Messages in this thread | | | Date | Wed, 22 Jul 1998 20:02:46 -0400 | From | Bill Hawes <> | Subject | Re: 2.1.110 freepages.min change |
| |
Linus Torvalds wrote:
> But does it make any difference performance-wise for you?
A few sporadic flushes during a compile won't make much difference, but I'm more concerned about the case of busy news or web servers. Such machines would likely be doing some level of swapping all of the time, even if properly configured with adequate memory. If the vm system cycles through the swap states every second or two, flushing the dcache each time, then the effective "memory" of the dcache will be limited by that cycle time.
These are the kinds of applications that should show off the 2.1 dcache to its best effect, but may instead not show much or any performance benefit.
> If it flushes the name cache a few times during a kernel compile I > wouldn't be worried - I'm a lot more worried about not flushing it enough, > as was clearly the case on small-memory machines.
Well, I'm pretty much convinced that the small-memory "rust" problem was really a configuration issue, with the inode limit set too high for the system memory.
Regards, Bill
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.altern.org/andrebalsa/doc/lkml-faq.html
| |