On Thu, 11 Jan 2007 13:50:53 +0800 Aubrey <[EMAIL PROTECTED]> wrote: > Firstly I want to say I'm working on no-mmu arch and uClinux. > After much of file operations VFS cache eat up all of the memory. > At this time, if an application request memory which order > 3, the > kernel will report failure.
nommu kernels should probably run reclaim for higher-order allocations as well. That's rather a blunt instrument. The "lumpy reclaim" patches in -mm provide a much better approach, but they need more work yet (although I don't immediately recall what's needed). In the interim you could do the old "echo 3 > /proc/sys/vm/drop_caches" thing, but that's terribly crude - drop_caches is really only for debugging and benchmarking. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
