Performance issue.

[rajeshk]

Hi,

With the earlier mail i did not send the out of top command. I am sending top o/p with this attachement.

Please help me in this issue.
Whether we can go for Processor upgradation and what?

[Ravi_8]

Hi,

top command shows that user and system usage is less, you have some processes having top priority which are hogging your process, reducing priority of these process may help you. If you don't want to reduce then you can opt for additional CPU

[Michael Tully]

Hi,

Yes you could, but what type of server are you using now? This may determine whether to buy additional processors or new hardware. In regards to memory, the first place to free some of this up would be first off the dbc_max_pct kernel parameter. This is most likely set to 50%. The ideal level is around 300-500Mb.

Cheers
Michael

[T G Manikandan]

Rajesh,

I could see the UCM compilation list from the top command.

you seem to run bug UCM compilations which would consume a lot of memory plus processor time.

How many processors and memory you have in your server.

The total amount of TAT(turn around time) can be reduced by splitting the compilation files into different groups and running simultaneous compilations.but still they depend on the amount of memory and processors.

They consume a lot of memory and processor time.
The one think you definitely need to do is bring down the buffer cache on the system which is 50% of memory by default.

if your memory is 2Gb then you can bring down dbc_max_pct to 15 from 50

Revert

[rajeshk]

Hi Tully / Mainikandan

Right now in i have the following config.
HP 9000/L Class 2000/ 2GB Ram.
And the kernel parameter of
dbc_max_pct is set to 50.
What i can do?

Thanks & Regards,
K.Rajesh

[T G Manikandan]

yes if that is the case then 1Gb of memory is alloted to the buffer cache.
Reduce the parameter to 15 from 50 which is around 300MB.

how many processors you have ?

[rajeshk]

Hi Mani,

We have Dual processor.

Regards,
Krajesh

[T G Manikandan]

What is your Trun around time (TAR)for the total compilation process.

Definitely the hardware resource should be increased to decrease the TAT to some amount.

We have similar kind of setup and the compilations run for around 15-18 hours.
When I monitor things I find that the memory utilization is high and the processor utilization time too.

We run 5 to 6 compilation simultaenously.
You can monitor the usage of the resources using the Glance performance tool.

You definitely need to add another 2GB RAM and 2 more processors to bring down the TAT.
The compilation process grabs the memory and CPU.

Thanks

[rajeshk]

Hi,

I had changed the dbc_max_pct
parameter to 15, but still i am facing the same performance. Shall i go for 2 more processor and 2 GB of RAM upgradation.

And MAX how many processor can i upgrade??

Thanks