On Oct 02, 2001 19:03 +0200, Robert Olsson wrote:
> Jamal mentioned some about the polling efforts for Linux. I can give some
> experimental data here with GIGE. Motivation, implantation etc is in paper
> to presented at USENIX Oakland.
How do you determine the polling rate? I take it that this is a different
patch than Ingo's?
> Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flags
> eth0 1500 0 4031309 7803725 7803725 5968699 22 0 0 0 BRU
> eth1 1500 0 18 0 0 0 4031305 0 0 0 BRU
>
> The RX-ERR, RX-DRP are bugs from the e1000 driver. Anyway we getting 40% of
> packet storm routed. With a estimated throughput is about 350.000 p/s
Are you sure they are "bugs" and not dropped packets? It seems to me that
RX-ERR == RX-DRP, which would seem to me that the receive buffers are full
on the card and are not being emptied quickly enough (or maybe that is
indicated by RX-OVR...) I don't know whether it is _possible_ to empty
the buffers quickly enough, I suppose CPU usage info would also shed some
light on that.
Cheers, Andreas
--
Andreas Dilger \ "If a man ate a pound of pasta and a pound of antipasto,
\ would they cancel out, leaving him still hungry?"
http://www-mddsp.enel.ucalgary.ca/People/adilger/ -- Dogbert
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This archive was generated by hypermail 2b29 : Sun Oct 07 2001 - 21:00:23 EST