I know these are probably simple questions, but I seem to be unable to wrap
my head around these.
I have been investigating complaints of "slowness" on a ES40 (3CPU, 2GB RAM,
11GB swap) Tru64 5.0a system. I have been attempting to use the information
contained in the "System Configuration and Tuning" book to assist. Because
disk and processor don't seem overloaded, we are suspecting a memory
shortage. I think I understand the difference between paging and swapping,
but I am not sure how to tell (aside from ps aux and look for "W" in state)
if the system is actually swapping or not? Also, the manual refers to
"excessive". What is excessive? The following is selected information from
a vmstat 300:
procs memory pages intr cpu
r w u act free wire fault cow zero react pin pout in sy cs us sy
id
4 339 42 272K 921 39K 36490 1740 19K 2134 5040 116 193 3K 1K 6 4
91
4 339 43 271K 1002 38K 20760 797 11K 10 1299 18 260 5K 2K 12 4
84
4 343 41 273K 942 39K 34916 2028 26K 5 3083 0 276 5K 2K 13 4
83
5 341 41 284K 1013 38K 29306 1096 14K 75 3338 10 219 6K 2K 16 5
79
6 343 40 266K 1022 39K 45211 1158 39K 21 2172 4 157 8K 1K 24 5
71
4 345 40 249K 12K 38K 40086 1306 21K 75701 15K 3891 217 8K 1K 25 6
69
4 344 41 260K 976 38K 24567 284 16K 7278 6176 806 203 8K 1K 12 3
84
I suspect the last couple of lines could be defined as "excessive"? Any
suggestions on further pinpointing an actual issue (aside from getting more
information than "its slow")?
Thanks
Bill Skulley
DynCorp I&ET
Received on Wed May 16 2001 - 21:09:10 NZST