I have an S2466 with an integrated 3COM 3C905C ethernet controller.
What I've noticed when streaming tons of data accross my internal LAN
is that the ethernet driver appears to be sucking up tons of cycles.
A quick investigation of /proc/interrupts shows-
0: 195949 192414 IO-APIC-edge timer
1: 5126 5129 IO-APIC-edge keyboard
2: 0 0 XT-PIC cascade
5: 0 0 IO-APIC-level usb-ohci
8: 1 0 IO-APIC-edge rtc
9: 4248819 4245969 IO-APIC-level eth0
10: 144865 145243 IO-APIC-level usb-ohci, nvidia, EMU10K1
12: 48546 48865 IO-APIC-edge PS/2 Mouse
14: 122395 121652 IO-APIC-edge ide0
15: 26286 26498 IO-APIC-edge ide1
NMI: 0 0
LOC: 388204 388212
ERR: 0
MIS: 4
So, approximately 8.5 million ethernet interrupts. The system is
noticably slower when streaming ethernet data, and it's sucking up a
lot more processing time than on my other much slower other box.
This box is running a stock 2.4.18 kernel from kernel.org (i.e. no
custom hacks). It's running 2 1800+ XPs.
I'm wondering if anyone has seen this and has a quick solution. If
not I'll take a look through the 3com code when I get back from
vacation next Sunday. (Leaving in a few hours)
Thanks,
Shane Nay.
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This archive was generated by hypermail 2b29 : Sat Mar 23 2002 - 22:00:29 EST