Re: [RFC][PATCH v3 0/7] introduce automatic pool compaction

Sergey Senozhatsky
2015-06-18T12:18:51Z

Minchan, FYI,

I re-done the test (untouched almost_empty waterline).

Kernel log
test started [ 788.064886]
test ended [ 4025.914190]

test (doing `cp' in parallel):
(a) for i in {1..X}; do cp -R ~/git .; sync; rm -fr git/; done

# compiled kernel, with object files. 2.2G
(b) for i in {1..X}; do cp -R ~/linux/ .; sync; rm -fr linux/; done

(c) for i in {1..X}; do cp -R ~/glibc/ .; sync; rm -fr glibc/; done

Minimal si_meminfo(&si)->si.freeram observed on the system was: 6390

cat /sys/block/zram0/stat
31253 0 250024 316 12281689 0 98253512 141263 0 141590 141763

cat /sys/block/zram0/mm_stat
3183374336 2105262569 2140762112 0 2821394432 1864 358173

The results are:

compaction nr:2335 (full:953 part:60956)

ratio: 0.01539 (~1.53% of classes were fully compacted)

More or less same numbers.

-ss