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    SubjectRe: [patch] Re: setitimer lowlatency-2.2.13-A1 questions
    On Tue, 7 Dec 1999, William Montgomery wrote:

    >This allows me to see the irqdis_nobh in my ktrace, however, I never
    >do see it. [..]

    That's fine because you must not see it. If you see it it means it should
    BUG() or you won't be able to achieve the best latency.

    >The following ktrace shows the timer_bh is still not being run
    >when it should. Any ideas?
    >
    >22161.62 5.79 timer_interrupt pid(220)
    >22167.41 0.82 do_timer pid(220)
    >22168.23 0.80 enable_8259A_irq pid(220)
    >22169.04 0.14 do_IRQ pid(220)
    >22169.17 0.16 do_bottom_half pid(220)
    >22169.33 1.81 do_IRQ pid(220)
    >22171.14 0.44 del_timer pid(220)
    >22171.58 0.18 __kfree_skb pid(220)
    >22171.76 0.26 sock_rfree pid(220)
    >22172.03 0.16 kfree_skbmem pid(220)
    >22172.19 0.44 kfree pid(220)
    >22172.64 1.01 kmem_cache_free pid(220)
    >22173.65 2243.54 do_IRQ pid(220)
    >24417.19 0.44 system_call pid(220)
    >24417.63 0.46 sys_sigsuspend pid(220)
    >24418.09 0.66 schedule pid(220)
    >24418.75 0.53 do_bottom_half pid(220)
    >24419.27 0.77 timer_bh pid(220)

    Could you provide also a plain `ktrace -m System.map -s ???`? The hex
    addresses (not only the resolved symbols) and CPU information are very
    interesting.

    Thanks.

    Andrea


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