[diagnostic] cache_lock: blocked on... extremely urgent

[Matthew Dillon]

:This is off a mailserver, these came up when i tried to cd to cur/tmp 
:directories inside a maildir. There are process in ps all over the place 
:and performance is terrible. The machine is running 2 fujitsu scsi 
:drives (new but factory repaired and running in raid 1) on an older 
:scsi/raid controller. This is the 2nd time this happend in the last 
:week. Should i rather suspect a dying controller or the drives?
:
:Thanks,
:Petr

    Is access completely locked up or just really really slow ?  Can
    you kill the postfix processes?  Do they go away or all they all
    hung on disk I/O ?

					-Matt
					Matthew Dillon 
					<dillon at backplane.com>