lkml.org 
[lkml]   [2002]   [Jan]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: TCP/IP Speed
Zwane Mwaikambo wrote:

>On Wed, 30 Jan 2002, Richard B. Johnson wrote:
>
>>But it's already connected.
>>
>>
>> host:
>> for (;;) {
>> gettimeofday(...);
>> write(s, buf, 64);
>> read(s, buf, sizeof(buffer));
>> gettimeofday(...);
>> /* delay is 1.0 ms */
>> }
>> server is IPPORT_ECHO
>>
>
>You didn't make that explicit in your previous email, and anyway what kind
>of resolution can you expect from gettimeofday...
>
Depending on the processor, gettimeofday has very high resolution.

If I remember correctly, the TCP stacks put in delays for small sends so
they can pack multiple things together. I think there are ways to work
around this via some type of flush, but memory fails me on exactly how.

-Corey

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:18    [W:0.775 / U:0.212 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site