35 lines
889 B
Plaintext
35 lines
889 B
Plaintext
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#!/bin/bash
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# get the number of CPUs
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num_cpus=$(grep -c processor /proc/cpuinfo)
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# if something goes wrong, assume we have 1
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[ "$num_cpus" != 0 ] || num_cpus=1
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# set decremented number of CPUs
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decr_num_cpus=$((num_cpus - 1))
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# get the amount of memory in the machine
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mem_total_kb=$(grep MemTotal /proc/meminfo | grep -E --only-matching '[[:digit:]]+')
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mem_total=$((mem_total_kb * 1024))
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# load dependency modules
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#modprobe zram zram_num_devices=$num_cpus
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# Determine module parm
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mod_parm=$(modinfo zram |grep parm |tr -s " " |cut -f2 -d ":")
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modprobe zram $mod_parm=$num_cpus
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# initialize the devices
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for i in $(seq 0 $decr_num_cpus); do
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echo $((mem_total / num_cpus)) > /sys/block/zram$i/disksize
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done
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# Creating swap filesystems
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for i in $(seq 0 $decr_num_cpus); do
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mkswap /dev/zram$i
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done
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# Switch the swaps on
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for i in $(seq 0 $decr_num_cpus); do
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swapon -p 100 /dev/zram$i
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done
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