Slow Performance with RCLI Scripts

[rhunter]

I've noticed that almost all RCLI scripts (ESX 4 or 3.5) take anywhere between 5-30 seconds to complete on the vMA. But when running directly on the console, the output is returned instantaneously. Has anyone had this problem? 5 seconds seems like its not such a big deal, but in reality, it can add hours to an automated test suite that uses the vMA to communicate to all ESX hosts.

[ibm3550-10]# time esxcfg-scsidevs -a

Adapter_ID Driver UID PCI Vendor & Model

vmhba0 aacraid pscsi.vmhba0 (2:0.0) ServeRAID 8k/8k-l8

vmhba1 qla2xxx fc.2000001b3200d037:2100001b3200d037 (7:0.0) ISP2432-based 4Gb Fibre Channel to PCI Express HBA

vmhba2 qla2xxx fc.2001001b3220d037:2101001b3220d037 (7:0.1) ISP2432-based 4Gb Fibre Channel to PCI Express HBA

vmhba3 ata_piix ide.vmhba3 (0:31.1) 631xESB/632xESB IDE Controller

vmhba32 ata_piix unknown.vmhba32 (0:31.1) 631xESB/632xESB IDE Controller

vmhba33 iscsi_vmk iqn.1998-01.com.vmware:ibm3550-10-39acade4 () iSCSI Software Adapter

real 0m7.522s

user 0m3.760s

sys 0m0.208s

Same command on the console:

# time esxcfg-scsidevs -a

vmhba0 aacraid link-n/a pscsi.vmhba0 (2:0.0) Adaptec ServeRAID 8k/8k-l8

vmhba1 qla2xxx link-up fc.2000001b3200d037:2100001b3200d037 (7:0.0) QLogic Corp ISP2432-based 4Gb Fibre Channel to PCI Express HBA

vmhba2 qla2xxx link-up fc.2001001b3220d037:2101001b3220d037 (7:0.1) QLogic Corp ISP2432-based 4Gb Fibre Channel to PCI Express HBA

vmhba3 ata_piix link-n/a ide.vmhba3 (0:31.1) Intel Corporation 631xESB/632xESB IDE Controller

vmhba32 ata_piix link-n/a ide.vmhba32 (0:31.1) Intel Corporation 631xESB/632xESB IDE Controller

vmhba33 iscsi_vmk link-n/a iqn.1998-01.com.vmware:ibm3550-10-39acade4() Software iSCSI

real 0m0.024s

user 0m0.000s

sys 0m0.020s

The protocol used is https@443. I've tried changing it to http@80 but this caused the following cryptic syntax error in one of the RCLI perl libs.

[ibm3550-rtp10]# time esxcfg-scsidevs -a --protocol http --portnumber 80

Can't call method "getChildrenByTagName" on an undefined value at /usr/lib/perl5/5.8.8/VMware/VICommon.pm line 1884.

real 0m1.685s

user 0m1.517s

sys 0m0.161s

i suspect the slowness is due to the authentication piece, has anyone figured out why?

Rob

[tren]

Hi Rob, the slowness is due to vCLI (RCLI) itsself, instead of vMA fastpass authentication. And you will see performance improvement in the next vMA/vCLI release.

[lamw]

Lets hope that is the case and we'll see an update soon and not have to wait for a major release of ESX(i) to get a new vMA

=========================================================================

William Lam

VMware vExpert 2009

VMware ESX/ESXi scripts and resources at:

VMware Code Central - Scripts/Sample code for Developers and Administrators

If you find this information useful, please award points for "correct" or "helpful".

[rhunter]

One can only hope

ty

-rob

[vmscrappy]

Do you have a date when the next version of the RCLI is coming out? The performance is painful. Also any idea why only https works and not http? I want to understand whether its a configuration issue on my end

esxcfg-scsidevs -l -protocol http

Error: Server version unavailable at 'http://dvsimenane06.sim.nane.netapp.com:443/sdk/vimService.wsdl'

[ferdis]

Some updates regarding performance of vMA?

Becouse its quite a reason for not using vMA.