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    SubjectRe: mmap over nfs leads to excessive system load
    --- Trond Myklebust <trond.myklebust@fys.uio.no> wrote:
    > OK, please back out the patch that I sent you, and try this one instead.

    With jumbo frames, the profile is even happier:
    (throughput is a little higher and CPU usage is a little lower too)

    samples % symbol name
    74463 12.1129 skb_copy_bits
    30351 4.9372 __lookup_tag
    24520 3.9887 _spin_lock
    20353 3.3108 _spin_lock_irqsave
    19306 3.1405 __copy_from_user_ll
    15393 2.5040 __copy_user_zeroing_intel
    10014 1.6290 isolate_lru_pages
    9002 1.4644 sub_preempt_count
    7997 1.3009 debug_smp_processor_id
    7691 1.2511 schedule
    6999 1.1385 shrink_list
    6699 1.0897 tcp_sendmsg
    6669 1.0848 radix_tree_delete
    6532 1.0626 _write_lock_irqsave
    6413 1.0432 __mod_page_state
    6170 1.0037 acpi_safe_halt

    Again... this is excellent.
    So will this make 2.6.16? or can this be called a bug fix for 2.6.15?

    -Kenny




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