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1answer
38 views

How to specify the path which is to be tested using iozone?

I have a freebsd install which has ufs filesystem. Inside freebsd i have created a zpool in raidz1. Now i want to perform iozone test on zfs but i am not able to understand how to specify that iozone ...
-1
votes
1answer
401 views

Benchmarking GlusterFS & NFS on AWS using iozone and dd gives different results

I have tried benchmarking GlusterFS vs NFS on Amazon Web Services (AWS) using a m1.medium sized EC2 instance. We use the AWS EBS as the block store, with a XFS file system. Running Ubuntu 12.04 ...
1
vote
1answer
789 views

What does “reclen” (record length) in iozone benchmark mean?

What does the "reclen" field mean? Googling showed that "reclen" = "record length", but I still don't know what "record length" means. KB reclen write rewrite read reread ...
2
votes
2answers
571 views

Iozone is producing false results

I am not sure why this is happening but these are totally false results: Children see throughput for 15 re-readers = 12793134.62 KB/sec Parent sees throughput for 15 re-readers = ...
1
vote
2answers
638 views

Iozone: sensible settings for a server with lots of RAM

I have just acquired a server with: 2x quadcore Xeons 48G ECC RAM 5x 160GB SSDs on an LSI 9260-8i Before deploying the target platform, I'd like to collect as much benchmark data as possible, ...
1
vote
2answers
197 views

Benchmarking disk performance on large-memory systems

I need to produce some comparative filesystem performance metrics for our virtual hosting environment. Specifically, I need to look at the difference between NFS and iSCSI and at the performance ...