Raw logical volume with sticky bit on..,

[Anu Mathew]

Hi folks,

Greetings...

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]

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.

[Roger Baptiste]

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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
#KBAN00000674

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.

-raj