Is my storage having performance issue? (see screenshot of hdparm & iostat)
Hi Storage experts,
My vms on Xenserver are very slow on booting up, all of this vm's are hosted on the storage which is QNAP TS809-U RP.
Question is, am I having some storage performance issues with I/O judging from the hdfarm & iostat below?
hdfarm from XenServer to Storage
iostat from the QNAP shell/terminal
My vms on Xenserver are very slow on booting up, all of this vm's are hosted on the storage which is QNAP TS809-U RP.
Question is, am I having some storage performance issues with I/O judging from the hdfarm & iostat below?
hdfarm from XenServer to Storage
iostat from the QNAP shell/terminal
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Hmmm.
Need to check your implementation of iostat. According to man pages, -d and -c are exclusive commands - that is; you run either -d or -c, not both at the same time.
Information is a bit thin on how iostat is implemented in QNAP devices - wait is not a usual value - it sgould be await (average wait)
Need to check your implementation of iostat. According to man pages, -d and -c are exclusive commands - that is; you run either -d or -c, not both at the same time.
Information is a bit thin on how iostat is implemented in QNAP devices - wait is not a usual value - it sgould be await (average wait)
The Solaris implementation of iostat has wait, and that shows queue depth rather than wait time.
ASKER
Hi meyersd,
Checking the isotat option see below
So do you think I am having preformance issue with my Storage?
Anyone?
Checking the isotat option see below
So do you think I am having preformance issue with my Storage?
Anyone?
What sort of disks? 2TB SATA?
ASKER
.
hdparm numbers look a bit ordinary.
How is the storage configured? Is it two 3 disk RAID 5 sets? How many VMs are you running? What are the disk drives?