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    SubjectRe: [patch] voluntary-preempt- : a few submillisecond latencies

    here are a few submillisecond latencies.

    First, the lspci of the machine (which is different from the one I just posted

    First, the 3c59x Ethernet card seems to cause 450us latencies :

    Then the e1000 driver seems to cause 200us latencies :

    Since the other machine with an Intel e1000 controller, shows a twice smaller
    latency, I post its lpsci entry for the controller (note that latency is twice
    smaller) :
    02:0a.0 Ethernet controller: Intel Corp. 82541EI Gigabit Ethernet Controller
    Subsystem: Intel Corp.: Unknown device 1213
    Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 22
    Memory at f2000000 (32-bit, non-prefetchable)
    I/O ports at b400 [size=64]
    Capabilities: [dc] Power Management version 2
    Capabilities: [e4] PCI-X non-bridge device.

    and thank you to Ingo for the speedy response to the console issue. I applied
    the patch and the kernel is compiling.

    P.O. Gaillard

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      Last update: 2005-03-22 14:05    [W:0.020 / U:34.052 seconds]
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