[prev in list] [next in list] [prev in thread] [next in thread]
List: linux-kernel
Subject: [patch] voluntary-preempt-2.6.8.1-P5
From: Ingo Molnar <mingo () elte ! hu>
Date: 2004-08-20 13:30:31
Message-ID: 20040820133031.GA13105 () elte ! hu
[Download RAW message or body]
i've uploaded the -P5 patch:
http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.8.1-P5
Changes since -P4:
- increase PERCPU_ENOUGH_ROOM to avoid percpu overflow on SMP.
(Mark H Johnson)
- reduce ZAP_BLOCK_SIZE to 16 when vp != 0. This pushes the exit
latency down to below 100 usecs on Lee Revell's box.
- added a preempt_count field to /proc/latency_trace. This makes it
easier to spot IRQ contexts and generally it gives a nice overview of
how the preemption depth changes. It should also help us debug
those 900usec weirdnesses related to cpu_idle. (if they still occur)
- made the tcp packet-queue collapsing dependent on VOLUNTARY_PREEMPT.
- fixed 10-20 msec latencies triggered by 'netstat', which occur when
there are lots of sockets on a box.
- rediffed against 2.6.8.1 for the patch to apply without fuzz
Ingo
-
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/
[prev in list] [next in list] [prev in thread] [next in thread]
Configure |
About |
News |
Add a list |
Sponsored by KoreLogic