Performance issues HP Microserver gen8 and VMWARE EXSI 6.5

upgraded ESXI to 6.5 U1 which is version 6.5.0 build 5969303

You are running HPE Customized Image ESXi 6.5.0 version 650.10.1.0.47 released on July 2017 and based on ESXi 6.5.0 Vmkernel Release Build 5310538

unfortunately the HP Microserserver Gen8 is than running with: HPE_bootbank_scsi-hpvsa_5.5.0.102-1OEM.550.0.0.1331820

As I was (and still am but as of writing I am in maintenance mode) seeing spikes in my CPU usages. It might be caused by the bad performance

checking with:
cd /vmfs/volumes/datastore1
time dd if=/dev/zero of=tempfile bs=8k count=1000000

It took a very long time to see some output. (Very long time!)

than I tried to downgrade to the hpvsa-5.5.0-88.zip driver

guidelines:

  1. enter maintenance mode
  2. I do a reboot, but you can do it probably without
  3. copy the downloaded driver to /tmp/ and run the following command
  4. esxcli software vib install -d /tmp/hpvsa-5.5.0-88.zip
  5. the old driver will be removed and the 5.5.0-88 driver installed
  6. Now important: if you do reboot this way: you will not see your DataStores anymore, only your NFS datastores (in my situation) this is caused by VMWARE ESXI as it will be using vmw_ahci driver for the datastore.
  7. so disable the usage of this ‘default’ driver: esxcli system module set –enabled=false –module=vmw_ahci
  8. now you can reboot and your device will be using the 5.5.0-88 driver
  9. you can see this by using; cat /proc/driver/hpvsa/hpvsa0

the speed should have been returned.

 

2 comments

  1. Hi, great article – just one issue:
    esxcli system module set –enabled=false –module=vmw_ahci
    Should be:
    esxcli system module set –enabled=false –module=vmw_ahci
    (or: esxcli system module set -e=false -m=vmw_ahci )

    I guess some autoformatter on your blog converted the double dash to a long dash.

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