rb@ccivax.UUCP (rex ballard) (03/01/86)
Does anybody know of a good RAM CACHE program or algorythm? Asynch read-ahead, and write would be nice, along with demand based purging. Such things are available for other machines, and appearantly save you some of the grief of powering down the ram disk before you've put it back on floppy. I've also heard they're real nice with hard drives. I know very little about them exept that they make a machine look like it's running faster. Is this an OS/Driver hack?
slavenbg@prle2.UUCP (Gert Slavenburg) (03/13/86)
Can anyone tell me what exactly a RAM cache is. I am the person who originally made the 520ST RAMdisk, and am thinking about also making a RAMcache if such proves usefull. However, I have never seen one (though I can guess a lot) and need some ideas on the functionality. What I guessed is : write through (keep disks updated) cache on read miss cache on write adjustable size cache What I don't know is : do you want it to be completely invisible (no commands) how pessimistic should it be about disk exchanges I can imagine the usefullness of such a tool. However, you still also need a smaller RAMdisk, since a lot of time goes into write & verify of intermediate files for C compilers etc. Any experience and suggestions please DIRECTLY to me, I'll summarize on the net. Gert Slavenburg ..mcvax!prle1!prle2!slavenbg "mcvax!prle1!prle2!slavenbg"@seismo.ARPA gert@su-pescadero.ARPA