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Raw logical volume with sticky bit on..,

Anu Mathew
Valued Contributor

Raw logical volume with sticky bit on..,

Hi folks,


We have a raw logical volume used by Sybase as the tempdb device. The question in hand is, if I turn the sticky bit (chmod -t) on the raw logical volume, will that make a difference in their access speed?

AIX allows to create FS over ram by the mkramdisk command, HP-UX says nothing in that direction.

So I was wondering whether turning the sticky bit on would perform any wonders?

Thanks a lot in advance for your time, patience and expertise..!!

Anu Mathew
A. Clay Stephenson
Acclaimed Contributor

Re: Raw logical volume with sticky bit on..,

Hi Anu:

After looking over the system calls, it appears that setting the sticky bit will have no effect but you can certainly try it.
If it ain't broke, I can fix that.
Roger Baptiste
Honored Contributor

Re: Raw logical volume with sticky bit on..,


Sticky bit was useful during the days of low RAM space. I am not sure it will make any significant difference to your program. If the data is accesses frequently, the memory algorithms will keep it in the memory/swap.

There isa ramdisk option in HP, but HP does not Support it. Refer to document

If you are using a binary executable, then its sticky
bit can be turned on. But, i am not sure how much difference it would make.

Take it easy.