similar to: Regarding file vs block devices for the guest

----- Forwarded message from Jeremy Allison <jra@samba.org> ----- From: Jeremy Allison <jra@samba.org> To: samba-technical@samba.org Cc: jra@samba.org Subject: Patch to improve Samba write speeds on Linux ext3 with 3.2.x Reply-To: Jeremy Allison <jra@samba.org> Hi all, Intel recently did some research on Samba write speeds, tested in Linux using ext3 resulting in the following

Hello, I am currently trying to move my VMs from running on local host storage to a shared storage (trying out iSCSI) but I am facing a bit of a booting dilemma. The domUs are a mix of paravirtualized and fully-virtualized VMs. They all boot and run like clockwork when on local storage. The paravirtualized domUs appear not to have a problem when I relocate and boot them from the shared storage

Hi all, my name is Hirofumi Tsujimura. We are porting and testing a PV-on-HVM in the IPF. This is a first time to send mail. I probably found the problem when I tested the VNIF. My operation for the test is following. 1. create a domain VTx and attach the VNIF in it. 2. create a domain U. 3. send a packet to the domain VTx from the domain U with ping command. Then, the domain VTx

Hi, for example, if I have glVertex3f(0.75, 0.75, 1.0) how the video card processes these three floats? Does the card work with floats? Does (mesa? gallium? driver?) process these three input floats before it is sent to the card? Where is the code for it? If you say the floats are memory mapped as in exec->vtx.buffer_map = (GLfloat *)ctx->Driver.MapBufferRange(...) I would say from what I

On Fri, May 21, 2010 at 15:37:45AM -0400, Josef Bacik wrote: > On Fri, May 21, 2010 at 11:21:11AM -0400, Christoph Hellwig wrote: >> On Wed, May 19, 2010 at 04:24:51PM -0400, Josef Bacik wrote: >> > Btrfs cannot handle having logically non-contiguous requests submitted. For >> > example if you have >> > >> > Logical: [0-4095][HOLE][8192-12287]

Hi, We''re doing some benchmarking at a customer (using IOzone) and for some specific small block random tests, performance of their X4500 is very poor (~1.2 MB/s aggregate throughput for a 5+1 RAIDZ). Specifically, the test is the IOzone multithreaded throughput test of an 8GB file size and 8KB record size, with the server physmem''d to 2GB. I noticed a couple of peculiar

Hi all, This patch adds two new apodization functions that I developed. From my own test results (on quite a diverse dataset) they outperform the current best apodizations by 0.05% - 0.1% (depending on the specifics) on compression. Here's a selection of the test results *Apodization functions* ,Compres, Speed partial_tukey(2) tukey(0.5) , 56.50 , 37.2x partial_tukey(3)

On Tue, Apr 19, 2016 at 8:52 AM, Daniel Melo Jorge da Cunha <dmjcunha at gmail.com> wrote: > Hi, for example, if I have glVertex3f(0.75, 0.75, 1.0) how the video card > processes > these three floats? Does the card work with floats? Does (mesa? gallium? > driver?) > process these three input floats before it is sent to the card? Where is the > code > for it?

Martijn van Beurden wrote: Hi Marijn, Sorry for the lack of response on this. I didn't understand it when it came in and I needed time to properly review it. Sunday morning after a really good night's sleep seems like a good time for that :-). I've currently got this patch in an un-published branch. > This patch adds two new apodization functions that I developed. > From my

Hi Matt, Can you please provide us with more information? 1. what version of glusterfs are you using 2. Was the iozone run as root or user? a. if user, did it have the required permissions? 3. steps to reproduce the problem 4. Any other errors related to stripe in the clinet log? With regards, Shishir ________________________________________ From: gluster-users-bounces at gluster.org

From: Ben Skeggs <bskeggs at redhat.com> We've previously had identical naming between vertex and texture formats, so it mostly made sense to define these together. However, upcoming patches are going to transition the driver over to using updated texture header definitions using NVIDIA's naming, and this will no longer be the case. Signed-off-by: Ben Skeggs <bskeggs at

Hi Ilia, you were straight to the point for me in: "src/mesa/vbo will upload it to a vbo. The driver then points the hardware at the vbo and tells it to read from there." But where is it the function that implements this? Is it in nv30_draw_vbo(...)? Please, give me a function name or at least a file name? 2016-04-19 10:04 GMT-04:00 Ilia Mirkin <imirkin at alum.mit.edu>: >

Dear all, I am quite new in this virtualization area. I am want to do some experiment with live migration using xen. However, I got problem since my server didn''t support VTx. I am using Ubuntu desktop 12.04 64 bit with Xen 4.1 Amd64. But when I reload the machine it wont start, since the XEN website its doesn''t matter using Paravirtualization without VTx support I dont know

Hi, Well I have a freshly built system with ZFS raidz. Intel P4 2.4 Ghz 1GB Ram Marvell Technology Group Ltd. MV88SX6081 8-port SATA II PCI-X Controller (2) Intel Dual Port 1Gbit nics I have (5) 300GB disks in a Raidz1 with Zfs. I''ve created a couple of FS on this. /export/downloads /export/music /export/musicraw I''ve shared these out as well. First with ZFS ''zfs

Hi, I am measuring the performance of my newly bought NAS with IOZone. The NAS is of an embedded linux with samba installed. (CPU is Intel Atom) The IOZone reported that write performance to be over 1GBps while the file size less or equals to 1GB. Since the nic is 1Gbps, the maximum speed is supposed to be 125MiBps at most. The testing report of IOZone is amazing. Later I found that If the

Hi Jeff, On 07/03/2010 03:58 AM, Jeff Moyer wrote: > Hi, > > Running iozone or fs_mark with fsync enabled, the performance of CFQ is > far worse than that of deadline for enterprise class storage when dealing > with file sizes of 8MB or less. I used the following command line as a > representative test case: > > fs_mark -S 1 -D 10000 -N 100000 -d /mnt/test/fs_mark -s

Here are my results: Summary: I am not able to reproduce the problem, IOW I get relatively equivalent numbers for sequential IO when going against 3.10.5 or 3.12.0 Next steps: - Could you pass along your volfile (both for a brick and also the client vol file (from /var/lib/glusterd/vols/<yourvolname>/patchy.tcp-fuse.vol and a brick vol file from the same place) - I want to check

Hi all, Can anyone please steer me in the right direction with this one? I've searched the net, but couldn't find a clear answer. How do I actually generate graphs from iozone, using OpenOffice? Every website I've been to simply mentions that iozone can output an xls file which can be used in MS Excel to generate a 3D graph. But, I can't see how it's actually done. Can anyone

I have a rather large box (2x8-core Xeon, 96GB RAM) where I have a couple of disk arrays connected on an Areca controller. I just added a new external array, 8 3TB drives in RAID5, and the testing I'm doing right now is on this array, but this seems to be a problem on this machine in general, on all file systems (even, possibly, NFS, but I'm not sure about that one yet). So, if I use

I''m running Postgresql (v8.1.10) on Solaris 10 (Sparc) from within a non-global zone. I originally had the database "storage" in the non-global zone (e.g. /var/local/pgsql/data on a UFS filesystem) and was getting performance of "X" (e.g. from a TPC-like application: http://www.tpc.org). I then wanted to try relocating the database storage from the zone (UFS