search for: dbench

...d it had some nice comparisons of Xen performance vs a lot of other virtualization/container technologies: http://ols.fedoraproject.org/OLS/Reprints-2008/camargos-reprint.pdf As always with benchmarks, there are questions to ask and points to quibble, but overall Xen looks quite good... except on Dbench. Has anybody else run this benchmark on Xen and gotten better results? If not, any thoughts on why Xen (and all virt solutions) would do poorly on this benchmark? And whether Xen can/should be fixed? =================================== Thanks... for the memory I really could use more / My throu...

Hi I'm building new samba server (on Debian 6.0, software RAID10 2TB, Xeon CPU). Generally everything is working fine, so I have decided to run some stress tests. My choice was dbench. Old server is Debian 4.0 (samba 3.0.24, Athlon 3000+, one ATA 160GB disk). So run dbench 16 on both old and new server The results are strange old serwer: about 300MB/sek (dbench 3.0) and below are first seconds of dbench output > 16 1766 398.71 MB/sec warmup 1 sec > 16...

hi everybody would a tool such as dbench be a valid bechmark for gluster? and, most importantly, is there any formula to estimate raw fs to gluster performance ratio for different setups? for instance: having a replicated volume, two bricks, fuse mountpoint to volume via non-congested 1Gbps or even a volume on single brick with fuse cl...

Здравствуйте, xen-users. Just test domU IO perfomance: sda1 configure via phy:/dev/sdb1. Benchmark with dbench (dbench -D /usr/src -s 10 -t 120) - 102 Mb/s Native sistem (mount /dev/sdb1 /mnt && dbench -D /mnt -s 10 -t 120) - 140 Mb/s How i can speedup dbench? -- С уважением, Vitaliy mailto:vitaliy.okulov@gmail.com _______________________________________________ Xen-u...

Hi, I got problem while using smbtorture with the NBENCH test. The error happens on the "Mkdir" operation. I'm using the file "client.txt" from dbench-3.04. There are "Mkdir" operations, but in the file "torture.c", this operation is not handled. Few other operations are not handled. I did compare operations from run_netbench and those that are present in torture.c : dbench-3.04$ cat client.txt | awk {'print $1'} | so...

I try to use dbench to test HVM domain. Now I use the parameters as below: #./dbench -c client.txt 64 I am wondering if these parameters make sense. Anyone like to give me some suggestions? Thanks and best regards Alex shi _______________________________________________ Xen-devel mailing list Xen-devel@lists.x...

trying to check gluster performance with dbench I'm using a replica 3 with a bonded dual gigabit (balance-alb) on all servers and shard (64M) enabled. I'm unable to over 3MB (three) MB/s from *inside* VM, thus I think there isn't any small file issue, as from inside VM there isn't any metadata operation for gluster. Any advice...

Is there any piece of software that I can use to run between a client and a linux or windows server with a smb/cifs share that will test network speed, latency, sustained read/writes, multiple file create, read, write, close, etc.. etc.. over X period time? I'm testing a Centos server with samba and Windows 2k3/8 servers on the other end of a T1 connection and while I know the T1 bandwidth

I've had the chance to use a testsystem here and couldn't resist running a few benchmark programs on them: bonnie++, tiobench, dbench and a few generic ones (cp/rm/tar/etc...) on ext{234}, btrfs, jfs, ufs, xfs, zfs. All with standard mkfs/mount options and +noatime for all of them. Here are the results, no graphs - sorry: http://nerdbynature.de/benchmarks/v40z/2009-12-22/ Reiserfs is locking up during dbench, so I removed...

I've had the chance to use a testsystem here and couldn't resist running a few benchmark programs on them: bonnie++, tiobench, dbench and a few generic ones (cp/rm/tar/etc...) on ext{234}, btrfs, jfs, ufs, xfs, zfs. All with standard mkfs/mount options and +noatime for all of them. Here are the results, no graphs - sorry: http://nerdbynature.de/benchmarks/v40z/2009-12-22/ Reiserfs is locking up during dbench, so I removed...

Okay, after playing around a bit more, I'm getting two oopes in a row when running dbench 16 or dbench 32. Decoded, here they are: Assertion failure in unmap_underlying_metadata() at buffer.c:1530: "!buffer_jlist_eq(old_bh, 3)" kernel BUG at buffer.c:1530! Oops: Exception in kernel mode, sig: 4 NIP: C003BB34 XER: 00000000 LR: C003BB34 SP: CF881E00 REGS: cf881d50 TRAP: 0700 Us...

To test gluster's behavior under heavy load, I'm currently doing this on two machines sharing a common /mnt/gfs gluster mount: ssh bal-6.example.com apt-get install dbench && dbench 6 -t 60 -D /mnt/gfs ssh bal-7.example.com apt-get install dbench && dbench 6 -t 60 -D /mnt/gfs One of the processes usually dies pretty quickly like this: [608] open /mnt/gfs/clients/client5/~dmtmp/PWRPNT/PCBENCHM.PPT failed for handle 10003 (No such file or directory)...

I'm setting up a new file server and I just can't seem to get the expected performance from ext3. Unfortunately I'm stuck with ext3 due to my use of Lustre. So I'm hoping you dear readers will send me some tips for increasing ext3 performance. The system is using an Areca hardware raid controller with 5 7200RPM SATA disks. The RAID controller has 128MB of cache and the disks

...s xadd > > isn't (much) more expensive than an add + load. > > > > Result: > > setup: 16core (32 cpu +ht sandy bridge 8GB 16vcpu guest) > > benchmark overcommit %improve > > kernbench 1x -0.13 > > kernbench 2x 0.02 > > dbench 1x -1.77 > > dbench 2x -0.63 > > > > [Jeremy: hinted missing TICKET_LOCK_INC for kick] > > [Oleg: Moving slowpath flag to head, ticket_equals idea] > > [PeterZ: Detailed changelog] > > > > Reported-by: Sasha Levin <sasha.le...

...s xadd > > isn't (much) more expensive than an add + load. > > > > Result: > > setup: 16core (32 cpu +ht sandy bridge 8GB 16vcpu guest) > > benchmark overcommit %improve > > kernbench 1x -0.13 > > kernbench 2x 0.02 > > dbench 1x -1.77 > > dbench 2x -0.63 > > > > [Jeremy: hinted missing TICKET_LOCK_INC for kick] > > [Oleg: Moving slowpath flag to head, ticket_equals idea] > > [PeterZ: Detailed changelog] > > > > Reported-by: Sasha Levin <sasha.le...

...r" environment. OS Circular enables to boot OSes on Xen with a globalized virtual disk "HTTP-FUSE CLOOP". Benchmark: VMKNOPPIX includes benchmark softwares. Pi calculation for CPU benchmark http://h2np.net/pi/pi_quick_start.tar.gz dbench for IO benchmark tbench for Network benchmark Xengine for Graphic Benchmark OProfile: VMKNOPPIX includes xenoprifle to take profile of HVM Domain OS. Quick Boot: VMKNOPPIX is optimized by LCAT for fast CD boot. GRUB Menu: includes three items; Xen3.04-1(kernel 2.6.16.3...

...the 64k stripe of the raid 5 array. I ran hdparm -Tt on each individual drive as well as both of the raid arrays and included these numbers below. The numbers I got were pretty low for modern drives. Still, I don't even get read performance comparable to what hdparm -tT outputs. I also ran dbench and tbench. In both cases, I'm seeing numbers in the 3-4 MB/sec range. I only ran these benchmarks with one client becuase this server only sees one client. It is connected via gigabit ethernet to one other machine, which is the only client. For tbench, I ran the client on a seperate machine...

I''m using btrfs on two devices here, /usr on sda3 and /home on sdb (dm-crypt device on the whole disk). With btrfs-master the whole system hangs when accessing /home. The system hangs when I''m logging in into my account with KDE and is easily reproducible with dbench. On /usr the hangs appeared also but not as often as on the /home-device. I''ve tested on a third device with new created btrfs on top of dm-crypt, but wasn''t able to reproduce the hangs. The filesystems are created without metadata-mirroring (-m single). I''ve bisected...

...them, delete it now :-) - I have collected and classified some information of: http://home.earthlink.net/~rwhron/kernel/bigbox.html And I observed that ext3 performance is worse than previous kernels(2.4.19...). -ac and -aa are here only as reference. Complete information is in the upper URL. dbench: Performance is worse. dbench (Numbers are in MB/second, so bigger is better) ====== dbench-1.3 ext3 192 processes Average +/- MB/sec 2.4.20-rc1aa1 79.3 5.3 2.4.19 61.1 1.1 2.4.21-pre4-ac3 60.1 1.7 2...

...when I see such a gigantic performance difference then I think, I hope - it must be possible to help with a detective work to unravel any bottlenecks that may hamper glusterfs so badly that almost to a point that one wonders... what is the point. I did today such a oversimplified test, I used dbench on a raw xfs lvm raid0 four ssd pvs (no hardware raid) $ dbench -t 60 10 ... 8 of 10 processes prepared for launch?? 0 sec 10 of 10 processes prepared for launch?? 0 sec releasing clients ? 10???? 21573? 1339.94 MB/sec? warmup?? 1 sec? latency 35.500 ms ? 10???? 50505? 1448.58 MB/sec? warmup??...