ramdisk space

Had some issues with ramdisk in the past, generally found the issue,

but currently have one ESX 5.1 generating a lot of alerts in Vcenter concerning

ramdisk root is full. There seems to be a patch for this, as our ramdisk does not

appear to be full.

but checking ramdisk on one server it shows

Ramdisk                   Size      Used Available Use% Mounted on

root                       32M       19M       12M  61% --

etc                        28M      248K       27M   0% --

tmp                       192M        4K      191M   0% --

another shows 71% utilization, when I check a 5.0 server I show ramdisk at about 6%.

I have spent a considerable amount of time trying to find where I am losing the space, but no luck.

I working on getting a maintenance window to reboot it also.

But before beating my head too much, was is a reasonable amount of utilized space for the root on ramdisk?

Thanks