



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