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    Subject[patch] voluntary-preempt-

    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 for the patch to apply without fuzz

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      Last update: 2005-03-22 14:05    [W:0.051 / U:15.832 seconds]
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