Date: Sun, 21 Sep 2014 12:39:07 +0800 From: Ganbold Tsagaankhuu <ganbold@gmail.com> To: Dmitry Marakasov <amdmi3@amdmi3.ru> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: FreeBSD-11.0-CURRENT on ARM: performance and load average Message-ID: <CAGtf9xNh1sWw2d7Jd1hN5R%2BML1WdfEpEYZZQc7eRG=2spWUC=A@mail.gmail.com> In-Reply-To: <20140921023708.GA29778@hades.panopticon> References: <7351653.A2UeEk9AA3@quad> <20140921023708.GA29778@hades.panopticon>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sun, Sep 21, 2014 at 10:37 AM, Dmitry Marakasov <amdmi3@amdmi3.ru> wrote: > * Maxim V FIlimonov (che@bein.link) wrote: > > > Recently, I encountered a problem with -CURRENT on an ARM board > (cubieboard2 > > to be precise). The problem was that the load average was above 2. > Including > > the fact that the board has 2 CPU cores, that's strange. Also, the > network > > throughput was way too slow: from 3 kilobytes per second earlier to > 20..50 > > about now. > > > > Here's a workaround for that: > > > sysctl kern.eventtimer.periodic=1 > > With that, the network performance increased while LA decreased to a > decent > > 0.3..0.5. > > I'm just started to experiment with cubieboard (1) as well. > > I've also noticed poor network performance at first, however later > (without any tuning) it gave out 111 kBps. kern.eventtimer.periodic > doesn't seem to affect it. > As for EMAC driver, RX performance is poor right now. Please see some info at: http://linux-sunxi.org/Ethernet#EMAC It needs improvement with the assistance of external DMA controller (dma driver) in case there is bulk TCP receiver. Ganbold > > I've also played with clocks a bit, and was able to increase CPU > rate 3x by configuring PLL1. I've experienced some instability later > (board doesn't always boot from USB, perl build fails), and now I'm > checking if reclocking was the cause. > > -- > Dmitry Marakasov . 55B5 0596 FF1E 8D84 5F56 9510 D35A 80DD F9D2 F77D > amdmi3@amdmi3.ru ..: jabber: amdmi3@jabber.ru http://www.amdmi3.ru > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAGtf9xNh1sWw2d7Jd1hN5R%2BML1WdfEpEYZZQc7eRG=2spWUC=A>