Re: [Xen-devel] "tcp: refine TSO autosizing" causes performance regression on Xen

2015-04-15 Thread Rick Jones
On 04/15/2015 11:32 AM, Eric Dumazet wrote: On Wed, 2015-04-15 at 11:19 -0700, Rick Jones wrote: 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? Keep in mind some VM use

Re: [Xen-devel] "tcp: refine TSO autosizing" causes performance regression on Xen

2015-04-15 Thread Rick Jones
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

Re: [Xen-devel] "tcp: refine TSO autosizing" causes performance regression on Xen

2015-04-15 Thread Rick Jones
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? rick ___ Xen-devel mailing list Xen-devel@lists