Date: Wed, 21 Oct 2015 11:31:49 -0700 From: John Baldwin <jhb@freebsd.org> To: Maxim Sobolev <sobomax@sippysoft.com> Cc: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: Some MSI are not routed correctly Message-ID: <206504538.Si4KCGV8IQ@ralph.baldwin.cx> In-Reply-To: <CAH7qZfvMZ%2BqChejXZtjNDofehCkDCv7cu8a2Q3PqYUX0Rer3dw@mail.gmail.com> References: <CAH7qZfscsmvU6E5d-VXqN_xz_Bjs7i6K0izd%2Bv8X2nm6Q9s7Aw@mail.gmail.com> <2050066.YiOUntKNB6@ralph.baldwin.cx> <CAH7qZfvMZ%2BqChejXZtjNDofehCkDCv7cu8a2Q3PqYUX0Rer3dw@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wednesday, October 21, 2015 11:29:17 AM Maxim Sobolev wrote:
> Yes, I do. However, please note that for some reason they are not using
> nearly as much CPU time as the other 4 for some reason.
>
> 11 root -92 - 0K 1104K WAIT 3 95.3H 28.96%
> intr{irq267: igb0:que}
> 11 root -92 - 0K 1104K WAIT 1 95.5H 24.41%
> intr{irq265: igb0:que}
> 11 root -92 - 0K 1104K CPU2 2 95.2H 23.73%
> intr{irq266: igb0:que}
> 11 root -92 - 0K 1104K WAIT 0 95.2H 23.05%
> intr{irq264: igb0:que}
> 11 root -92 - 0K 1104K WAIT 6 286:37 1.12%
> intr{irq271: igb1:que}
> 11 root -92 - 0K 1104K WAIT 7 278:05 1.12%
> intr{irq272: igb1:que}
> 11 root -92 - 0K 1104K WAIT 5 284:26 1.07%
> intr{irq270: igb1:que}
> 11 root -92 - 0K 1104K WAIT 4 290:41 0.98%
> intr{irq269: igb1:que}
>
> CPU 0: 0.0% user, 0.0% nice, 0.9% system, 24.9% interrupt, 74.2% idle
> CPU 1: 0.5% user, 0.0% nice, 0.0% system, 26.3% interrupt, 73.2% idle
> CPU 2: 0.0% user, 0.0% nice, 1.4% system, 25.4% interrupt, 73.2% idle
> CPU 3: 0.0% user, 0.0% nice, 0.5% system, 23.9% interrupt, 75.6% idle
> CPU 4: 0.9% user, 0.0% nice, 2.3% system, 2.3% interrupt, 94.4% idle
> CPU 5: 1.4% user, 0.0% nice, 4.2% system, 4.2% interrupt, 90.1% idle
> CPU 6: 1.4% user, 0.0% nice, 3.8% system, 1.4% interrupt, 93.4% idle
> CPU 7: 2.8% user, 0.0% nice, 0.0% system, 3.8% interrupt, 93.4% idle
>
> 34263 igb0:que 0
> 32308 igb0:que 1
> 35022 igb0:que 2
> 34593 igb0:que 3
> 14931 igb1:que 0
> 13059 igb1:que 1
> 12971 igb1:que 2
> 13032 igb1:que 3
>
> So I guess interrupts are routed correctly after all, but for some reason
> driver takes some 5 times less time to process it on cpus 4-7
> (per-interrupt). Weird.
Are the pps rates the same? It seems like the interrupt rates on igb0
are double those of igb1?
--
John Baldwin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?206504538.Si4KCGV8IQ>