Hi to all .. This article were my guideline in my first implementation :
http://constantin.glez.de/blog/2010/04/ten-ways-easily-improve-oracle-solaris-zfs-filesystem-performance My gess, you need more RAM . In your description of the system, you have a lot of processing power, but very litle RAM ... Sata controler can impact that too . Fábio Rabelo 2013/9/10 Muhammad Yousuf Khan <sir...@gmail.com>: > i am using Raidz2 with 4 drives. > > i am using dell 490 with 2x3.0 Xeon processors. > 12 GB RAM. > > > 1 40gb HD for omni OS > 4 different size disks for Raidz2. set of 2x160gb and 2x250 gb. > every thing is working well except VM file transfer performance. hosted on > NFS. > > when i SCP from omniOS to another linux server it copy > > root@omni:/acipool# scp test.tmp root@10.x.x.13:/ > The authenticity of host '10.x.x.13 (10.xx.xx.13)' can't be established. > RSA key fingerprint is da:x:xx:xx:8f:b1:ed:d9:f4:dd:e3xxx:21:5f:01:23. > Are you sure you want to continue connecting (yes/no)? yes > Warning: Permanently added '10.xx.xx.13' (RSA) to the list of known hosts. > root@10.x.x.13's password: > test.tmp 100% > |********************************************************************************************| > 5120 MB 07:37 > > > which i think is fine due to Raidz and 2 parities. > > however on VM hosted on NFS taking too much time. > > a file of 500 MB copying from NFS to my desktops took 20 minutes. > > but file from my desktop to NFS is normal. for example a file of 500Mb > taking less then a minute to copy. > > but same file when i try to copy from NFS to desktop some time it shows 100 > plus minutes and dynamically changing time but eventually it is taking too > much time. > > some time copying from NFS is a bit quicker and some time dead slow. > > one thing i have also noticed that once the copy is dead slow it suddenly > starts copying the data very fast and it happens for few seconds and then > again dead slow. > > > any idea what is happening what mistake i am doing here ? > > any advice would be highly appreciated. > > i will share my further testing later. > > Thanks, > > Yousuf > > > > > > > > > _______________________________________________ > OmniOS-discuss mailing list > OmniOS-discuss@lists.omniti.com > http://lists.omniti.com/mailman/listinfo/omnios-discuss > _______________________________________________ OmniOS-discuss mailing list OmniOS-discuss@lists.omniti.com http://lists.omniti.com/mailman/listinfo/omnios-discuss