Re: [patch] voluntary-preempt-2.6.9-rc2-mm3-S5
From: K.R. Foley
Date: Thu Sep 23 2004 - 22:40:06 EST
K.R. Foley wrote:
Ingo Molnar wrote:
i've released the -S5 VP patch:
http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc2-mm3-S5
This one seems to bring back some issues with the network interface. The
only noticeable symptom is dropping ~30 percent of new telnet
connections under heavy load. When not loaded it still drops ~5 percent.
I had no dropped connections with S4 even when loaded. This just happens
to be one of things that I have been testing manually since I noticed
some problems with previous patches.
Currently using an SMC card with a DEC 21140 chip and the tulip driver
on my SMP system.
kr
The following, on top of Ingo's patch above, fixes the problem with
dropping new connections and doesn't have any adverse affects that I've
seen:
--- linux-2.6.9-rc2-pre-mm3/net/ipv4/tcp_output.c.orig 2004-09-23
22:16:42.249435870 -0500
+++ linux-2.6.9-rc2-pre-mm3/net/ipv4/tcp_output.c 2004-09-23
22:12:03.911811945 -0500
@@ -699,11 +699,6 @@
tcp_minshall_update(tp, mss_now, skb);
sent_pkts = 1;
- /*
- * Break out early - we'll continue later:
- */
- if (softirq_need_resched())
- break;
}
if (sent_pkts) {
-
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