Hello guys,
I have two servers performing the same disk operations. I believe one server is having a disk's impending failure however I have no hard evidence to prove it. This is a pair of Netra 210's with 2 drives in a hardware raid mirror (LSI raid controller).
How can I benchmark the performance of a particular software not complete system? I know various tools are available for system benchmarking.
We created a monitoring report for IOPs on performance counters using Disk reads/sec and Disk writes/sec on four servers (physical boxes, no virtualization) that have 4x 15k 146GB SAS drives in RAID10 per server, set to check and record data every 1 second, and logged for 24 hours before stopping reports.
These are the results we got:
Server1 Maximum disk reads/sec: 4249.437 Maximum disk writ
How To Benchmark Your System (CPU, File IO, MySQL) With sysbench
sysbench
is a benchmark suite which allows you to quickly get an impression
about system performance which is important if you plan to run a
database under intensive load. This article explains how to benchmark
your CPU, file IO, and MySQL performance with sysbench.
I read in one of the VMware KB article says that snapshots will directly proportional to VM performance.
But my team keep asking me how snapshots can affect performance.
I would like to give them solid reason behind the statement that snapshots are performance killers.
Can any one explain a little bit theory behind why actually snapshots are affecting the performance?
Published at LXer:
Performance of your database server is directly tied to how well the underlying operating system is working, and there the performance is driven by the hardware you're using.
I wanted to do some (very rough) comparisons between different computers, seeing the relative compute performance of laptops and cloud machines (AWS EC2, rackspace, etc.).
I wanted something extremely easy and quick to run, and just wanted a rough benchmark of computation performance. Not testing parallelism, disk access, etc.
Metadata performance is perhaps the most neglected facet of storage performance. In previous articles we've looked into how best to improve metadata performance without too much luck. Could that be a function of the benchmark? Hmmm...
Metadata performance is perhaps the most neglected facet of storage performance. In previous articles we've looked into how best to improve metadata performance without too much luck. Could that be a function of the benchmark? Hmmm...