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Andrew Morton a écrit : > Eric Dumazet <dada1@cosmosbay.com> wrote: > >> Please (re)consider this patch since it really reduce CPU load and/or memory >> bus trafic between CPUS. > > > Did you actually measure this? If so, you should publish the results. > > Hi Andrew Well yes I did. Here is part of the mail sent on netdev one month ago : Hi David I played and I have very good results with the following patches. # tc -s -d qdisc show dev eth0 ; sleep 10 ; tc -s -d qdisc show dev eth0 qdisc pfifo_fast 0: bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 Sent 440173135511 bytes 3211378293 pkt (dropped 240817, overlimits 0 requeues 27028035) backlog 0b 0p requeues 27028035 qdisc pfifo_fast 0: bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 Sent 440216655667 bytes 3211730812 pkt (dropped 240904, overlimits 0 requeues 27031668) backlog 0b 0p requeues 27031668 (So about 360 requeues per second, much better than before (12000 / second)) oprofile results give 0.6257 % qdisc_restart (instead of 2.6452 %) thread is archived here : http://marc.theaimsgroup.com/?l=linux-netdev&m=112521684415443&w=2 Thank you Eric - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||
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