Dear all,
I have been using Postgres but I am not an expert on the
subject.
I would be very grateful if someone could point to the right
direction with regards this problem.
We have a web application written in JAVA, using jaboss as a
servlet.
There are 100 connections open to the database server at any
given time, apparently using hibernate.
We are using Postgres 8.2.4 compiled
The database size is 155GB
We have 8GB of RAM
300GB Hard disk Raid1
Everything is within a single Volume
Today the load average was as high as 15
Top result:
Tasks: 169 total, 30 running, 139
sleeping, 0 stopped, 0 zombie
Cpu(s): 69.6% us, 5.9% sy, 0.0% ni, 0.0%
id, 24.3% wa, 0.2% hi, 0.0% si
Mem: 8251404k total, 8228428k used,
22976k free, 16296k buffers
Swap: 1052248k total, 47176k
used, 1005072k free, 6664308k cached
I am quite sure:
1 – we do not have enough memory
2 – our disk and RAID array setup is not good enough
3 – Postgres is not setup correctly and uses an older
version
4 – It is using Slony and replication which does not
work.
I would like if anyone could help with the following:
1 – Ways of proving my thoughts
2 – Gather data evidence to prove
I don’t have slow query check enabled, will do after
Christmas, but how can I use it to show things are not good?
If anyone could help me it would be very much appreciated.
If you need more info or details, I am very happy to give
more.
Thank you very much
Best regards
Renato Oliveira
e-mail: renato.oliveira@xxxxxxxxxxx
Company registered in England, registration number 658133
Registered office address:
29 Station Road,
Shepreth,
CAMBS SG8 6GB
UK
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