|| ||Ingo Molnar <email@example.com>|
|| ||[patch] voluntary-preempt-126.96.36.199-P5|
|| ||Fri, 20 Aug 2004 15:30:31 +0200|
|| ||Thomas Charbonnel <firstname.lastname@example.org>,
Florian Schmidt <email@example.com>,
Felipe Alfaro Solana <firstname.lastname@example.org>,
Lee Revell <email@example.com>, Mark_H_Johnson@raytheon.com|
i've uploaded the -P5 patch:
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 188.8.131.52 for the patch to apply without fuzz
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