From owner-freebsd-stable@FreeBSD.ORG Fri Aug 30 06:46:30 2013 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 497199AB; Fri, 30 Aug 2013 06:46:30 +0000 (UTC) (envelope-from mvharding@gmail.com) Received: from mail-we0-x234.google.com (mail-we0-x234.google.com [IPv6:2a00:1450:400c:c03::234]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id AD36229F1; Fri, 30 Aug 2013 06:46:29 +0000 (UTC) Received: by mail-we0-f180.google.com with SMTP id q58so1222057wes.39 for ; Thu, 29 Aug 2013 23:46:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=JlfXvolm9BMvj/SY4ArLBJUy6qHxBXeKCeVPHiWdntA=; b=gt4eTnFZPU39895nqHglytOQr6/MzDGXD2pYnl68Ru0MnuVHHL+slORHARTJ9dKOcv odaIf/aUBQluHhpiXEadfT2fOy5BPigo5I2uWRwF/7bvrhOaspXoiZ7V/0+ENaPxCim5 mYwsIH8tItdIXx6cca2jDY+e6wi1M8T96Qs3UStLUSI0KLtoTgS6C58bBrSKd/CK/6gU PPtguv8bLl1R3OYj33w3obKtRYFQ0YDDcU5wbFbtSORp2C0DwNVKWGtFKTLecgGQhoq6 93kiVDuWGGEUQPyJbF+p+5uNnhrEPcZQfdanY0+THXeBUkGdAisPAYmh6WKex9yu0wz2 64TQ== MIME-Version: 1.0 X-Received: by 10.180.75.15 with SMTP id y15mr1100988wiv.12.1377845188019; Thu, 29 Aug 2013 23:46:28 -0700 (PDT) Received: by 10.217.67.69 with HTTP; Thu, 29 Aug 2013 23:46:27 -0700 (PDT) In-Reply-To: References: Date: Thu, 29 Aug 2013 23:46:27 -0700 Message-ID: Subject: Re: 9.2-RC3 - suspend/resume causes slow system performance From: Mike Harding To: Adrian Chadd Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.14 Cc: FreeBSD Stable Mailing List X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Aug 2013 06:46:30 -0000 I was able to track this down by building kernels against /base/stable/9 (it took -hours!-). The issue does occur with commit 244616, but does not occur with 244614. The only difference is a small patch to /usr/src/sys/dev/acpica/acpi_cpu.c - this code appears to do with c-state processing. I'll note it in the ticket, but somebody might want to look at this ASAP On Thu, Aug 29, 2013 at 7:10 AM, Adrian Chadd wrote: > Wow. Uhm, can you downgrade to 9.1 and see if it still happens? > > Would you be able to bisect the kernel source and see if you can find > where along stable/9 it happened? That's the fastest way to determine what > broke. > > Thanks! > > > > -adrian > > > > On 29 August 2013 06:32, Mike Harding wrote: > >> I opened a ticket about this: kern/181632 >> >> Basically, if I do a 'zzz' and then wake the system up, operations like a >> buildworld or portmaster take much longer after the resume - systat shows >> very low CPU/disk utilization. It's 100% repeatable, I don't recall this >> happening on 9.1 >> >> I build 9.2-RC3 from source (as I have for years) - this is a fairly >> generic SMP system (i5 750 with 4 cpus). >> >> Let me know if I can provide any data - this is a fairly significant >> regression for me as I have taken to bringing the system up as needed vs. >> leaving it on all of the time. >> _______________________________________________ >> freebsd-stable@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-stable >> To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" >> > >