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    SubjectRe: NFS client latencies

    * Ingo Molnar <mingo@elte.hu> wrote:

    > could you check the -41-23 -RT kernel at the usual place:
    >
    > http://redhat.com/~mingo/realtime-preempt/
    >
    > i've added Trond's radix lookup code, plus the lockbreaker patch.
    >
    > (one thing that is not covered yet is nfs_scan_list() - that still scans
    > a list. Trond, is that fixable too?)

    ok, find a new latency trace attached (1.6 msecs). I generated write
    loads, and the nfs_scan_list_dirty() latency is gone and indeed
    nfs_scan_list() generates the worst latency - while processing 8535
    pages in one critical section.

    Ingo
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