From owner-freebsd-net@FreeBSD.ORG Wed Sep 5 07:03:20 2012 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5A74C1065674; Wed, 5 Sep 2012 07:03:20 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-pb0-f54.google.com (mail-pb0-f54.google.com [209.85.160.54]) by mx1.freebsd.org (Postfix) with ESMTP id 2013D8FC1F; Wed, 5 Sep 2012 07:03:19 +0000 (UTC) Received: by pbbrp2 with SMTP id rp2so458472pbb.13 for ; Wed, 05 Sep 2012 00:03:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=N6mFElNuHM12l7a0xRYrxIVYC7LLyqHLuuLKyJrVHFw=; b=RR7zvv+ciQAGajFXjIReVKQUCTVSbbTBrwKEq+CxNVno+WW9R3FQ9Tcx3QtZQ/B6yy 1DZx4jy5pHPCX0t/hENZp0iNWnYE2txCAEhPJgXcNya7t7E1FcuLVol1lYlkwlHUIKeO ZrXQTJwlT1uFbODUY2IqPLRkuNTFT9JkaDVCwA+6PK+nB8pS9+75s3eS5UAkeO+Tb/xx +4vQaCUl0mpK7RrXIWJ1mlS//YSyW0qYDVcdrmZ4YuIJMTYNXOyLChwTdcc4ekm2EJQL 0/CTFA21wK8MPHoz2VFbbLBj4aTk1dJzClGGq5/so1B3NIs3rMsaUOpHvSTdzvcJQGgC fGaw== MIME-Version: 1.0 Received: by 10.66.72.197 with SMTP id f5mr46873729pav.20.1346828599503; Wed, 05 Sep 2012 00:03:19 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.68.36.106 with HTTP; Wed, 5 Sep 2012 00:03:19 -0700 (PDT) In-Reply-To: <5044772C.8090302@rdtc.ru> References: <1865271844.20120829131610@serebryakov.spb.ru> <1807373989.20120829223125@serebryakov.spb.ru> <20120830152726.A33776@sola.nimnet.asn.au> <534292400.20120830131158@serebryakov.spb.ru> <20120831180721.GB3208@michelle.cdnetworks.com> <50404F91.8080302@rdtc.ru> <20120903184049.GB3730@michelle.cdnetworks.com> <50443888.9080400@rdtc.ru> <20120903214333.GC3730@michelle.cdnetworks.com> <5044772C.8090302@rdtc.ru> Date: Wed, 5 Sep 2012 00:03:19 -0700 X-Google-Sender-Auth: 7PuxC-I69qdb21W4pL0JqcaNFv4 Message-ID: From: Adrian Chadd To: Eugene Grosbein Content-Type: text/plain; charset=KOI8-R Content-Transfer-Encoding: quoted-printable Cc: pyunyh@gmail.com, freebsd-net@freebsd.org, Lev Serebryakov , Ian Smith Subject: Re: vr(4) troubles for AMD Geode CS5536 chipset X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 05 Sep 2012 07:03:20 -0000 waaaaaaaaait. Did you say that removing preemption from your kernel fixed your performance issues? If that's the case, we need to figure out why both you and i see that.. Adrian On 3 September 2012 02:23, Eugene Grosbein wrote: > 04.09.2012 04:43, YongHyeon PYUN =D0=C9=DB=C5=D4: > >>> None. I've read its source and learned it prints its debug >>> to the kernel dmesg buffer with sysctl dev.vr.1.stats=3D1 >>> and done that before, during and after noted failure - >>> all counters are zero except of good frames conters (in/out). >> >> Ok, it seems you didn't encounter TX/RX MAC shutdown/restart >> related issues. To get more verbose debugging messages, you have >> to define VR_SHOW_ERRORS in if_vr.c. > > I'll try this evening. > >> BTW, I see really poor bulk TCP performance on vr(4) with CURRENT >> (< 12 Mbps). :-( >> This is a quad-port VT6105 with Core2 Duo E6550. Pre-r235334 >> restores the old good performance for me(> 86Mbps). However I can't >> explain how taskq change shows this huge difference. > > Have you tried to remove options PREEMPTING from the kernel for newest dr= iver? > That helped me a lot - performance of new driver returned to the level of= old one. > > Eugene Grosbein > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"