Zram: Difference between revisions
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== Configuration == | == Configuration == | ||
For a basic ZRAM swap, configure ZRAM by editing the file {{path|/etc/conf.d/zram-init}} as follows:{{Cat|/etc/conf.d/zram-init|<nowiki>num_devices=1 | For a basic ZRAM swap, configure ZRAM by editing the file {{path|/etc/conf.d/zram-init}} as follows:{{Cat|/etc/conf.d/zram-init|<nowiki>load_on_start=yes | ||
size0=8000 </nowiki>}} | unload_on_stop=yes | ||
num_devices=1 | |||
type0=swap | |||
size0=8000 | |||
</nowiki>}} | |||
Advanced parameters can be found in the [https://github.com/vaeth/zram-init/blob/main/openrc/conf.d/zram-init source repo]. | |||
Start services:{{Cmd|# rc-service zram-init start}} | Start services:{{Cmd|# rc-service zram-init start}} | ||
Check overall status: {{Cmd|# zramctl}} | |||
View the ZRAM drive:{{Cmd|# cat /proc/swaps}} | View the ZRAM drive:{{Cmd|# cat /proc/swaps}} | ||
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== Troubleshooting == | == Troubleshooting == | ||
Check whether ZRAM's module is loaded: {{Cmd|# lsmod | grep zram}} | |||
If not loaded, use <code>modprobe</code> to load it: (however, it should be automatically loaded if <code>load_on_start=yes</code> is in the configuration) {{Cmd|# modprobe zram}} | |||
== See also == | == See also == | ||
Latest revision as of 12:13, 11 January 2026
This page documents how to set up ZRAM in Alpine Linux. Zram can be used as an alternative to Swap partition.
Installation
Install the neccessary packages:
# apk add zram-init
Configuration
For a basic ZRAM swap, configure ZRAM by editing the file /etc/conf.d/zram-init as follows:
Contents of /etc/conf.d/zram-init
Advanced parameters can be found in the source repo.
Start services:
# rc-service zram-init start
Check overall status:
# zramctl
View the ZRAM drive:
# cat /proc/swaps
Check Algorithms:
# cat /sys/block/zram0/comp_algorithm
Advanced setups may also add these parameters to /etc/sysctl.conf as follows:
Contents of /etc/sysctl.conf
To ensure that service starts during next reboot:
# rc-update add zram-init
Troubleshooting
Check whether ZRAM's module is loaded:
# lsmod | grep zram
If not loaded, use modprobe to load it: (however, it should be automatically loaded if load_on_start=yes is in the configuration)
# modprobe zram