Re: Network performance with small packets

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, 2011-02-01 at 23:24 +0200, Michael S. Tsirkin wrote:
> My theory is that the issue is not signalling.
> Rather, our queue fills up, then host handles
> one packet and sends an interrupt, and we
> immediately wake the queue. So the vq
> once it gets full, stays full.

>From the printk debugging output, it might not be exactly the case. The
ring gets full, run a bit, then gets full, then run a bit, then full...

> If you try my patch with bufs threshold set to e.g.
> half the vq, what we will do is send interrupt after we have processed
> half the vq.  So host has half the vq to go, and guest has half the vq
> to fill.
> 
> See?

I am cleaning up my set up to run your patch ...

Shirley


--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux