From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fantu Subject: Re: Low performance and some problem with kernel 2.6.32.13 and xen 4.0-rc1 Date: Thu, 3 Jun 2010 02:30:36 -0700 (PDT) Message-ID: <28765188.post@talk.nabble.com> References: <28704783.post@talk.nabble.com> <20100528095633.GG17817@reaktio.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20100528095633.GG17817@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 Now i have update kernel to last of xen/stable2.6.32.x DomU disk is with blktap2 (tap2:aio) 13 domU hvm (windows xp with gplpv 0.11.213) running dom0 ram decrease to 1.5 gb: ------------------------ #free total used free shared buffers cached Mem: 1563136 1485024 78112 0 35960 1155452 -/+ buffers/cache: 293612 1269524 Swap: 2097144 0 2097144 ------------------------ Some error show on boot mainly about ioapic and acpi, here dmesg:=20 http://old.nabble.com/file/p28765188/dmesg dmesg=20 What these messagges are related to? Kernel, xen or bios? Pasi K=C3=A4rkk=C3=A4inen wrote: >=20 > On Fri, May 28, 2010 at 02:45:04AM -0700, Fantu wrote: >>=20 >> Server is Dell T610 with last bios (2.0.13) >> Dom0: Lenny 64 bit, kernel 2.6.32.13, xen 4.0-rc1 >> Kernel is last commit of jeremy git xen/stable-2.6.32.x with this config= :=20 >> http://old.nabble.com/file/p28704783/config-2.6.32.13 config-2.6.32.13= =20 >> lspci -vvv: http://old.nabble.com/file/p28704783/lspcivvv.log >> lspcivvv.log=20 >> dmidecode: http://old.nabble.com/file/p28704783/dmidecode.log >> dmidecode.log=20 >> dmesg: http://old.nabble.com/file/p28704783/dmesg dmesg=20 >> lsmod: http://old.nabble.com/file/p28704783/lsmod.log lsmod.log=20 >> xend log: http://old.nabble.com/file/p28704783/xend.log xend.log=20 >> menu.lst: >> title Xen 4 / Debian GNU/Linux, kernel 2.6.32.13 >> root (hd0,0) >> kernel /boot/xen.gz dom0_mem=3D2560M >> module /boot/vmlinuz-2.6.32.13 root=3DLABEL=3Droot-backup2 ro >> nomodeset >> module /boot/initrd.img-2.6.32.13 >>=20 >> The server run 12 domU windows xp with gplpv 0.11.0.213, all work >> On dom0 blktap not work (write about in other topic) and i must chage >> domU >> disk from tap:aio to file, is one or the problem about performance? >> With not set of dom0 memory and dom0 balloning have "freeze" with last >> msg >> calltrace about out of memory, i set dom0 memory in menu.lst and disable >> dom0 balloning, is necessary more ram that 2.5gb for dom0? >> >=20 > You really don't need 2,5 GB for dom0. > Start with 1024 MB. You might be able to go down to 512 MB or so. >=20 > It really depends what kind of tools you run in dom0. >=20 > Also remember that file: driver for guest disks uses dom0 page cache, > so it may appear that a lot of dom0 memory is used when using file: drive= r > since dom0 page cache will use *all* the free memory.. so increasing=20 > dom0 memory just makes you use more of the memory as cache. >=20 > You really should get tap:aio: working instead. But I guess you open > another > thread about it. >=20 >> There are some option in .config of kernel wrong or not good? >> with c state option in bios enable system is inusable, now i disable it >> but >> this is kernel, xen or bios problem? >>=20 >> I hope this information helps improve the kernel and xen, tell me if nee= d >> another information >>=20 >> Thanks for any reply about my questions >>=20 >=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/Low-performance-and-som= e-problem-with-kernel-2.6.32.13-and-xen-4.0.1-rc1-tp28704783p28765188.html Sent from the Xen - Dev mailing list archive at Nabble.com.