Hi All,

I am using Dell powreredge host with the configuration of 128G of RAM.
On this system I have installed the linus OS without any SWAP memoey.
running database on it(no swap mem has configured).

I have monitored the host and found its not using more then 30%(30-35g) of memory... but the system load is always showing high.

Requesting you to kindly suggest if its need swap to be enable on the host.
and also is there any way to check if my system is asking for swap mem to be enabled.

Regards,
Sudhanshu

In general a machine doesn't need swap, especially if that machine has a large amount of memory. There are exceptions; Some programs require swap, even if the amount of memory large. Most, if not all of these exceptions check for the existence of swap during installation.

The load average on a machine indicates CPU usage. You mention a high load average, what is high? Roughly speaking your load shouldn't be higher than the number of CPU/Cores.

Have a look at these articles:
- Understanding Linux CPU Load
- Examining Load Average
- Understanding Linux Load Average (1)

I'm assuming you looked at the output of the top command, for a more detailed look you might want to have a look at sar:
- The Sysadmin's Toolbox: sar
- 10 Useful Sar (Sysstat) Examples

Hmmm - this is Unix mentality. Linux measures loadavg differently.

Whilst it is certainly true that for a system with all processors 100% busy, this is rarely the case. Linux includes processes in uninterruptible sleep in the loadavg, and this can significantly increase the loadavg without much CPU usage.
Try this and post the output

I might have taken a bit of a short-cut to keep it "simple", luckily I used roughly My comments are based on Linux system, though.

Anyway, the articles I linked to are more in-depth an might be worth while reading by the OP.