Questions tagged [iozone]
The iozone tag has no usage guidance.
8
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kvm virtio disk performance scales badly with iozone workload
I'm conducting a number of tests in order understand why some of our workloads generate a really poor "user experience" with db related activities.
We have a dl160g9 server with a B140i controller (4 ...
5
votes
1
answer
511
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Root-causing vastly different performance on iozone O_SYNC benchmark for two HDD manufacturers
I have two servers A and B with the following configuration:
A: 4TB HDDs, with RAID 1 (MegaRAID SAS 2008), 128MB cache, no BBU, write-through mode, 7.2k RPM, manufacturer A.
B: 1.5TB HDDs, with RAID ...
0
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1
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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 ...
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1
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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 ...
3
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2
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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
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2
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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
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2
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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
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2
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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 ...