On Tue, Aug 28, 2012 at 12:31 AM, Skylar Thompson <skylar.thomp...@gmail.com > wrote:
> It can be a real problem for latency-sensitive applications that are > cohabiting on a system that's also doing heavy I/O. For instance, > IBM's TSM database process (often consuming 75% of the physical memory > of the machine for indices) often becomes paged out during heavy > backup load because the kernel is trying to free up buffer space for > Oh, right, that sounds like Linux still doesn't have a *sane* memory manager. It should be able to tell the difference and avoid paging out recently used pages to make space for buffers. This isn't so much "swapping/paging bad" as "Linux kernel bad". AKA why people use Solaris and FreeBSD still. (not that they don't have their own problems, but they have generally done a lot better in this particular area) -- brandon s allbery allber...@gmail.com wandering unix systems administrator (available) (412) 475-9364 vm/sms
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