Re: [zfs-discuss] ZFS and small block random I/O

2008-02-19 Thread Richard Elling
Start with the man page for zfs(1m), specifically, the recordsize parameter. More discussion is available on the Solaris Internals ZFS Best Practices Guide. http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide -- richard Marcel Guerin wrote: > > Hi, > > We’re doing some benchm

[zfs-discuss] ZFS and small block random I/O

2008-02-19 Thread Marcel Guerin
Hi, We're doing some benchmarking at a customer (using IOzone) and for some specific small block random tests, performance of their X4500 is very poor (~1.2 MB/s aggregate throughput for a 5+1 RAIDZ). Specifically, the test is the IOzone multithreaded throughput test of an 8GB file size and 8K