Re: [zfs-discuss] ZFS Performance on SATA Deive

2010-03-22 Thread Kashif Mumtaz
hi, Thanks for all the reply. I have found the real culprit. Hard disk was faulty. I changed the hard disk.And now ZFS performance is much better. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org htt

Re: [zfs-discuss] ZFS Performance on SATA Deive

2010-03-18 Thread Kashif Mumtaz
Hi, Thanks for your reply BOTH are Sun Sparc T1000 machines. Hard disk 1 TB sata on both ZFS system Memory32 GB , Processor 1GH 6 core os Solaris 10 10/09 s10s_u8wos_08a SPARC PatchCluster level 142900-02(Dec 09 ) UFS machine Hard disk 1 TB sata Memory 16 GB Processor Processor 1GH 6 c

Re: [zfs-discuss] ZFS Performance on SATA Deive

2010-03-18 Thread Kashif Mumtaz
Hi, I did another test on both machine. And write performance on ZFS extraordinary slow. I did the following test on both machines For write time dd if=/dev/zero of=test.dbf bs=8k count=1048576 For read time dd if=/testpool/test.dbf of=/dev/null bs=8k ZFS machine has 32GB memory UFS machine

[zfs-discuss] ZFS Performance on SATA Deive

2010-03-17 Thread Kashif Mumtaz
hi , I'm using sun T1000 machines one machine is installed Solaris 10 with UFS and other system with ZFS file system , ZFS machine is performing slow . Running following commands on both systems shows Disk get busy immediatly to 100% ZFS MACHINE find / > /d

[zfs-discuss] ZFS error while enabling DIRECT_IO for the DB chunks

2010-03-11 Thread Kashif Mumtaz
Hi, We are using Solaris 10 update 7 with ZFS file system.And using the machine for informix db. Solaris Patch level Generic_142900-02 (Dec 09 PatchCluster release) Informix DB version 11.5FC6 We are facing an issue while enabling DIRECT_IO for the DB chunks. The error message which appears