Date: Sat, 29 Sep 2007 11:16:18 -0700 From: Jos Backus <jos@catnook.com> To: Pyun YongHyeon <pyunyh@gmail.com> Cc: FreeBSD Stable <freebsd-stable@freebsd.org>, freebsd-hardware@freebsd.org Subject: Re: nfe driver 6.2 stable Message-ID: <20070929181618.GA30333@lizzy.catnook.local> In-Reply-To: <20070929050240.GC11457@cdnetworks.co.kr> References: <3aaaa3a0709231657r3264c873ife71800731608b03@mail.gmail.com> <20070924020116.GA36909@eos.sc1.parodius.com> <3aaaa3a0709240844j2603a050nd09bb5482a0f3c21@mail.gmail.com> <20070927065155.GE3692@cdnetworks.co.kr> <3aaaa3a0709271030k24892099ra3409ce6f5f7020f@mail.gmail.com> <20070928000656.GA7119@cdnetworks.co.kr> <3aaaa3a0709281105g1503fdbcu70910de6eae060a0@mail.gmail.com> <20070929012801.GA11457@cdnetworks.co.kr> <20070929022147.GA27590@lizzy.catnook.local> <20070929050240.GC11457@cdnetworks.co.kr>
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On Sat, Sep 29, 2007 at 02:02:40PM +0900, Pyun YongHyeon wrote:
> On Fri, Sep 28, 2007 at 07:21:47PM -0700, Jos Backus wrote:
> > On Sat, Sep 29, 2007 at 10:28:01AM +0900, Pyun YongHyeon wrote:
> > [snip]
> > > ATM nfe(4)'s interrupt moderation mechanism doesn't seem to work
> > > at all so nfe(4) generates too many interrupts. However I don't
> > > think it wouldn't be major bottleneck of the performance.
> >
> > Could this be why (on -current) I had to enable polling on nfe0 to get rid of
> > the choppy audio playback I was experiencing?
> >
>
> Probably not. Maybe nfe(4) use shared interrupt.
> Check the output of "vmstat -i".
pcm0 and nfe0 share irq23:
lizzy:~% vmstat -i
interrupt total rate
irq1: atkbd0 107296 0
irq6: fdc0 1 0
irq12: psm0 563936 1
irq22: atapci2 5293281 11
irq23: pcm0 nfe0 1225731 2
cpu0: timer 947413237 2000
Total 954603482 2015
lizzy:~%
Both pcm0 and nfe0 are mobo devices. Is there any way to change the assigned
interrupts?
--
Jos Backus
jos at catnook.com
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