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We have multicores server hosted by VMWare ESXi with RAID 5. We can't figure out why our software operates so slow with it. How can we measure real VMWare performance? Is there well-known test utility for that? Many of alike test utilities refuse to work with VMWare


Thank you everybody who replied! It looks like configuration is ok - at least 4Gb RAM is free. Lots of HDD space - but when it's come to run any real world application like Microsoft Word or more complicated - it opens even slower than my desktop. I guess there is something completely wrong with VM Ware configuration though syntetic tests demonstrates that everyhting is ok

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What benchmarking tools have you tried? Most shouldn't care what they're running on. –  ceejayoz Dec 14 '12 at 19:46
I'd be interested as well. My users suffer from occasional keyboard delay up to seconds, while Windows task manager load as well as VMwrae LAN, CPU, RAM, disk stats hint that the system is all fine –  Hagen von Eitzen Dec 14 '12 at 20:01
not enough info, what are the specs on the hosts (esxi version etc) how many vm's what vmtools version .... –  tony roth Dec 14 '12 at 20:16
Not to mention, guest configuration - how much memory assigned to guests, how many disks in the RAID? guest workload? Read/write IOPS on the guests, how many vCPU's assigned to the guest? How is your networking configured? How many NIC's? is this local storage? iSCSI storage? fiber storage? and finally - define "slow" –  Rex Dec 14 '12 at 22:39
your update still does not give enough info. 4GB RAM free where? on the guest? on the host? how much RAM is on the host? how many guests do you have running? How much RAM is assigned to each guest? "lots of HDD space" where? on the host? on the guest? what kind of storage? Are these thin provisioned VMDK's? are the LUN's themselves thin provisioned? What kind of synthetic testing have you done? –  Rex Dec 18 '12 at 16:20

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