Hi,
One of our users reported that they thought that we were seeing sluggish performance on our ESXi, and that Vsphere Client was showing high write latency (vs. the read latency).
I ran esxtop, and got this:
7:40:50pm up 394 days 4:44, 279 worlds; CPU load average: 0.01, 0.01, 0.01
ADAPTR PATH NPTH CMDS/s READS/s WRITES/s MBREAD/s MBWRTN/s DAVG/cmd KAVG/cmd GAVG/cmd QAVG/cmd
vmhba0 - 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
vmhba1 - 1 5.40 0.00 5.40 0.00 0.03 0.07 0.01 0.08 0.00
vmhba32 - 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
vmhba33 - 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
vmhba34 - 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
vmhba35 - 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
vmhba36 - 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
From various googling, it seems like DAVG/cmd of less than 20 is "ok", so it seems like the esxtop output is not indicating any latency problem? The only thing that stood out to me was that the vmhba1 line showed some slightly higher values that the other lines.
Does that (the higher values for vmhba1 vs. vmhba0) indicate any kind of problem that might be showing up as higher write latency and/or slower performance?
Thanks,
Jim
