On Thu, Feb 23, 2012 at 7:08 PM, peter.lie...@gmail.com p...@dlh.net wrote:
Stefan Hajnoczi stefa...@gmail.com schrieb:
On Thu, Feb 23, 2012 at 3:40 PM, Peter Lieven p...@dlh.net wrote:
However, in a virtual machine I have not observed the above slow down
to
that extend
while the benefit
On Fri, Feb 24, 2012 at 6:41 AM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Thu, Feb 23, 2012 at 7:08 PM, peter.lie...@gmail.com p...@dlh.net wrote:
Stefan Hajnoczi stefa...@gmail.com schrieb:
On Thu, Feb 23, 2012 at 3:40 PM, Peter Lieven p...@dlh.net wrote:
However, in a virtual machine
On Fri, Feb 24, 2012 at 6:53 AM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Fri, Feb 24, 2012 at 6:41 AM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Thu, Feb 23, 2012 at 7:08 PM, peter.lie...@gmail.com p...@dlh.net wrote:
Stefan Hajnoczi stefa...@gmail.com schrieb:
On Thu, Feb 23, 2012
On Wed, Feb 22, 2012 at 4:48 PM, Dongsu Park
dongsu.p...@profitbricks.com wrote:
Try turning ioeventfd off for the virtio-blk device:
-device virtio-blk-pci,ioeventfd=off,...
You might see better performance since ramdisk I/O should be very
low-latency. The overhead of using ioeventfd might
On Tue, Feb 21, 2012 at 3:57 PM, Dongsu Park
dongsu.p...@profitbricks.com wrote:
On 13.02.2012 11:57, Stefan Hajnoczi wrote:
On Fri, Feb 10, 2012 at 2:36 PM, Dongsu Park
dongsu.p...@profitbricks.com wrote:
Now I'm running benchmarks with both qemu-kvm 0.14.1 and 1.0.
- Sequential read
On Tue, Feb 21, 2012 at 5:42 AM, 夏业添 summer...@gmail.com wrote:
I want to know if there is other way besides network to make two
guests on a same host to communicate with each other.
And when there is an inter-vm communication by virtual network, are
these network packages passing the
On Fri, Feb 17, 2012 at 3:31 PM, Pete Ashdown pashd...@xmission.com wrote:
On 02/17/2012 04:30 AM, Stefan Hajnoczi wrote:
On Fri, Feb 17, 2012 at 4:57 AM, Pete Ashdown pashd...@xmission.com wrote:
I've been waiting for some response from the Ubuntu team regarding a bug on
launchpad
On Fri, Feb 17, 2012 at 4:57 AM, Pete Ashdown pashd...@xmission.com wrote:
I've been waiting for some response from the Ubuntu team regarding a bug on
launchpad, but it appears that it isn't being taken seriously:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/745785
This looks
On Fri, Feb 10, 2012 at 2:36 PM, Dongsu Park
dongsu.p...@profitbricks.com wrote:
Now I'm running benchmarks with both qemu-kvm 0.14.1 and 1.0.
- Sequential read (Running inside guest)
# fio -name iops -rw=read -size=1G -iodepth 1 \
-filename /dev/vdb -ioengine libaio -direct=1 -bs=4096
This year's Google Summer of Code has been announced:
http://www.google-melange.com/gsoc/events/google/gsoc2012
For those who haven't heard of GSoC before, it funds university
students to work on open source projects during the summer.
Organizations, such as QEMU, can participate to attract
is starting to look like wishful thinking,
but the possibility of regressions is obviously zero so I'm still dreaming.
Otherwise, that would be 3.4.
Reviewed-by: Stefan Hajnoczi stefa...@linux.vnet.ibm.com
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On Fri, Feb 10, 2012 at 10:59 AM, Daniel P. Berrange
berra...@redhat.com wrote:
On Fri, Feb 10, 2012 at 10:30:24AM +, Stefan Hajnoczi wrote:
This year's Google Summer of Code has been announced:
http://www.google-melange.com/gsoc/events/google/gsoc2012
For those who haven't heard of GSoC
2012/2/1 Avi Kivity a...@redhat.com:
On 02/01/2012 11:08 AM, Takuya Yoshikawa wrote:
What is the status of Stefan's work?
Stefan's on vacation.
Back now. I will try to get back to movdqa soon.
Stefan
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On Mon, Jan 16, 2012 at 9:32 AM, Xiao Guangrong
xiaoguangr...@linux.vnet.ibm.com wrote:
+DESCRIPTION
+---
+You can analyze some crucial events and statistics with this
+'perf kvm-events' command.
This line is very general and does not explain which events/statistics
can be collected
On Fri, Jan 13, 2012 at 7:45 AM, Liu ping fan kernelf...@gmail.com wrote:
On Thu, Jan 12, 2012 at 5:21 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Thu, Jan 12, 2012 at 4:38 AM, Liu ping fan kernelf...@gmail.com wrote:
Could anybody give some description about the implement of hyercall
On Thu, Jan 12, 2012 at 4:38 AM, Liu ping fan kernelf...@gmail.com wrote:
Could anybody give some description about the implement of hyercall in
kvm? Or give some links about it?
Try git grep hypercall arch/x86/kvm.
Take a look at arch/x86/kvm/x86.c kvm_set_msr_common() and
On Wed, Jan 11, 2012 at 3:24 PM, Bernd Schubert
bernd.schub...@itwm.fraunhofer.de wrote:
Any idea what is going on or how to debug it?
Here are a couple of ideas that would yield more information:
Since the console still works I suggest checking dmesg output inside
the guest. Are there any
On Wed, Jan 11, 2012 at 4:18 PM, Bernd Schubert
bernd.schub...@itwm.fraunhofer.de wrote:
On 01/11/2012 05:04 PM, Stefan Hajnoczi wrote:
Try pinging the host's IP address from inside the guest. Run tcpdump
on the guest's tap interface from the host and observe whether or not
you see any
#GP. The emulator
will therefore never meet unaligned movdqa instructions.
Also change read/write to store/load to make it obvious whether
the test transfers to or from memory. Previous usage of read and
write was misleading.
Signed-off-by: Stefan Hajnoczi stefa...@linux.vnet.ibm.com
On Sun, Jan 8, 2012 at 10:32 AM, Avi Kivity a...@redhat.com wrote:
On 01/07/2012 12:26 PM, Stefan Hajnoczi wrote:
movdqa %xmm0,(%rdi)
This patch adds movdqa to the emulator but does not implement #GP when
the memory operand is unaligned to 16 bytes. I'm not sure whether
alignment checking
this guest
userspace SSE instruction in the first place? This host machine lacks
EPT but can't we service the page fault and then retry execution inside
the guest?
Signed-off-by: Stefan Hajnoczi stefa...@linux.vnet.ibm.com
---
arch/x86/kvm/emulate.c |9 -
1 files changed, 8 insertions
The unimplemented movdqa (66 0f 7f 07) instruction triggers a bug in
the x86 emulator. The emulator should fail since the instruction is
unimplemented. However the emulator thinks it is succeeding but we
keep re-executing the same instruction over and over. top shows 100%
CPU utilization and
On Wed, Jan 4, 2012 at 2:47 AM, Cao,Bing Bu m...@linux.vnet.ibm.com wrote:
On 01/03/2012 09:12 PM, Stefan Hajnoczi wrote:
On Tue, Jan 3, 2012 at 12:15 PM, Dor Laordl...@redhat.com wrote:
On 01/03/2012 10:33 AM, Stefan Hajnoczi wrote:
On Mon, Jan 02, 2012 at 01:09:40PM +0100, Juan Quintela
On Mon, Jan 02, 2012 at 01:09:40PM +0100, Juan Quintela wrote:
Please send in any agenda items you are interested in covering.
Status of virtio drivers for Windows:
* Unsupported in community today
* Bugs languish on bug tracker/mailing list
* Risking a reputation of not supporting Windows
On Tue, Jan 3, 2012 at 12:15 PM, Dor Laor dl...@redhat.com wrote:
On 01/03/2012 10:33 AM, Stefan Hajnoczi wrote:
On Mon, Jan 02, 2012 at 01:09:40PM +0100, Juan Quintela wrote:
Please send in any agenda items you are interested in covering.
Status of virtio drivers for Windows
On Mon, Jan 2, 2012 at 9:28 AM, Dor Laor dl...@redhat.com wrote:
At the end of the day, it's performance testing using various scenarios that
can educate us whether post-copy worth the extra complexity over slowing
down the guest on the source.
True. It's certainly an interesting patch series
On Sun, Jan 1, 2012 at 9:43 AM, Orit Wasserman owass...@redhat.com wrote:
On 12/30/2011 12:39 AM, Anthony Liguori wrote:
On 12/28/2011 07:25 PM, Isaku Yamahata wrote:
Intro
=
This patch series implements postcopy live migration.[1]
As discussed at KVM forum 2011, dedicated character
On Thu, Dec 22, 2011 at 11:41 PM, Minchan Kim minc...@kernel.org wrote:
On Thu, Dec 22, 2011 at 12:57:40PM +, Stefan Hajnoczi wrote:
On Wed, Dec 21, 2011 at 1:00 AM, Minchan Kim minc...@kernel.org wrote:
If you're stumped by the performance perhaps compare blktraces of the
request approach
On Wed, Dec 21, 2011 at 1:00 AM, Minchan Kim minc...@kernel.org wrote:
+static void virtblk_add_buf_wait(struct virtio_blk *vblk,
+ struct virtblk_req *vbr, unsigned long out, unsigned long in)
+{
+ DEFINE_WAIT(wait);
+ bool retry, notify;
+
+ for (;;) {
+
On Wed, Dec 21, 2011 at 1:00 AM, Minchan Kim minc...@kernel.org wrote:
This patch is follow-up of Christohp Hellwig's work
[RFC: -make_request support for virtio-blk].
http://thread.gmane.org/gmane.linux.kernel/1199763
Quote from hch
This patchset allows the virtio-blk driver to support much
On Wed, Dec 7, 2011 at 3:03 AM, Jason Wang jasow...@redhat.com wrote:
On 12/06/2011 09:15 PM, Stefan Hajnoczi wrote:
On Tue, Dec 6, 2011 at 10:21 AM, Jason Wangjasow...@redhat.com wrote:
On 12/06/2011 05:18 PM, Stefan Hajnoczi wrote:
On Tue, Dec 6, 2011 at 6:33 AM, Jason Wangjasow
On Wed, Dec 7, 2011 at 12:10 PM, Jason Wang jasow...@redhat.com wrote:
On 12/07/2011 05:08 PM, Stefan Hajnoczi wrote:
[...]
Consider the complexity of the host nic each with their own steering
features, this series make the first step with minimal effort to try
to let
guest driver
On Tue, Dec 6, 2011 at 6:33 AM, Jason Wang jasow...@redhat.com wrote:
On 12/05/2011 06:55 PM, Stefan Hajnoczi wrote:
On Mon, Dec 5, 2011 at 8:59 AM, Jason Wangjasow...@redhat.com wrote:
+static int virtnet_set_fd(struct net_device *dev, u32 pfn)
+{
+ struct virtnet_info *vi
On Tue, Dec 6, 2011 at 10:21 AM, Jason Wang jasow...@redhat.com wrote:
On 12/06/2011 05:18 PM, Stefan Hajnoczi wrote:
On Tue, Dec 6, 2011 at 6:33 AM, Jason Wangjasow...@redhat.com wrote:
On 12/05/2011 06:55 PM, Stefan Hajnoczi wrote:
On Mon, Dec 5, 2011 at 8:59 AM, Jason Wangjasow
On Mon, Dec 5, 2011 at 8:58 AM, Jason Wang jasow...@redhat.com wrote:
This patch adds a simple flow director to tun/tap device. It is just a
page that contains the hash to queue mapping which could be changed by
user-space. The backend (tap/macvtap) would query this table to get
the desired
On Mon, Dec 5, 2011 at 8:59 AM, Jason Wang jasow...@redhat.com wrote:
+static int virtnet_set_fd(struct net_device *dev, u32 pfn)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+ struct virtio_device *vdev = vi-vdev;
+
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_HOST_FD))
On Fri, Nov 25, 2011 at 10:34 AM, Simon Wilson si...@simonandkate.net wrote:
I have done a fair bit of analysis with dstat and using dd copies, and file
writes onto the VM's RAID5 slice sit between 35 and 40MBps consistently.
If you want to drill down on the disk I/O performance than removing
On Tue, Nov 22, 2011 at 2:39 PM, Juan Quintela quint...@redhat.com wrote:
Juan Quintela quint...@redhat.com wrote:
Hi
Please send in any agenda items you are interested in covering.
As there is no topic for today, and Anthony just give us reading we
would cancel today call.
Happy hacking
On Tue, Nov 22, 2011 at 3:00 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Tue, Nov 22, 2011 at 2:39 PM, Juan Quintela quint...@redhat.com wrote:
Juan Quintela quint...@redhat.com wrote:
Hi
Please send in any agenda items you are interested in covering.
As there is no topic for today
On Thu, Nov 10, 2011 at 2:47 PM, Markus Armbruster arm...@redhat.com wrote:
Pekka Enberg penb...@kernel.org writes:
Hi Anthony,
On Thu, Nov 10, 2011 at 3:43 PM, Anthony Liguori anth...@codemonkey.ws
wrote:
It's not just the qcow2 implementation or even the block layer. This pull
requests
On Wed, Nov 9, 2011 at 2:06 AM, qemu-...@buildbot.b1-systems.de wrote:
The Buildbot has detected a new failure on builder default_x86_64_debian_5_0
while building qemu-kvm.
Full details are available at:
http://buildbot.b1-systems.de/qemu-kvm/builders/default_x86_64_debian_5_0/builds/1019
On Sat, Nov 5, 2011 at 12:52 AM, Darren Hart dvh...@linux.intel.com wrote:
I have a 32b Fedora 15 guest mounting a filesystem from an Ubuntu 11.10
64b host using virtio and 9p. I'm using the mapping security mode
(tried squash as well). While I can create, edit, and delete files, when
I try to
On Mon, Nov 7, 2011 at 10:17 AM, Sasha Levin levinsasha...@gmail.com wrote:
Hi Avi,
Thank you for your comments!
Just one question below:
On Mon, Nov 7, 2011 at 11:26 AM, Avi Kivity a...@redhat.com wrote:
Crashing the guest is fine (not 100% - you can have unprivileged code
managing a
On Mon, Nov 7, 2011 at 12:51 PM, Avi Kivity a...@redhat.com wrote:
On 11/07/2011 02:40 PM, Sasha Levin wrote:
Where does the VNC server, the image formats, etc go? It would be
nice to confine them too.
Regarding image formats, just wondering - was there ever any plan to
merge (at least
On Thu, Nov 3, 2011 at 7:52 AM, Christoph Hellwig h...@infradead.org wrote:
On Thu, Nov 03, 2011 at 06:12:51PM +1030, Rusty Russell wrote:
Based on patch by Christoph for virtio_blk speedup:
Please credit it to Stefan - he also sent a pointer to his original
version in reply to the previous
On Mon, Oct 31, 2011 at 1:28 PM, Anthony Liguori aligu...@us.ibm.com wrote:
To make the Test Day more successful, please sign up to test a specific area
on the Test[3] wiki page.
[...]
[3] http://wiki.qemu.org/Planning/1.0/Testing
I just signed up for several block and tracing tests and
On Wed, Oct 26, 2011 at 03:19:17PM -0200, Lucas Meneghel Rodrigues wrote:
On 10/26/2011 01:47 PM, Kevin Wolf wrote:
Am 26.10.2011 16:41, schrieb Lucas Meneghel Rodrigues:
Hi folks:
We've captured a regression with floppy disk on recent qemu (and
qemu-kvm, after a code merge). We bisected it
On Fri, Oct 21, 2011 at 10:39 PM, Jason Wang jasow...@redhat.com wrote:
diff --git a/hw/virtio-net.c b/hw/virtio-net.c
index 8c2f460..7f844e7 100644
--- a/hw/virtio-net.c
+++ b/hw/virtio-net.c
@@ -95,6 +95,10 @@ static void virtio_net_set_config(VirtIODevice *vdev,
const uint8_t *config)
On Thu, Oct 20, 2011 at 4:21 AM, Gonzalo Marcote Peña
gonzalomarc...@gmail.com wrote:
Hi.
I have one guest that I created with virt-install comand option 'sparse=true'.
As i want to use now this guest for I/O tasks (DDBB) and i want to
improve performance, I want to convert the disk.img from
On Mon, Oct 17, 2011 at 11:26 AM, Kevin Wolf kw...@redhat.com wrote:
Am 26.09.2011 09:24, schrieb Zhi Yong Wu:
On Sat, Sep 24, 2011 at 12:19 AM, Kevin Wolf kw...@redhat.com wrote:
Am 08.09.2011 12:11, schrieb Zhi Yong Wu:
Note:
1.) When bps/iops limits are specified to a small value such
On Thu, Oct 13, 2011 at 05:03:53PM +0200, benoit ROUSSELLE wrote:
On Thu, Oct 13, 2011 at 4:27 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
dd performs buffered I/O by default. That means it just writes to the
page cache and the kernel decides when to write out dirty pages.
So your host
On Wed, Oct 12, 2011 at 1:21 PM, benoit ROUSSELLE brousse...@gmail.com wrote:
I am doing some disk io performance testing on the following environment:
Dell AMD R515 with:
- debian6 (2.6.32) on host and guests.
- raid1 mirror on a perc h700
- lvm used to create virtual disks volumes
- virtio
On Wed, Oct 05, 2011 at 03:54:05PM -0400, Christoph Hellwig wrote:
Split virtqueue_kick to be able to do the actual notification outside the
lock protecting the virtqueue. This patch was originally done by
Stefan Hajnoczi, but I can't find the original one anymore and had to
recreated it from
-by: Stefan Hajnoczi stefa...@linux.vnet.ibm.com
Perhaps qemu_eventfd() can be used in the future instead of an explicit
pipe. Then Linux will do eventfd while other OSes will fall back to
pipes.
Stefan
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On Fri, Sep 9, 2011 at 10:00 AM, Takuya Yoshikawa
yoshikawa.tak...@oss.ntt.co.jp wrote:
Vivek Goyal vgo...@redhat.com wrote:
So you are using both RHEL 6.0 in both host and guest kernel? Can you
reproduce the same issue with upstream kernels? How easily/frequently
you can reproduce this with
On Tue, Sep 6, 2011 at 11:25 PM, TooMeeK toomeek...@o2.pl wrote:
First, I created mirrored storage in hypervisor from one 600-gig partition
(yes, that's correct - I have only one drive currently), details:
sudo mdadm --detail /dev/md3
/dev/md3:
Version : 1.2
Creation Time : Thu Jul
On Mon, Sep 5, 2011 at 9:51 AM, Avi Kivity a...@redhat.com wrote:
I put up a wiki page about the guest PMU:
http://www.linux-kvm.org/page/Guest_PMU
it is mostly the TODO list.
Nice, do you have a git repo link?
Stefan
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the
Emulator queue declaration for block layer
+ *
+ * Copyright (c) IBM, Corp. 2011
+ *
+ * Authors:
+ * Zhi Yong Wu zwu.ker...@gmail.com
+ * Stefan Hajnoczi stefa...@gmail.com
Please use linux.vnet.ibm.com addresses and not GMail.
+ *
+ * Permission is hereby granted, free of charge, to any
On Thu, Sep 1, 2011 at 12:44 PM, Zhi Yong Wu wu...@linux.vnet.ibm.com wrote:
Note:
1.) When bps/iops limits are specified to a small value such as 511
bytes/s, this VM will hang up. We are considering how to handle this senario.
2.) When dd command is issued in guest, if its option bs
On Sat, Aug 27, 2011 at 7:09 PM, Umesh Deshpande udesh...@redhat.com wrote:
This patch implements migrate_ram mutex, which protects the RAMBlock list
traversal in the migration thread during the transfer of a ram from their
addition/removal from the iothread.
Note: Combination of iothread
On Sat, Aug 27, 2011 at 7:09 PM, Umesh Deshpande udesh...@redhat.com wrote:
This patch creates a separate thread for the guest migration on the source
side.
All exits (on completion/error) from the migration thread are handled by a
bottom handler, which is called from the iothread.
On Thu, Aug 25, 2011 at 6:06 AM, Pekka Enberg penb...@kernel.org wrote:
On Wed, 2011-08-24 at 21:49 -0700, David Evensky wrote:
On Wed, Aug 24, 2011 at 10:27:18PM -0500, Alexander Graf wrote:
On 24.08.2011, at 17:25, David Evensky wrote:
This patch adds a PCI device that provides
On Mon, Jul 4, 2011 at 11:00 PM, Raghavendra D Prabhu
raghu.prabh...@gmail.com wrote:
The gnutls_*_set_priority family of functions has been marked deprecated
in 2.12.x. These functions have been superceded by
gnutls_priority_set_direct().
Signed-off-by: Raghavendra D Prabhu
On Thu, Aug 25, 2011 at 11:37 AM, Pekka Enberg penb...@kernel.org wrote:
Hi Stefan,
On Thu, Aug 25, 2011 at 1:31 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
It's obviously not competing. One thing you might want to consider is
making the guest interface compatible with ivshmem. Is there any
On Wed, Aug 24, 2011 at 10:02 AM, Xiao Guangrong
xiaoguangr...@cn.fujitsu.com wrote:
On 08/24/2011 04:40 PM, Paul wrote:
Hi,
I captured the output of pidstat when the problem was reproduced:
bash-4.1# pidstat -p $PID 8966
Linux 2.6.32-71.el6.x86_64 (test) 07/24/11 _x86_64_
On Tue, Aug 23, 2011 at 9:10 AM, Paul fly...@gmail.com wrote:
From trace messages, it seemed no interrupts for guest.
I also tried sysrq, but it didn't work. I doubt that kvm-qemu entered
some infinite loop.
The fact that a fresh VNC connection to the guest works (but the mouse
doesn't move)
On Mon, Aug 22, 2011 at 6:29 PM, Jan Kiszka jan.kis...@siemens.com wrote:
On 2011-08-14 06:04, Avi Kivity wrote:
In certain circumstances, posix-aio-compat can incur a lot of latency:
- threads are created by vcpu threads, so if vcpu affinity is set,
aio threads inherit vcpu affinity.
On Mon, Jul 4, 2011 at 11:00 PM, Raghavendra D Prabhu
raghu.prabh...@gmail.com wrote:
The gnutls_*_set_priority family of functions has been marked deprecated
in 2.12.x. These functions have been superceded by
gnutls_priority_set_direct().
Signed-off-by: Raghavendra D Prabhu
On Mon, Aug 22, 2011 at 10:37 AM, Paul fly...@gmail.com wrote:
Hi,
I found the clock of guest OS has been changed. For example, today was Aug
22, but I found the time of guest was Mar 22 from the VNC desktop. The clock
source of guest was kvm-clock. Was it related to KVM clock bug? How about
On Fri, Aug 19, 2011 at 10:58 AM, Zhi Yong Wu zwu.ker...@gmail.com wrote:
I have met one scenario; currently i want to set up a VM based on
latest kernel tree; but i only have latest kernel source code and
compiled it on one fedora 15 workstation. To achieve the objective,
what actions should
On Thu, Aug 18, 2011 at 8:42 AM, Paul fly...@gmail.com wrote:
Today I saw the guest OS hung and was no responsive. In the host, I
found the guest was running via virsh command. But I couldn't use ssh
to connect the guest, and even couldn't ping it. I could use VNC saw
the desktop of VNC, but I
On Fri, Aug 12, 2011 at 9:10 AM, Zhi Yong Wu zwu.ker...@gmail.com wrote:
On Tue, Aug 9, 2011 at 8:49 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Tue, Aug 9, 2011 at 5:17 AM, Zhi Yong Wu wu...@linux.vnet.ibm.com wrote:
+/* The APIs for block request queue on qemu block layer
On Fri, Aug 12, 2011 at 5:40 AM, Zhi Yong Wu zwu.ker...@gmail.com wrote:
On Wed, Aug 10, 2011 at 5:37 PM, Stefan Hajnoczi
stefa...@linux.vnet.ibm.com wrote:
On Wed, Aug 10, 2011 at 01:54:33PM +0800, Zhi Yong Wu wrote:
On Tue, Aug 9, 2011 at 8:49 PM, Stefan Hajnoczi stefa...@gmail.com wrote
On Fri, Aug 12, 2011 at 6:00 AM, Zhi Yong Wu zwu.ker...@gmail.com wrote:
On Wed, Aug 10, 2011 at 7:00 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Wed, Aug 10, 2011 at 7:57 AM, Zhi Yong Wu zwu.ker...@gmail.com wrote:
On Tue, Aug 9, 2011 at 11:19 PM, Stefan Hajnoczi stefa...@gmail.com wrote
On Fri, Aug 12, 2011 at 6:35 AM, Zhi Yong Wu zwu.ker...@gmail.com wrote:
On Tue, Aug 9, 2011 at 4:57 PM, Ram Pai linux...@us.ibm.com wrote:
On Tue, Aug 09, 2011 at 12:17:51PM +0800, Zhi Yong Wu wrote:
Note:
1.) When bps/iops limits are specified to a small value such as 511
bytes/s,
On Wed, Aug 10, 2011 at 01:20:22PM +0800, Zhi Yong Wu wrote:
On Tue, Aug 9, 2011 at 8:25 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Tue, Aug 9, 2011 at 5:17 AM, Zhi Yong Wu wu...@linux.vnet.ibm.com
wrote:
Signed-off-by: Zhi Yong Wu wu...@linux.vnet.ibm.com
---
Makefile.objs
On Wed, Aug 10, 2011 at 01:54:33PM +0800, Zhi Yong Wu wrote:
On Tue, Aug 9, 2011 at 8:49 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Tue, Aug 9, 2011 at 5:17 AM, Zhi Yong Wu wu...@linux.vnet.ibm.com
wrote:
+BlockDriverAIOCB *qemu_block_queue_enqueue(BlockQueue *queue
On Wed, Aug 10, 2011 at 01:09:27PM +0800, Zhi Yong Wu wrote:
On Tue, Aug 9, 2011 at 8:08 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Tue, Aug 9, 2011 at 5:17 AM, Zhi Yong Wu wu...@linux.vnet.ibm.com
wrote:
Makefile.objs | 2 +-
block.c | 347
On Wed, Aug 10, 2011 at 7:57 AM, Zhi Yong Wu zwu.ker...@gmail.com wrote:
On Tue, Aug 9, 2011 at 11:19 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Tue, Aug 9, 2011 at 5:17 AM, Zhi Yong Wu wu...@linux.vnet.ibm.com wrote:
Note:
1.) When bps/iops limits are specified to a small value
On Wed, Aug 10, 2011 at 09:18:01AM -0400, Christoph Hellwig wrote:
Any progress on these patches?
Khoa ran ffsb benchmarks on his rig and we didn't see any benefit. I
have not started investigating yet, been working on other things.
It will be necessary to compare against the old patches which
On Thu, Aug 11, 2011 at 12:44:11PM +0800, Zhi Yong Wu wrote:
On Wed, Aug 10, 2011 at 5:27 PM, Stefan Hajnoczi
stefa...@linux.vnet.ibm.com wrote:
On Wed, Aug 10, 2011 at 01:20:22PM +0800, Zhi Yong Wu wrote:
On Tue, Aug 9, 2011 at 8:25 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Tue
On Tue, Aug 9, 2011 at 5:17 AM, Zhi Yong Wu wu...@linux.vnet.ibm.com wrote:
Makefile.objs | 2 +-
block.c | 347
+++--
block.h | 6 +-
block/blk-queue.c | 141 ++
block/blk-queue.h | 73
On Tue, Aug 9, 2011 at 5:17 AM, Zhi Yong Wu wu...@linux.vnet.ibm.com wrote:
Signed-off-by: Zhi Yong Wu wu...@linux.vnet.ibm.com
---
Makefile.objs | 2 +-
blockdev.c | 39 +++
qemu-config.c | 24
qemu-option.c |
On Tue, Aug 9, 2011 at 5:17 AM, Zhi Yong Wu wu...@linux.vnet.ibm.com wrote:
+/* The APIs for block request queue on qemu block layer.
+ */
+
+static void qemu_block_queue_cancel(BlockDriverAIOCB *acb)
+{
+ qemu_aio_release(acb);
+}
+
+static AIOPool block_queue_pool = {
+
On Tue, Aug 9, 2011 at 5:17 AM, Zhi Yong Wu wu...@linux.vnet.ibm.com wrote:
Note:
1.) When bps/iops limits are specified to a small value such as 511
bytes/s, this VM will hang up. We are considering how to handle this senario.
If an I/O request is larger than the limit itself then I
On Mon, Aug 8, 2011 at 4:24 AM, Isaku Yamahata yamah...@valinux.co.jp wrote:
This mail is on Yabusame: Postcopy Live Migration for Qemu/KVM
on which we'll give a talk at KVM-forum.
I'm curious if this approach is compatible with asynchronous page
faults? The idea there was to tell the guest
On Thu, Aug 4, 2011 at 5:34 AM, Zhi Yong Wu wu...@linux.vnet.ibm.com wrote:
@@ -1387,6 +1422,11 @@ void bdrv_set_io_limits(BlockDriverState *bs,
{
memset(bs-io_limits, 0, sizeof(BlockIOLimit));
bs-io_limits = *io_limits;
+ if (bdrv_io_limits_enabled(bs)) {
+
On Fri, Jul 29, 2011 at 8:22 AM, Liu Yuan namei.u...@gmail.com wrote:
Hi Stefan
On 07/28/2011 11:44 PM, Stefan Hajnoczi wrote:
On Thu, Jul 28, 2011 at 3:29 PM, Liu Yuannamei.u...@gmail.com wrote:
Did you investigate userspace virtio-blk performance? If so, what
issues did you find?
Yes
On Fri, Jul 29, 2011 at 1:01 PM, Liu Yuan namei.u...@gmail.com wrote:
On 07/29/2011 05:06 PM, Stefan Hajnoczi wrote:
I mean did you investigate *why* userspace virtio-blk has higher
latency? Did you profile it and drill down on its performance?
It's important to understand what is going
I hit a weirdness yesterday, just want to mention it in case you notice it too.
When running vanilla qemu-kvm I forgot to use aio=native. When I
compared the results against virtio-blk-data-plane (which *always*
uses Linux AIO) I was surprised to find average 4k read latency was
lower and the
On Thu, Jul 28, 2011 at 6:43 AM, Zhi Yong Wu zwu.ker...@gmail.com wrote:
On Wed, Jul 27, 2011 at 8:58 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Wed, Jul 27, 2011 at 11:17 AM, Zhi Yong Wu zwu.ker...@gmail.com wrote:
On Wed, Jul 27, 2011 at 3:26 AM, Marcelo Tosatti mtosa...@redhat.com
On Thu, Jul 28, 2011 at 9:20 AM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Thu, Jul 28, 2011 at 6:43 AM, Zhi Yong Wu zwu.ker...@gmail.com wrote:
On Wed, Jul 27, 2011 at 8:58 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Wed, Jul 27, 2011 at 11:17 AM, Zhi Yong Wu zwu.ker...@gmail.com wrote
On Thu, Jul 28, 2011 at 3:29 PM, Liu Yuan namei.u...@gmail.com wrote:
+static int blk_completion_worker(void *priv)
+{
Do you really need this? How about using the vhost poll helper to
observe the eventfd? Then you can drop your own worker thread code
and simply have a work function to handle
On Thu, Jul 28, 2011 at 3:29 PM, Liu Yuan namei.u...@gmail.com wrote:
Did you investigate userspace virtio-blk performance? If so, what
issues did you find?
I have a hacked up world here that basically implements vhost-blk in userspace:
On Thu, Jul 28, 2011 at 4:44 PM, Stefan Hajnoczi stefa...@gmail.com wrote:
On Thu, Jul 28, 2011 at 3:29 PM, Liu Yuan namei.u...@gmail.com wrote:
Did you investigate userspace virtio-blk performance? If so, what
issues did you find?
I have a hacked up world here that basically implements
On Wed, Jul 27, 2011 at 8:17 AM, Igor Blanco ibla...@binovo.es wrote:
Hi everyone:
I had a problem yesterday with a virtual machine and I was not very
sure to whom I should report it so I much appreciate your opinion
about it.
I have a virtual machine that has a couple of CDROM drives
On Mon, Jul 25, 2011 at 7:25 PM, Lucas Meneghel Rodrigues
l...@redhat.com wrote:
Hi folks, a little later than expected, here are the docs that explain how
to run KVM autotest tests on an existing guest image:
http://autotest.kernel.org/wiki/KVMAutotest/RunTestsExistingGuest
Since we are
On Wed, Jul 27, 2011 at 02:47:20PM +0300, Avi Kivity wrote:
On 07/22/2011 02:46 PM, Stefan Hajnoczi wrote:
In practice both perf and trace-cmd are not happy with the new exit_reason
formatting expression (omitting the details and split across lines for easy
email reading here):
print fmt
On Wed, Jul 27, 2011 at 11:17 AM, Zhi Yong Wu zwu.ker...@gmail.com wrote:
On Wed, Jul 27, 2011 at 3:26 AM, Marcelo Tosatti mtosa...@redhat.com wrote:
On Tue, Jul 26, 2011 at 04:59:06PM +0800, Zhi Yong Wu wrote:
Welcome to give me your comments, thanks.
Signed-off-by: Zhi Yong Wu
On Tue, Jul 26, 2011 at 6:58 AM, Prateek Sharma prate...@cse.iitb.ac.in wrote:
On Tue, 26 Jul 2011, Stefan Hajnoczi wrote:
On Tue, Jul 26, 2011 at 6:05 AM, Prateek Sharma prate...@cse.iitb.ac.in
wrote:
Hi all,
Is there any equivalent of qemu's virtagent in qemu-kvm?
[http
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