[Cake] openwrt was changing fq_codel quantum default

Kevin Darbyshire-Bryant kevin at darbyshire-bryant.me.uk
Tue Dec 8 04:59:53 EST 2015

Did anyone else see https://dev.openwrt.org/ticket/21326 and fixing
commit https://dev.openwrt.org/changeset/47811 go through in the early
hours of this morning?


q->quantum = 300;  //was

q->quantum = psched_mtu(qdisc_dev(sch));   //now returned to kernel default

" i ran into cpu limits with sirq on archer c7v2 while testing ingress

it seems to me that quantum < mtu is very costly (at cpu) with higher
(50mbps) bandwidths

    ~40% sirq load with quantum 1522+
    90% at quantum mtu/2"

-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 4816 bytes
Desc: S/MIME Cryptographic Signature
URL: <https://lists.bufferbloat.net/pipermail/cake/attachments/20151208/49e27f0b/attachment-0002.bin>

More information about the Cake mailing list