tcp_output starving -- is due to mbuf get delay?
dgilbert at velocet.ca
Wed Apr 9 21:15:28 PDT 2003
>>>>> "Jin" == Jin Guojun <[DSD]" <j_guojun at lbl.gov>> writes:
Jin> Some details was left behind -- The machine is 2 GHz Intel P4
Jin> with 1 GB memory, so the delay is not from either CPU or lack of
I just want to quickly jump in with the comment that our GigE tests of
routing through FreeBSD have exposed several-order-of-magnitude
differences by changing ram/motherboard/which-slot-the-card-is-in.
Do not assume that a fast CPU is the key. We went through 10
motherboards to commission the current routers ... and sometimes
faster cpus would route slower (in various combinations of
motherboards and RAM).
|David Gilbert, Velocet Communications. | Two things can only be |
|Mail: dgilbert at velocet.net | equal if and only if they |
|http://daveg.ca | are precisely opposite. |
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