https://sigtar.com/tags/write/ Recent content in Write on sigtar.com Hugo en-nz Fri, 07 May 2010 00:00:00 +1200 https://sigtar.com/2010/05/07/vmware-measuring-iscsi-write-performance/ Fri, 07 May 2010 00:00:00 +1200 https://sigtar.com/2010/05/07/vmware-measuring-iscsi-write-performance/ <p>I picked this trick up off vmware support. If you&rsquo;ve got your iscsi all setup you can drop to the shell (either ssh or console) and do this to measure your average write throughput.</p> <p><strong>time vmkfstools -c 10G /vmfs/volumes/san_vmfs/my_vm/fat_disk.vmdk -d eagerzeroedthick</strong></p> <p>Try larger a larger disk if this is too quick (free space permitting)</p> <p>Essentially this will initiate the host to create a fat disk in the location above. You will then get a time recorded on how long it takes to execute this command. Then you can use your maths skill to work out the transfer rate&hellip;</p>