Re: [PATCH] Increase the tx queue to 512 descriptors to fix performance problem.

2008-01-09 Thread Anthony Liguori
Dor Laor wrote: On Wed, 2008-01-09 at 08:29 -0600, Anthony Liguori wrote: Dor Laor wrote: Now that we have a host timer based tx wakeup it waits for 64 packets or timeout before processing them. This might cause the guest to run out of tx buffers while the host holds them up. There's a prop

Re: [PATCH] Increase the tx queue to 512 descriptors to fix performance problem.

2008-01-09 Thread Dor Laor
On Wed, 2008-01-09 at 08:29 -0600, Anthony Liguori wrote: > Dor Laor wrote: > > Now that we have a host timer based tx wakeup it waits for 64 > > packets or timeout before processing them. > > This might cause the guest to run out of tx buffers while the host > > holds them up. > > > > There's

Re: [PATCH] Increase the tx queue to 512 descriptors to fix performance problem.

2008-01-09 Thread Anthony Liguori
Dor Laor wrote: Now that we have a host timer based tx wakeup it waits for 64 packets or timeout before processing them. This might cause the guest to run out of tx buffers while the host holds them up. There's a proper fix that Rusty added last night. This is a temporal solution to quickl

[PATCH] Increase the tx queue to 512 descriptors to fix performance problem.

2008-01-09 Thread Dor Laor
Now that we have a host timer based tx wakeup it waits for 64 packets or timeout before processing them. This might cause the guest to run out of tx buffers while the host holds them up. This is a temporal solution to quickly bring back performance to 800mbps. But a better fix will soon be sent (i