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Date: Mon, 18 May 2009 21:05:41 +0200 From: Jarek Poplawski <jarkao2@...il.com> To: Antonio Almeida <vexwek@...il.com> Cc: Stephen Hemminger <shemminger@...tta.com>, netdev@...r.kernel.org, kaber@...sh.net, davem@...emloft.net, devik@....cz, Eric Dumazet <dada1@...mosbay.com> Subject: Re: [PATCH iproute2] Re: HTB accuracy for high speed On Mon, May 18, 2009 at 07:56:12PM +0100, Antonio Almeida wrote: > Precise measurements: > > 800 bytes: > class htb 1:108 parent 1:10 leaf 108: prio 7 quantum 1514 rate > 555000Kbit ceil 555000Kbit burst 70901b/8 mpu 0b overhead 0b cburst > 70901b/8 mpu 0b overhead 0b level 0 > Sent 46793626324 bytes 57771194 pkt (dropped 29920019, overlimits 0 requeues 0) > rate 621714Kbit 97631pps backlog 0b 126p requeues 0 > lended: 57771068 borrowed: 0 giants: 0 > tokens: -8 ctokens: -8 > > > 850 bytes: > class htb 1:108 parent 1:10 leaf 108: prio 7 quantum 1514 rate > 555000Kbit ceil 555000Kbit burst 70901b/8 mpu 0b overhead 0b cburst > 70901b/8 mpu 0b overhead 0b level 0 > Sent 63422144616 bytes 77714246 pkt (dropped 41012275, overlimits 0 requeues 0) > rate 600699Kbit 88756pps backlog 0b 127p requeues 0 > lended: 77714119 borrowed: 0 giants: 0 > tokens: -11 ctokens: -11 > > > 900 bytes: > class htb 1:108 parent 1:10 leaf 108: prio 7 quantum 1514 rate > 555000Kbit ceil 555000Kbit burst 70901b/8 mpu 0b overhead 0b cburst > 70901b/8 mpu 0b overhead 0b level 0 > Sent 76868403562 bytes 92835297 pkt (dropped 48565133, overlimits 0 requeues 0) > rate 636195Kbit 88755pps backlog 0b 126p requeues 0 > lended: 92835171 borrowed: 0 giants: 0 > tokens: -7 ctokens: -7 > > > If you need more values you're free to ask. Since you're so kind... :-) There is a line in net/sched/sch_htb.c: #define HTB_HYSTERESIS 1 /* whether to use mode hysteresis for speedup */ Could you change 1 to 0, and repeat these tests above after recompiling? More thanks, Jarek P. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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