Date: Fri, 4 May 2012 19:05:05 +0200 (CEST) From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> To: Navdeep Parhar <np@freebsd.org> Cc: freebsd-hackers@freebsd.org Subject: Re: CPU selection for ithreads on 8.3 Message-ID: <alpine.BSF.2.00.1205041903530.9968@wojtek.tensor.gdynia.pl> In-Reply-To: <4FA1A421.6020601@FreeBSD.org> References: <4FA1A421.6020601@FreeBSD.org>
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> cxgbc0}
> 12 root -68 - 0K 816K WAIT 7 0:31 0.00% intr{irq280:
> cxgbc0}
>
> Back in the day there used to be code in cxgb to bind different
> interrupts to different CPUs but it was removed because the kernel
> distributed them across CPUs anyway. So what changed? This appears 8.3
> specific. I don't see it on head and I don't have a 9 system readily
maybe stupid question but isn't it better to execute same fragment of code
repetitively on same CPU core and don't mess with cache trashing?
Of course as long as one core can cope with it.
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