(Including storage-discuss) I have 6 6140s with 96 disks. Out of which 64 of them are Seagate ST3300007FC (300GB - 10000 RPM FC-AL)
I created 16k seg size raid0 luns using single fcal disks. Then created a zpool with 8 4+1 raidz1 using those luns, out of single disks. Also set the zfs nocache flush to `1' to take advantage of the 2G NVRAM cache of the controllers. I am using one port per controller. Rest of them are down (not in use). Each controller port speed is 4Gbps. All luns have one controller as primary and second one as secondary I am getting only 125MB/s according to the zpool IO. I should get ~ 512MB/s per IO. Also is it possible to get 2GB/s IO by using the leftover ports of the controllers? Is it also possible to get 4GB/s IO by aggregating the controllers (w/ 8 ports totat)? On Nov 16, 2007 5:30 PM, Asif Iqbal <[EMAIL PROTECTED]> 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. > > 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 > -- Asif Iqbal PGP Key: 0xE62693C5 KeyServer: pgp.mit.edu _______________________________________________ perf-discuss mailing list perf-discuss@opensolaris.org
