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104 lines
2.9 KiB
Bash
Executable file
104 lines
2.9 KiB
Bash
Executable file
#!/bin/bash
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# SPDX-FileCopyrightText: 2021-2024 Ole Tange, http://ole.tange.dk and Free Software and Foundation, Inc.
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#
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# SPDX-License-Identifier: GPL-3.0-or-later
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forceswap() {
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perl -e '
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my $sleep_after = shift;
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# Only output if output is terminal
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my $output = -t STDOUT;
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sub freekb {
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my $free = `free|grep buffers/cache`;
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my @a=split / +/,$free;
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if($a[3] > 0) {
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return $a[3];
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}
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my $free = `free|grep Mem:`;
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my @a=split / +/,$free;
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if($a[6] > 0) {
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return $a[6];
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}
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die;
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}
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sub swapkb {
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my $swap = `free|grep Swap:`;
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my @a=split / +/,$swap;
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return $a[2];
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}
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my $swap = swapkb();
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my $lastswap = $swap;
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my $free = freekb();
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my @children;
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while($lastswap >= $swap) {
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$output and print "Swap: $swap Free: $free";
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$lastswap = $swap;
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$swap = swapkb();
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$free = freekb();
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my $pct10 = $free * 1024 * 10/100;
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my $use = ($pct10 > 2_000_000_000 ? 2_000_000_000 : $pct10);
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my $used_mem_single = "x"x($use/1000);
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# Faster for large values
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my $used_mem = "$used_mem_single"x1000;
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my $child = fork();
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if($child) {
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push @children, $child;
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} else {
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sleep 120;
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exit();
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}
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}
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$output and print "Swap increased $lastswap -> $swap\n";
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if($sleep_after) {
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$output and print "Sleep $sleep_after\n";
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sleep $sleep_after;
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}
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kill "INT", @children;
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' $@
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}
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echo '### Test niceload -q'
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niceload -q perl -e '$a = "works";$b="This $a\n"; print($b);'
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echo
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# Force swapping
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forceswap >/dev/null
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forceswap >/dev/null &
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cat <<'EOF' | sed -e 's/;$/; /;s/$SERVER1/'$SERVER1'/;s/$SERVER2/'$SERVER2'/' | stdout parallel -vj0 -k --joblog /tmp/jl-`basename $0` -L1 -r
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echo '### --rm and --runmem'
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niceload -H --rm 1g free -g | perl -ane '/Mem:/ and print $F[5],"\n"' | grep '[1-9]' >/dev/null && echo OK--rm
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niceload -H --runmem 1g free -g | perl -ane '/Mem:/ and print $F[5],"\n"' | grep '[1-9]' >/dev/null && echo OK--runmem
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echo '### -N and --noswap. Must give 0'
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niceload -H -N vmstat 1 2 | tail -n1 | awk '{print "-N " $7*$8}'
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niceload -H --noswap vmstat 1 2 | tail -n1 | awk '{print "--noswap " $7*$8}'
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EOF
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# force load > 10
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while uptime | grep -Ev age:.[1-9][0-9]+.[0-9][0-9] >/dev/null ; do
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(timeout 5 nice perl -e 'while(1){}' 2>/dev/null &)
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done
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cat <<'EOF' | sed -e 's/;$/; /;s/$SERVER1/'$SERVER1'/;s/$SERVER2/'$SERVER2'/' | stdout parallel -vj0 --joblog /tmp/jl-`basename $0` -L1
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echo '### -H and --hard'
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niceload -H -l 9.9 uptime | grep ':.[1-9][0-9].[0-9][0-9],' || echo OK-load below 9.9
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niceload --hard -l 9 uptime | grep ':.[1-9][0-9].[0-9][0-9],' || echo OK-load below 10
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EOF
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cat <<'EOF' | sed -e 's/;$/; /;s/$SERVER1/'$SERVER1'/;s/$SERVER2/'$SERVER2'/' | stdout parallel --timeout 300 -vj0 --joblog /tmp/jl-`basename $0` -L1
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echo '### -f and --factor'
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niceload -H --factor 30 -l6 echo factor 30 finish last
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niceload -H -f 0.01 -l6 echo f 0.1 finish first
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EOF
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#echo '### Test niceload -p'
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#sleep 3 &
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#nice-load -v -p $!
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