On Nov 19, 2007 11:47 PM, Richard Elling <[EMAIL PROTECTED]> wrote: > Asif Iqbal wrote: > > I have the following layout > > > > A 490 with 8 1.8Ghz and 16G mem. 6 6140s with 2 FC controllers using > > A1 anfd B1 controller port 4Gbps speed. > > Each controller has 2G NVRAM > > > > On 6140s I setup raid0 lun per SAS disks with 16K segment size. > > > > On 490 I created a zpool with 8 4+1 raidz1s > > > > I am getting zpool IO of only 125MB/s with zfs:zfs_nocacheflush = 1 in > > /etc/system > > > > Is there a way I can improve the performance. I like to get 1GB/sec IO. > > > > I don't believe a V490 is capable of driving 1 GByte/s of I/O.
Well I am getting ~190MB/s right now. I sure not hitting any where close to that ceiling > The V490 has two schizos and the schizo is not a full speed > bridge. For more information see Section 1.2 of: > http://www.sun.com/processors/manuals/External_Schizo_PRM.pdf > > -- richard > > > Currently each lun is setup as primary A1 and secondary B1 or vice versa > > > > I also have write cache eanble according to CAM > > > > > > -- Asif Iqbal PGP Key: 0xE62693C5 KeyServer: pgp.mit.edu _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
