Re: RFC: possible NAPI improvements to reduce interrupt rates for low traffic rates

2007-09-12 Thread Mandeep Baines
On 9/12/07, Stephen Hemminger <[EMAIL PROTECTED]> wrote: > But if you compare this to non-NAPI driver the same softirq > overhead happens. The problem is that for many older devices disabling IRQ's > require an expensive non-cached PCI access. Smarter, newer devices > all use MSI which is pure edge

Re: [PATCH] [sis900] convert to NAPI, WAS Re: pktgen terminating condition

2007-09-04 Thread Mandeep Baines
Cool. I'll try to see if I can clock my pc lower and run the experiments again. I'll measure cpu utilization also this time around. That should be useful for extrapolating. Regards, Mandeep On 9/4/07, Daniele Venzano <[EMAIL PROTECTED]> wrote: > - Message d'origine - > De: Mandeep Singh B

Re: [PATCH] [sis900] convert to NAPI, WAS Re: pktgen terminating condition

2007-09-04 Thread Mandeep Baines
On 9/4/07, jamal <[EMAIL PROTECTED]> wrote: > On Mon, 2007-03-09 at 20:20 -0700, Mandeep Singh Baines wrote: > > > I didn't see much saving in interrupts on my machine (too fast, I guess). > > You could try the idea suggested by Dave earlier and just turn interupts > for every nth packet. That shou

Re: pktgen terminating condition

2007-08-29 Thread Mandeep Baines
On 8/29/07, jamal <[EMAIL PROTECTED]> wrote: > On Tue, 2007-28-08 at 21:43 -0700, Mandeep Singh Baines wrote: > > > I interpret this to mean that the interrupt gets generates after a packet > > is transferred to the TFIFO on the NIC and the next packet in the ring is > > NULL. > > iow, when tx tran