hi fred,
i believe i had solved this guest info failure issue.
i tried migrating other client vm(client2) to the disk where client1 located on and ran vmmark again, and the same error(guest info) occurred.
if i migrate the client1 to other disks/hosts then the client1 became normal to run vmmark.
Also did re-install the ESXi which client1 VM located on but this didn't help.
so my conclusion is, there were some kind of errors on the disk where client 1 is located on.
everything worked just fine after i use another disk datastore to place the client1 vm.
anyway, thanks!