Re: [perf-discuss] IO problem on production server

2008-03-26 Thread johansen
> If they cannot be optimized you can get about a 12% performance bump > using UFS + directio > > http://blogs.sun.com/realneel/ Go re-read that blog entry: If you do not penalize ZFS with double checksums, you can note that we are within 6% of our best UFS number. So 6% gives

Re: [perf-discuss] IO problem on production server

2008-03-26 Thread Andre Lue
At a glance the system is reading on avg 80Mb/s and is approx 73% busy, with no % wait. What is the max throughput of this capability of filesystem? Has it been reached? If the max throughput has been reached its time to probly take a look at your queries to see if they can be further optimiz