Date: Tue, 26 May 2015 09:06:24 -0700 From: Neel Natu <neelnatu@gmail.com> To: Garrett Cooper <yaneurabeya@gmail.com> Cc: Alexander Motin <mav@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org>, "freebsd-testing@freebsd.org" <freebsd-testing@freebsd.org>, Peter Grehan <grehan@freebsd.org> Subject: Re: cam(4) timeouts in bhyve/kyua runs up on Jenkins? Message-ID: <CAFgRE9HR5AOeTqOfFD4Wzg3Zbp%2BF4n1_MOBzd8k%2B1qJjVhp_AA@mail.gmail.com> In-Reply-To: <9FBE053A-971A-433E-9B88-D62CF9273CFB@gmail.com> References: <28845361-E624-4CB9-B255-1B2C1FD0DF28@gmail.com> <4BEE0A54-3AD2-42DB-AF4E-2B0A5E34DF4E@gmail.com> <553F3CA7.9090601@FreeBSD.org> <9FBE053A-971A-433E-9B88-D62CF9273CFB@gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Hi NGie, On Mon, May 25, 2015 at 1:40 PM, Garrett Cooper <yaneurabeya@gmail.com> wro= te: > On Apr 28, 2015, at 0:54, Alexander Motin <mav@FreeBSD.org> wrote: > >> Hi. >> >> On 27.04.2015 21:17, Garrett Cooper wrote: >>> On Apr 27, 2015, at 11:16, Garrett Cooper <yaneurabeya@gmail.com> >>> wrote: >>> >>>> I was looking at the console log for the latest kyua run and I=E2=80= =99ve >>>> noticed that it=E2=80=99s timing out a bit more [1] than it was >>>> previously [2]. I=E2=80=99ve seen some of your commits recently to cam= (4) >>>> dealing with bhyve =E2=80=94 has there been a performance regression >>>> there? Thanks! -NGie >>>> >>>> 1. >>>> https://jenkins.freebsd.org/job/FreeBSD_HEAD-tests2/940/console >>>> 2. >>>> https://jenkins.freebsd.org/job/FreeBSD_HEAD-tests2/983/console >>> >>> (Sorry for not being more explicit for the archives) These are the >>> timeouts I=E2=80=99m referring to: >>> >>> ahcich0: is 00000000 cs 00000000 ss 1f000000 rs 1f000000 tfd 50 >>> serr 00000000 cmd 1000dc17 (ada0:ahcich0:0:0:0): >>> WRITE_FPDMA_QUEUED. ACB: 61 08 a8 54 1e 40 00 00 00 00 00 00 >>> (ada0:ahcich0:0:0:0): CAM status: Command timeout >>> (ada0:ahcich0:0:0:0): Retrying command Can you try to reproduce with a virtio-blk instead of ahci-hd? It will help narrow down the problem because both ahci-hd and virtio-blk emulations share a common backend to read/write to the disk. best Neel >> >> Last time I was more working on bhyve host disk emulation, rather then >> on cam(4) running on guest. Considering that, what guest and what host >> versions are you running? Is there any other load on host except this VM >> that could cause I/O delays high enough to trigger timeouts? What are >> you using to back the virtual disk (file, zvol, ...)? > > I have no idea what the Jenkins slaves are running in terms of configurat= ion/version/etc. You=E2=80=99ll have to ask jenkins-admin@=E2=80=A6 > Thanks! > -NGie
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAFgRE9HR5AOeTqOfFD4Wzg3Zbp%2BF4n1_MOBzd8k%2B1qJjVhp_AA>