Re: Performance comparision / qdisc / no qdisc / queueing linux kernel 4.12

2017-08-12 Thread Tom Herbert
On Fri, Aug 11, 2017 at 4:16 PM, Stephen Hemminger wrote: > Any of the current qdisc that do rate control are single threaded. > Since bandwidth is a shared resource, the qdisc has to acquire a lock > and update cache shared data structures. > > Don't expect HTB or

Re: Performance comparision / qdisc / no qdisc / queueing linux kernel 4.12

2017-08-11 Thread Stephen Hemminger
Any of the current qdisc that do rate control are single threaded. Since bandwidth is a shared resource, the qdisc has to acquire a lock and update cache shared data structures. Don't expect HTB or HFSC to be free. > > 4.13-rc3 have kernel panic when deleting qdisc - will try to get panic trace

Re: Performance comparision / qdisc / no qdisc / queueing linux kernel 4.12

2017-08-05 Thread Paweł Staszewski
With 4.13-rc3 have kernel panic when deleting qdisc - will try to get panic trace W dniu 2017-08-05 o 18:38, Paweł Staszewski pisze: Hi Want to send some comparisions about poor performance of kernel when simple queueing is enabled So first - kernel performance for forwarded udp packets

Performance comparision / qdisc / no qdisc / queueing linux kernel 4.12

2017-08-05 Thread Paweł Staszewski
Hi Want to send some comparisions about poor performance of kernel when simple queueing is enabled So first - kernel performance for forwarded udp packets generated from pktgen: UDP stream ~10Mpps - random destination from network 172.16.0.0/12 + random udp port Forwarding