Verified Commit d33d6b7e authored by Jan Alexander Steffens (heftig)'s avatar Jan Alexander Steffens (heftig)
Browse files

roles/archbuild: Merge distro swap.conf

parent b176e57c
......@@ -10,9 +10,9 @@
# https://www.kernel.org/doc/Documentation/vm/zswap.txt
zswap_enabled=1
zswap_compressor=lz4
zswap_max_pool_percent=25
zswap_zpool=z3fold
zswap_compressor=lz4 # lzo lz4
zswap_max_pool_percent=25 # 1-99
zswap_zpool=z3fold # zbud z3fold
################################################################################
# ZRam
......@@ -22,10 +22,10 @@ zswap_zpool=z3fold
# https://www.kernel.org/doc/Documentation/blockdev/zram.txt
zram_enabled=0
zram_size=$(($ram_size/4))K # This is 1/4 of ram size by default.
zram_size=$(($ram_size/4))K # This is 1/4 of ram size by default.
zram_streams=$cpu_count
zram_alg=lz4 # lzo lz4 deflate lz4hc 842 - for Linux 4.8.4
zram_prio=32767
zram_alg=lz4 # lzo lz4 deflate lz4hc 842 - for Linux 4.8.4
zram_prio=32767 # 1 - 32767
################################################################################
# Swap File Universal
......@@ -44,27 +44,28 @@ swapfu_directio=0
# files with size 2G (mounted by loop), fs: btrfs
# fio: test 4k, randrw, iodepth 64, libaio, directio 1
# HDD 1TB 5400k
# loop directio 0 Behaviour IO/s
# prealloc=0 + nocow=0 - NOT stable speed ~ 2400
# prealloc=1 + nocow=0 - stable speed, HORRIBLY SLOW ~ 160
# prealloc=0 + nocow=1 - stable speed, can degraded by time ~ 3300
# prealloc=1 + nocow=1 - stable speed ~ 2000
# loop directio 1
# prealloc=0 + nocow=0 - not stable speed ~ 50
# prealloc=1 + nocow=0 - not stable speed ~ 69
# prealloc=0 + nocow=1 - not stable speed ~ 63
# prealloc=1 + nocow=1 - not stable speed ~ 75
# raw file (loop device are slow)
# prealloc=0 + nocow=0 - not stable speed ~ 7600
# prealloc=1 + nocow=0 - not stable speed ~ 69
# prealloc=0 + nocow=1 - not stable speed ~ 13000
# prealloc=1 + nocow=1 - not stable speed ~ 174
# Loop device:
# PREALLOC | NoCoW | DirectIO | ~ IO/s | Comment
# - | - | - | 2400 | NOT stable speed
# + | - | - | 160 | stable speed, HORRIBLY SLOW
# - | + | - | 3300 | stable speed, can degraded by time
# + | + | - | 2000 | stable speed
# - | - | + | 50 | not stable speed
# + | - | + | 69 | not stable speed
# - | + | + | 63 | not stable speed
# + | + | + | 75 | not stable speed
# raw file (loop device are slow):
# PREALLOC | NoCoW | DirectIO | ~ IO/s | Comment
# - | - | + | 7600 | not stable speed
# + | - | + | 69 | not stable speed
# - | + | + | 13000 | not stable speed
# + | + | + | 174 | not stable speed
# File will not be available in fs after script start
# Make sure what script can access to this path during the boot process.
# Full path to swapfile
swapfu_path=/var/swap
swapfu_prio=-1024
swapfu_path=/var/lib/systemd-swap/swapfu
swapfu_prio=1 # 1 - 32767
################################################################################
# Swap File Chunked
......@@ -73,10 +74,10 @@ swapfu_prio=-1024
swapfc_enabled=0
swapfc_frequency=1s # How often check free swap space
swapfc_chunk_size=256M # Allocate size of swap chunk
swapfc_max_count=16 # 0 - unlimited
swapfc_max_count=16 # 0 - unlimited, note: 32 is a kernel maximum
swapfc_free_swap_perc=15 # Add new chunk if free < 15%
# Remove chunk if free > 15+40% & chunk count > 2
swapfc_path=/var/.swapfc/
swapfc_path=/var/lib/systemd-swap/swapfc/
################################################################################
# Swap devices
......
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