topic Re: maxswapchunks in Operating System - HP-UX

maxswapchunks

spearsy — Mon, 21 Nov 2005 05:38:06 GMT

quick question for a monday morning

increasing maxswapchunks = 1/2 x memory

can anyone tell me what the effects would be by oversizing the maxswapchunks say 3,4,5 x memory there must be a reason it has always been set to 1/2 x memory ???

rgds
steven spear

Re: maxswapchunks

RAC_1 — Mon, 21 Nov 2005 05:42:52 GMT

The swap chunk size is 2MB. That is why it is set at 1/2 of total swap space to be configured. you can set it little high, so that you do not need to reboot, if you add swap space later on.

The only thing I can think of is kernel memeory will be little higher in that case.

Re: maxswapchunks

Stanimir — Mon, 21 Nov 2005 05:52:46 GMT

Max Swap Space = maxswapchunks * 1024 * swchunk (typically 2048).
According this formula you could limit your
swap and have a problem. :)

Increasing "maxswapchunks" I thing - nothing would happened.

Re: maxswapchunks

Patrick Wallek — Mon, 21 Nov 2005 09:17:18 GMT

I would go ahead and increase maxswapchunks to its maximum value of 16384.

It will not hurt anything. It will not take up any additional resources. The benefit is that if you have to add more swap later, you won't have to rebuild the kernel and reboot the system. You can just do a 'swapon' and you new swap will be active.