eqmemsize and lack of alias pdir entries

[MBolen]

I am troubleshooting an HP-UX 10.20 that has the following symptoms:

*End-users experience difficulties in establishing a telnet connection. The main app is through a telnet session. I have been able to duplicate this when the system has a normal/high load. Occasionally I will get in on first try, other times it will accept name/password then my client program just closes or says telnet disconnected. Lots of this message in the current syslog.log "telnetd[18010]: recv: Connection reset by peer"

*Various commands will core dump. I was running an instance of SAM and it core dumped. I found the corresponding pid in the current syslog "vmunix: Pid 529 got a bus error due to lack of alias pdir entries". There are tons of this type of error for various processes.

*Dmesg contained this
"vmunix: Equivalently mapped reserve pool exhausted
vmunix: Overall application performance may be improved
by increasing the "eqmemsize" tunable parameter (currently set to "90")"

I researched this kernel parameter "eqmemsize" and found the default to be 15. I found I need to obtain kmeminfo and run it to help ascertain the value to change it to. I am looking for some input in this area. I need the binary for kmeminfo.

I found and ran a memory utility from ITRC and it showed this output:

$ ./hpuxmeminfo
Memory Stat total used avail %used
physical 3840.0 3188.3 651.7 83%
active virtual 669.5 62.8 606.7 9%
active real 958.9 85.3 873.5 9%
memory swap 2879.7 1899.3 980.3 66%
device swap 1024.0 1022.5 1.5 100%

Please advise.
-Michael Bolen

[BUPA IS]

Michael,
I think you may have run out of swap space. You only have 1Gb of device swap and 3Gb of memory. For this size of machine I would suggest 4 to 6Gb depending on need. You should at least match the size of your physical memory .

Mike.