postgresql on domU issue

postgresql on domU issue

[Ted Kaczmarek]

I am seeing out of memory issues on a domU running OpenNMS, which is
java based, with tomcat4 interface and postgresql back end. Postgres
depends on the OS to handle most if the memory caching AFAIK. 

domU - 710 megs, using 1 disk partition for "/" and 1 for "swap"
Centos 4.1
postgresql-server-7.4.8-1.RHEL4.1

Postgres error

Free pages:        3740kB (0kB HighMem)
Active:92154 inactive:79697 dirty:0 writeback:0 unstable:0 free:935
slab:1709 mapped:167286 pagetables:756
DMA free:3740kB min:3396kB low:4244kB high:5092kB active:368616kB
inactive:318788kB present:720896kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0
Normal free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB
present:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0
HighMem free:0kB min:128kB low:160kB high:192kB active:0kB inactive:0kB
present:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0
DMA: 13*4kB 35*8kB 7*16kB 1*32kB 1*64kB 1*128kB 0*256kB 0*512kB 1*1024kB
1*2048kB 0*4096kB = 3740kB
Normal: empty
HighMem: empty
Swap cache: add 331852, delete 331838, find 38182/43573, race 0+10
Free swap  = 0kB
Total swap = 1124508kB
Out of Memory: Killed process 5051 (postmaster).

Regards,
Ted