lkml.org 
[lkml]   [2001]   [Jan]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectSCHED_FIFO/SCHED_RR in 2.4 vs 2.2
Date
From
I have a server program that communicates with a number of client
programs via TCP sockets. I have tried to measure the response time
of the server program by using a program similar to tcpdump (that
uses a packet socket).

However, when I run the server program on 2.4.0 within a
SCHED_FIFO or SCHED_RR scheduling class (instead of SCHED_OTHER)
the average response time gets better (and is more predictable)
but I occasionally get delays that seems to be multiples of 2
seconds, in the range of 2 to 26 seconds. I don't get this
behavior with 2.2.18.

Does anybody have some idea why I get this strange behavior on 2.4.0?

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

\
 
 \ /
  Last update: 2005-03-22 13:24    [W:0.019 / U:0.088 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site