i have a query that when webvpn error-recovery is enabled , it will not save much in the usual crashinfo ; however when it is disabled , it defintely saves lot of details in the crashinfo .is that crashinfo meant for webvpn seperately from the usual crashinfo or it is a part of it ? I believe that webvpn crashinfo can be seen by the command"show crashinfo webvpn detail".Is this command an optional of show crashinfo (i.e may be probably it will give only webvpn related info ) .The reason why i am asking is i am unable to understand if a seperate crashinfo file is saved in flash for the webvpn errors if error-recovery disabled ?
Well, minidump is more information on the actual webvpn recovery. With crashes, normally we don't know the root cause yet or what triggers it.
As I advised earlier, eventhough if error recovery is enabled, if ASA itself couldn't recover it, it will still crash and produce crashinfo.
Further to your question, minidump and crashinfo are 2 different things. Minidump will provide information on the recovery, and crashinfo will provide pointer to which specific function crash.
Most customer does not like to have the ASA where it is actually at the crash stage. The webvpn error recovery feature is to minimise the ASA to crash if it's possible.
I don't think enabling error-recovery contributes to high CPU/memory utilization. It is actually recommended to enable the feature.