Date: Thu, 29 Aug 2013 23:46:27 -0700 From: Mike Harding <mvharding@gmail.com> To: Adrian Chadd <adrian@freebsd.org> Cc: FreeBSD Stable Mailing List <freebsd-stable@freebsd.org> Subject: Re: 9.2-RC3 - suspend/resume causes slow system performance Message-ID: <CALRn2n9G1%2BBS8KVUc_RFZj-snM3FVJvsEEcnWqv-GF82=CqS6Q@mail.gmail.com> In-Reply-To: <CAJ-Vmom970ZBLPLWWTomkKtX1w-Fi3cj5qva1_ODcx22nqEXfA@mail.gmail.com> References: <CALRn2n_2tUc0vPCFpgmAjYRm1=7KB5sA3A%2BxQqcc=ye-S1-0LA@mail.gmail.com> <CAJ-Vmom970ZBLPLWWTomkKtX1w-Fi3cj5qva1_ODcx22nqEXfA@mail.gmail.com>
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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 <adrian@freebsd.org> 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 <mvharding@gmail.com> 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" >> > >
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