Dear managers,
I have a AlphaServer 8200 running 4.0G with 6gig of ram with 4- 466mhz
cpu's. This server runs several instances of Oracle.
I am experience some performance slowness. Recently, I swapped a 1 gig
memory board for a 4gig (went from 3gig to 6gig) and didn't see any
appreciable performance improvement.I've experimented changing the vm
parameters ubc-maxpercent from 100 to 75 to 50 (at the next boot). Also
I've changed the ubc-borrowpercent to 10. My thoughts are that too much
memory is being used as disk cache and not enough for processes.
Not being anywhere near an expert, I was wondering if a couple of you
experts could point me in the right direction for diagnosing this.
Also, I read some references in the archives regarding a patch for the vm
subsystem in version 4.x. Could someone point me in the direction of where
to find patches for tru64?
Thanks in advance!
Jim
Here's a couple of the things I'm looking at.
# vmstat -P
Total Physical Memory = 6144.00 M
= 786432 pages
Physical Memory Clusters:
start_pfn end_pfn type size_pages / size_bytes
0 256 pal 256 / 2.00M
256 786348 os 786092 / 6141.34M
786348 786432 pal 84 / 672.00k
Physical Memory Use:
start_pfn end_pfn type size_pages / size_bytes
256 273 unixtable 17 / 136.00k
273 284 scavenge 11 / 88.00k
284 768 text 484 / 3.78M
768 873 data 105 / 840.00k
873 1088 bss 215 / 1.68M
1088 1229 kdebug 141 / 1.10M
1229 1234 cfgmgmt 5 / 40.00k
1234 1235 locks 1 / 8.00k
1235 2474 unixtable 1239 / 9.68M
2474 2487 pmap 13 / 104.00k
2487 15052 vmtables 12565 / 98.16M
15052 786348 managed 771296 / 6025.75M
============================
Total Physical Memory Use: 786092 / 6141.34M
Managed Pages Break Down:
free pages = 98
active pages = 52134
inactive pages = 104878
wired pages = 93592
ubc pages = 520996
==================
Total = 771698
WIRED Pages Break Down:
vm wired pages = 5130
ubc wired pages = 56121
meta data pages = 23582
malloc pages = 4892
contig pages = 134
user ptepages = 3218
kernel ptepages = 235
free ptepages = 7
==================
Total = 93319
#
#
# swapon -sv
Swap partition /dev/rz9b (default swap):
Allocated space: 131072 pages (1024MB)
In-use space: 50175 pages ( 38%)
Free space: 80897 pages ( 61%)
Swap partition /dev/rz21c:
Allocated space: 523755 pages (4091MB)
In-use space: 50416 pages ( 9%)
Free space: 473339 pages ( 90%)
Total swap allocation:
Allocated space: 654827 pages (5115MB)
Reserved space: 291198 pages ( 44%)
In-use space: 100591 pages ( 15%)
Available space: 363629 pages ( 55%)
#
James Kurtenbach
Clinical Reference Laboratory
8433 Quivira
Lenexa, KS 66215
(913) 492 3652 x 1651
kurtenbachj_at_crlcorp.com
Received on Mon Jan 28 2002 - 20:44:43 NZDT