zswapstat
This is a relatively simple script that provides human-readable statistics for
the zswap Linux kernel module. It outputs each field provided in
/sys/kernel/debug/zswap, as well as some values derived from those fields.
Requirements
Python 3.9 or newer. Older versions may work, but have not been tested.
Sample Output
# zswapstat
same_filled_pages 1692
stored_pages 11626
pool_total_size 20344832
duplicate_entry 0
written_back_pages 0
reject_compress_poor 59
reject_kmemcache_fail 0
reject_alloc_fail 0
reject_reclaim_fail 0
pool_limit_hit 0
compressed 19.4 MiB
uncompressed 45.4 MiB
space_savings 0.573
# zswapstat -h
usage: zswapstat [-h] [--block-size {b,k,m,g,t,p,e,z,y}] [--si]
optional arguments:
-h, --help show this help message and exit
--block-size {b,k,m,g,t,p,e,z,y}, -B {b,k,m,g,t,p,e,z,y}
Unit for scaling calculated values
--si Use SI units for size scaling (base-10 instead of base-2)
Licensing
This script is licensed under the ISC license. The license terms are listed in
the copyright header of zswapstat.py.