I have a T2000 with a dual port 4gb hba (QLE2462) and a 3510FC with one controller 2gb/s attached to it. I am running sol 10 u3 .
every time I change the recordsize of the zfs fs the disk IO improves (doubles) and stay like that for about 5 to 6 hrs. Then it dies down. I increase the recordsize again and performace jumps back to double again. The main app is oracle database with 8K blocksize I changed the zfs recordsize to from 8K to 16K and then 32K every 8 hrs, which improved the disk IO I wonder if there is any other zfs parameter that I can change to keep the performance good, since I am running older sol 10. I have single disk luns on the 3510 with mpxio enabled on T2000. each disk has two paths (primary,primary) online per luxadm. zpool iostat 10 gives me only about 6MB max write bandwidth. I was hoping it to lot higher. the battery on 3510 is expired and waiting for a replacement. besides replacing the battery, what else can I do to improve the write bandwidth? does the battery expire directly affecting the oracle's disk IO? I thought oracle will just write to zfs and done. and zpool will then write-through to controller instead of write-back since no battery. sun storage guys found no other issue besides the battery. should disabling zil improve performance? I won't try it until we get the battery so not to risk data loss during outage. -- Asif Iqbal PGP Key: 0xE62693C5 KeyServer: pgp.mit.edu A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
