similar to: iozone results

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

I just tried setting: performance.parallel-readdir on features.cache-invalidation on features.cache-invalidation-timeout 600 performance.stat-prefetch performance.cache-invalidation performance.md-cache-timeout 600 network.inode-lru-limit 50000 performance.cache-invalidation on and clients could not see their files with ls when accessing via a fuse mount. The files and directories were there,

2017-10-10 8:25 GMT+02:00 Karan Sandha <ksandha at redhat.com>: > Hi Gandalf, > > We have multiple tuning to do for small-files which decrease the time for > negative lookups , meta-data caching, parallel readdir. Bumping the server > and client event threads will help you out in increasing the small file > performance. > > gluster v set <vol-name> group

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 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

Hello: Sorry for asking iozone ques in this mailing list but couldn't find any mailing list on iozone... In IOZone, is there a way to configure # of outstanding requests client sends to server side? Something on the lines of IOMeter option "Number of outstanding requests". Thanks a lot!

Dear ALL, IHAC who would like to use Sun Fire X4500 to be the NFS server for the backend services, and would like to see the potential performance gain comparing to their existing systems. However the outputs of the I/O stress test with iozone show the mixed results as follows: * The read performance sharply degrades (almost down to 1/20, i.e from 2,000,000 down to 100,000) when the

Having done a current checkout, creating a new FS and running iozone [1] on it results in an oops [2]. remove_suid is called, accessing offset 14 of a NULL pointer. Let me know if you''d like me to test any fix, do further debugging or get more information. Thanks, Daniel --- [1] # mkfs.btrfs /dev/sda4 # mount /dev/sda4 /mnt /mnt# iozone -a . --- [2] [ 899.118926] BUG: unable to

Hi folks, I would appreciate it if someone can help me understand some weird results I''m seeing with trying to do performance testing with an SSD offloaded ZIL. I''m attempting to improve my infrastructure''s burstable write capacity (ZFS based WebDav servers), and naturally I''m looking at implementing SSD based ZIL devices. I have a test machine with the

5-nodes server and 1 node client are connected by gigabits Ethernet. #] iozone -r 32k -r 512k -s 8G KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread 8388608 32 10559 9792 62435 62260 8388608 512 63012 63409 63409 63138 It seems 32k write/rewrite performance are very

Dear support, I need to export gluster volume with LIO for a virtualization system. In this moment I have a very basic test configuration: 2x HP 380 G7(2 * Intel X5670 (Six core @ 2,93GHz), 72GB ram, hd RAID10 6xsas 10krpm, lan Intel X540 T2 10GB) directly interconnected. Gluster configuration is replica 2. OS is Fedora 27 For my tests I used dd and I found strange results. Apparently the

Interesting table Karan!, Could you please tell us how you did the benchmark? fio or iozone orsimilar? thanks Arman. On Wed, Sep 27, 2017 at 1:20 PM, Karan Sandha <ksandha at redhat.com> wrote: > Hi Collin, > > During our arbiter latency testing for completion of ops we found the > below results:- an arbiter node in another data centre and both the data > bricks in the

Why don?t you set LSI to passtrough mode and set one brick per HDD? Regards, Bartosz > Wiadomo?? napisana przez Brandon Bates <brandon at brandonbates.com> w dniu 27.10.2017, o godz. 08:47: > > Hi gluster users, > I've spent several months trying to get any kind of high performance out of gluster. The current XFS/samba array is used for video editing and 300-400MB/s for

It was simple emulation of network packets on the port of the server node using tc tool tc qdisc add dev <port> root netem delay <time>ms. The files were created using dd tool (in-built in linux) and mkdir. Post the IO's we verified with no pending heals. Thanks & Regards On Thu, Sep 28, 2017 at 2:06 PM, Arman Khalatyan <arm2arm at gmail.com> wrote: > Interesting

Hey guys, I got another "reboot crash" with gfapi and this time libvirt-3.2.1 (from cbs.centos.org). Is there anyone who can audit the libgfapi usage in libvirt? :-) WK: I use bonded 2x10Gbps and I do get crashes only in heavy I/O situations (fio). Upgrading system (apt-get dist-upgrade) was ok, so this might be even related to amount of IOPS. -ps On Sun, Sep 10, 2017 at 6:37 AM, WK

Apologies for the late reply. Further to this, if my Linux clients are connecting uing glusterfs-fuse and I have my volumes defined like this: dc1srv1:/gv_fileshare dc2srv1:/gv_fileshare dc1srv2:/gv_fileshare dc2srv2:/gv_fileshare (replica 2) How do I ensure that clients in dc1 prefer dc1srv1 and dc1srv2 while clients in dc2 prefer the dc2 servers? Is it simply a matter of ordering in

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I was just measuring the bitrates of a couple of codecs via iax. I'm getting much higher numbers than expected, so maybe I'm doing something wrong? Measured with iptraf, values displayed are: codec: measured bitrate (bitrate according codec definition) gsm: 52 kbps (13 kpbs) alaw: 154 kbps (?) speex: 57 kpbs (24 kpbs) Seems a little

Gandalf, SIGKILL (killall -9 glusterfsd) did not stop I/O after few minutes. SIGTERM on the other hand causes crash, but this time it is not read-only remount, but around 10 IOPS tops and 2 IOPS on average. -ps On Fri, Sep 8, 2017 at 1:56 PM, Diego Remolina <dijuremo at gmail.com> wrote: > I currently only have a Windows 2012 R2 server VM in testing on top of > the gluster storage,

Hi Brandon, Can you please turn OFF client-io-threads as we have seen degradation of performance with io-threads ON on sequential read/writes, random read/writes. Server event threads is 1 and client event threads are 2 by default. Thanks & Regards On Fri, Oct 27, 2017 at 12:17 PM, Brandon Bates <brandon at brandonbates.com> wrote: > Hi gluster users, > I've spent several