similar to: Occasional loss of connection between Windows clients and Samba under stress

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

It is sequential write with file size 2GB. Same behavior observed with 3.11.3 too. On Thu, Sep 7, 2017 at 12:43 AM, Shyam Ranganathan <srangana at redhat.com> wrote: > On 09/06/2017 05:48 AM, Serkan ?oban wrote: >> >> Hi, >> >> Just do some ingestion tests to 40 node 16+4EC 19PB single volume. >> 100 clients are writing each has 5 threads total 500 threads.

Hi everybody, I have several VMs running on Xenserver 6.5 I have 2 samba servers (1 DC & 1 Fileserver). They are both running Debian Linux 8.2 Jessie. I'm using the samba debian package (4.1.17) My VM has 8G RAM and 4 vCPU How can i test if the performances are quite good or not? with reading/writing Could I have better performance with the latest samba release? thanks Pierre --

On 09/06/2017 05:48 AM, Serkan ?oban wrote: > Hi, > > Just do some ingestion tests to 40 node 16+4EC 19PB single volume. > 100 clients are writing each has 5 threads total 500 threads. > With 3.10.5 each server has 800MB/s network traffic, cluster total is 32GB/s > With 3.12.0 each server has 200MB/s network traffic, cluster total is 8GB/s > I did not change any volume

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

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!

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 We are currently testing our product using KVM as the hypervisor. We are not using KVM as a bare-metal hypervisor. We use it on top of a RHEL installation. So basically RHEL acts as our host and using KVM we deploy guests on this system. We have all along tested and shipped our application image for VMware ESXi installations , So this it the first time we are trying our application

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

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

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

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 at least 4 clients is minimum (currently a single windows client gets at least 700/700 for a single client over samba, peaking to 950 at times using blackmagic speed test). Gluster has been getting me as low as

Hello? We have used glusterfs3.4 with the lasted samba-glusterfs-vfs lib to test samba performance in windows client. two glusterfs server nodes export share with name of "gvol": hardwares: brick use a raid 5 logic disk with 8 * 2T SATA HDDs 10G network connection one linux client mount the "gvol" with cmd: [root at localhost current]# mount.cifs //192.168.100.133/gvol

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

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

On 09/17/2018 04:59 PM, Lukas Hejtmanek wrote: > Hello, > > so the current domain configuration: > <cpu mode='host-passthrough'><topology sockets='8' cores='4' threads='1'/><numa><cell cpus='0-3' memory='62000000' /><cell cpus='4-7' memory='62000000' /><cell cpus='8-11'

I've been reading this group for a while and I've noticed a variety of comments regarding running OCFS on top of path-management packages such as EMC's Powerpath, and it brought to mind a problem I've been having. I'm currently testing a six-node cluster connected to a Hitachi 9570V SAN storage array, using OCFS 1.0.12. I have six LUNs presented to the hosts using HDLM,

I have a system that I'm vetting as a NAS server. It has a 2.0TB XFS filesystem mounted on /storage and I'm doing benchmarks using nfs3, nfs4, and samba. I'm testing via iozone by mounting the filesystem from my "nas client" box and then running iozone on the mounted filesystem. NFS seems pretty fast - ie, several orders of magnitude faster than samba, and I'm

Dear list, I thought I'd just share my experiences with this 3Ware card, and see if anyone might have any suggestions. System: Supermicro H8DA8 with 2 x Opteron 250 2.4GHz and 4GB RAM installed. 9550SX-8LP hosting 4x Seagate ST3250820SV 250GB in a RAID 1 plus 2 hot spare config. The array is properly initialized, write cache is on, as is queueing (and supported by the drives). StoreSave

Hi, Just do some ingestion tests to 40 node 16+4EC 19PB single volume. 100 clients are writing each has 5 threads total 500 threads. With 3.10.5 each server has 800MB/s network traffic, cluster total is 32GB/s With 3.12.0 each server has 200MB/s network traffic, cluster total is 8GB/s I did not change any volume options in both configs. Any thoughts? Serkan