Messages in this thread | | | Date | Wed, 15 Apr 2015 11:19:15 -0700 | From | Rick Jones <> | Subject | Re: [Xen-devel] "tcp: refine TSO autosizing" causes performance regression on Xen |
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On 04/15/2015 11:08 AM, Eric Dumazet wrote: > On Wed, 2015-04-15 at 10:55 -0700, Rick Jones wrote: >>> >>> Have you tested this patch on a NIC without GSO/TSO ? >>> >>> This would allow more than 500 packets for a single flow. >>> >>> Hello bufferbloat. >> >> Woudln't the fq_codel qdisc on that interface address that problem? > > Last time I checked, default qdisc was pfifo_fast.
Bummer.
> These guys do not want to change a sysctl, how pfifo_fast will magically > becomes fq_codel ?
Well, I'm not sure that it is George and Jonathan themselves who don't want to change a sysctl, but the customers who would have to tweak that in their VMs?
rick
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