Out-of-memory victim selection with BPF

Posted Aug 18, 2023 21:00 UTC (Fri) by intelfx (subscriber, #130118)
In reply to: Out-of-memory victim selection with BPF by timrichardson
Parent article: Out-of-memory victim selection with BPF

> I found the best option for desktop use where there is room for a swapfile on low memory systems is zswap, dynamic swap via swapspace, no user user-space killer and MGLRU activated. I don't think there is a single distribution which defaults to that combination.

I believe Arch does almost that, modulo swapspace:

$ grep -E '(LRU_GEN|ZSWAP)' config
CONFIG_ZSWAP=y
CONFIG_ZSWAP_DEFAULT_ON=y
# CONFIG_ZSWAP_COMPRESSOR_DEFAULT_DEFLATE is not set
# CONFIG_ZSWAP_COMPRESSOR_DEFAULT_LZO is not set
# CONFIG_ZSWAP_COMPRESSOR_DEFAULT_842 is not set
# CONFIG_ZSWAP_COMPRESSOR_DEFAULT_LZ4 is not set
# CONFIG_ZSWAP_COMPRESSOR_DEFAULT_LZ4HC is not set
CONFIG_ZSWAP_COMPRESSOR_DEFAULT_ZSTD=y
CONFIG_ZSWAP_COMPRESSOR_DEFAULT="zstd"
# CONFIG_ZSWAP_ZPOOL_DEFAULT_ZBUD is not set
# CONFIG_ZSWAP_ZPOOL_DEFAULT_Z3FOLD is not set
CONFIG_ZSWAP_ZPOOL_DEFAULT_ZSMALLOC=y
CONFIG_ZSWAP_ZPOOL_DEFAULT="zsmalloc"
CONFIG_LRU_GEN=y
CONFIG_LRU_GEN_ENABLED=y
# CONFIG_LRU_GEN_STATS is not set