From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fantu Subject: Re: Strange latency hvm domU boot xen 4.0.1-rc2-pre and 2.6.32.15 pv_ops Date: Mon, 7 Jun 2010 05:58:17 -0700 (PDT) Message-ID: <28804864.post@talk.nabble.com> References: <28785415.post@talk.nabble.com> <20100605132008.GQ17817@reaktio.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20100605132008.GQ17817@reaktio.net> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org Config is based on config of debian kernel:=20 http://old.nabble.com/file/p28804864/config-2.6.32.15 myconfig=20 Pasi K=C3=A4rkk=C3=A4inen wrote: >=20 > i no add other debug option, i must remove some option in this? > and the grub entry: > title=09=09Xen 4 / Debian GNU/Linux, kernel 2.6.32.15 > root=09=09(hd0,0) > kernel=09=09/boot/xen.gz dom0_mem=3D1536M > module=09=09/boot/vmlinuz-2.6.32.15 root=3DLABEL=3Droot-raid ro nomodeset > module=09=09/boot/initrd.img-2.6.32.15 > On Fri, Jun 04, 2010 at 02:27:55PM -0700, Fantu wrote: >>=20 >> Dom0: >> pvops 2.6.32.15 (last commit of xen/stable2.6.32.x) >> xen 4.0 hg-testing (changeset 21188) >> 13 windows pv guest (all xp pro sp3 with gplpv 0.11.0.213), disk with >> tap2:aio >> dom0 RAM fixed to 1GB and balloning off >>=20 >> we noticed a very impressive speed starting up the first 6-7 windows >> domU. >> after this very high loading speed, starting the remaining domains alway= s >> lead to >> an gradual performance loss. >> activity on phisical disk seems to be less and less) and the remaining >> domains >> are loaded at very low speed respect to the former. >> after a relative long time (2-6 minutes) and some of the latest domains >> were >> loaded >> and started, the remaining 1-2 domains seems to load at normal (high) >> speed >> again. >>=20 >> is no problem of start specific domU >> before update kernel and xen to last commit the problem was more >>=20 >> save, restore and shutdown of all 13 domU are very fast, problem is only >> on >> start...already reapeat all test some times >>=20 >> no logs in syslog nor in kernel.log neither in xend.log are printed out, >> even with >> maximum level of verbosity. >>=20 >> any help appreciated here >> >=20 > Have you checked your dom0 kernel .config for various DEBUG options?=20 >=20 > Some people reported performance problems earlier and it turned out they > had some (extra) debugging options turned on.. >=20 > Worth checking. >=20 > -- Pasi >=20 >=20 > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel >=20 >=20 --=20 View this message in context: http://old.nabble.com/Strange-latency-hvm-dom= U-boot-xen-4.0.1-rc2-pre-and-2.6.32.15-pv_ops-tp28785415p28804864.html Sent from the Xen - Dev mailing list archive at Nabble.com.