Messages in this thread | | | Date | Wed, 11 Dec 2002 16:27:32 -0800 | From | Andrew Morton <> | Subject | Re: Memory Measurements and Lots of Files and Inodes |
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"Patrick R. McManus" wrote: > > ... > > If you could share your test apps that would help a lot. > > sure! this is the "lots of files" program.
Yep, negative dentries:
dentry_cache: 149092KB 149092KB 100.0 ext3_inode_cache: 3425KB 10102KB 33.90 radix_tree_node: 594KB 1612KB 36.88 buffer_head: 543KB 1264KB 42.99
You can monitor these via /proc/slabinfo, or using Bill's bloatmeter script from http://www.zip.com.au/~akpm/linux/patches/stuff/
> ... > > > On your machine it'll be "all of swap plus all of physical memory > > minus whatever malloc'ed memory you're using now minus 8-12 megabytes". > > There isn't much memory which cannot be reclaimed unless you have a > > huge machine or you're doing odd things. > > this is useful advice, thanks. Basically what the new procps does?
I don't know what procps does.
But your fill-up-all-memory program will certainly do the trick. Run it, create a huge swapstorm (or get oom-killed if there's no swap) and then see what `free' says. That's as much memory as the kernel will ever give you. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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