Drop ksm package, moved to ksmtuned srpm
This commit is contained in:
Cole Robinson
parent
13b2fd93a9
commit
c90305980d
14
ksm.service
14
ksm.service
@ -1,14 +0,0 @@
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[Unit]
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Description=Kernel Samepage Merging
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ConditionPathExists=/sys/kernel/mm/ksm
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ConditionVirtualization=no
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[Service]
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Type=oneshot
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RemainAfterExit=yes
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EnvironmentFile=-/etc/sysconfig/ksm
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ExecStart=/usr/libexec/ksmctl start
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ExecStop=/usr/libexec/ksmctl stop
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[Install]
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WantedBy=multi-user.target
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@ -1,4 +0,0 @@
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# The maximum number of unswappable kernel pages
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# which may be allocated by ksm (0 for unlimited)
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# If unset, defaults to half of total memory
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# KSM_MAX_KERNEL_PAGES=
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77
ksmctl.c
77
ksmctl.c
@ -1,77 +0,0 @@
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/* Start/stop KSM, for systemd.
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* Copyright (C) 2009, 2011 Red Hat, Inc.
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* Written by Paolo Bonzini <pbonzini@redhat.com>.
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* Based on the original sysvinit script by Dan Kenigsberg <danken@redhat.com>
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* This file is distributed under the GNU General Public License, version 2
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* or later. */
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#include <unistd.h>
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#include <stdio.h>
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#include <limits.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#define KSM_MAX_KERNEL_PAGES_FILE "/sys/kernel/mm/ksm/max_kernel_pages"
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#define KSM_RUN_FILE "/sys/kernel/mm/ksm/run"
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char *program_name;
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int usage(void)
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{
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fprintf(stderr, "Usage: %s {start|stop}\n", program_name);
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return 1;
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}
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int write_value(uint64_t value, char *filename)
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{
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FILE *fp;
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if (!(fp = fopen(filename, "w")) ||
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fprintf(fp, "%llu\n", (unsigned long long) value) == EOF ||
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fflush(fp) == EOF ||
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fclose(fp) == EOF)
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return 1;
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return 0;
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}
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uint64_t ksm_max_kernel_pages()
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{
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char *var = getenv("KSM_MAX_KERNEL_PAGES");
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char *endptr;
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uint64_t value;
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if (var && *var) {
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value = strtoll(var, &endptr, 0);
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if (value < LLONG_MAX && !*endptr)
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return value;
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}
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/* Unless KSM_MAX_KERNEL_PAGES is set, let KSM munch up to half of
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* total memory. */
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return sysconf(_SC_PHYS_PAGES) / 2;
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}
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int start(void)
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{
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if (access(KSM_MAX_KERNEL_PAGES_FILE, R_OK) >= 0)
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write_value(ksm_max_kernel_pages(), KSM_MAX_KERNEL_PAGES_FILE);
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return write_value(1, KSM_RUN_FILE);
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}
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int stop(void)
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{
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return write_value(0, KSM_RUN_FILE);
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}
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int main(int argc, char **argv)
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{
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program_name = argv[0];
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if (argc < 2) {
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return usage();
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} else if (!strcmp(argv[1], "start")) {
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return start();
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} else if (!strcmp(argv[1], "stop")) {
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return stop();
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} else {
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return usage();
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}
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}
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139
ksmtuned
139
ksmtuned
@ -1,139 +0,0 @@
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#!/bin/bash
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#
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# Copyright 2009 Red Hat, Inc. and/or its affiliates.
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# Released under the GPL
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#
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# Author: Dan Kenigsberg <danken@redhat.com>
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#
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# ksmtuned - a simple script that controls whether (and with what vigor) ksm
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# should search for duplicated pages.
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#
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# starts ksm when memory commited to qemu processes exceeds a threshold, and
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# make ksm work harder and harder untill memory load falls below that
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# threshold.
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#
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# send SIGUSR1 to this process right after a new qemu process is started, or
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# following its death, to retune ksm accordingly
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#
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# needs testing and ironing. contact danken@redhat.com if something breaks.
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if [ -f /etc/ksmtuned.conf ]; then
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. /etc/ksmtuned.conf
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fi
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debug() {
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if [ -n "$DEBUG" ]; then
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s="`/bin/date`: $*"
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[ -n "$LOGFILE" ] && echo "$s" >> "$LOGFILE" || echo "$s"
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fi
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}
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KSM_MONITOR_INTERVAL=${KSM_MONITOR_INTERVAL:-60}
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KSM_NPAGES_BOOST=${KSM_NPAGES_BOOST:-300}
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KSM_NPAGES_DECAY=${KSM_NPAGES_DECAY:--50}
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KSM_NPAGES_MIN=${KSM_NPAGES_MIN:-64}
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KSM_NPAGES_MAX=${KSM_NPAGES_MAX:-1250}
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# millisecond sleep between ksm scans for 16Gb server. Smaller servers sleep
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# more, bigger sleep less.
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KSM_SLEEP_MSEC=${KSM_SLEEP_MSEC:-10}
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KSM_THRES_COEF=${KSM_THRES_COEF:-20}
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KSM_THRES_CONST=${KSM_THRES_CONST:-2048}
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total=`awk '/^MemTotal:/ {print $2}' /proc/meminfo`
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debug total $total
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npages=0
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sleep=$[KSM_SLEEP_MSEC * 16 * 1024 * 1024 / total]
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[ $sleep -le 10 ] && sleep=10
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debug sleep $sleep
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thres=$[total * KSM_THRES_COEF / 100]
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if [ $KSM_THRES_CONST -gt $thres ]; then
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thres=$KSM_THRES_CONST
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fi
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debug thres $thres
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KSMCTL () {
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case x$1 in
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xstop)
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echo 0 > /sys/kernel/mm/ksm/run
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;;
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xstart)
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echo $2 > /sys/kernel/mm/ksm/pages_to_scan
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echo $3 > /sys/kernel/mm/ksm/sleep_millisecs
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echo 1 > /sys/kernel/mm/ksm/run
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;;
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esac
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}
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committed_memory () {
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# calculate how much memory is committed to running qemu processes
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local pidlist
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pidlist=$(pgrep -d ' ' -- '^qemu(-(kvm|system-.+)|:.{1,11})$')
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if [ -n "$pidlist" ]; then
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ps -p "$pidlist" -o rsz=
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fi | awk '{ sum += $1 }; END { print 0+sum }'
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}
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free_memory () {
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awk '/^(MemFree|Buffers|Cached):/ {free += $2}; END {print free}' \
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/proc/meminfo
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}
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increase_npages() {
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local delta
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delta=${1:-0}
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npages=$[npages + delta]
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if [ $npages -lt $KSM_NPAGES_MIN ]; then
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npages=$KSM_NPAGES_MIN
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elif [ $npages -gt $KSM_NPAGES_MAX ]; then
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npages=$KSM_NPAGES_MAX
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fi
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echo $npages
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}
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adjust () {
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local free committed
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free=`free_memory`
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committed=`committed_memory`
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debug committed $committed free $free
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if [ $[committed + thres] -lt $total -a $free -gt $thres ]; then
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KSMCTL stop
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debug "$[committed + thres] < $total and free > $thres, stop ksm"
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return 1
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fi
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debug "$[committed + thres] > $total, start ksm"
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if [ $free -lt $thres ]; then
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npages=`increase_npages $KSM_NPAGES_BOOST`
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debug "$free < $thres, boost"
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else
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npages=`increase_npages $KSM_NPAGES_DECAY`
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debug "$free > $thres, decay"
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fi
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KSMCTL start $npages $sleep
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debug "KSMCTL start $npages $sleep"
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return 0
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}
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function nothing () {
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:
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}
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loop () {
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trap nothing SIGUSR1
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while true
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do
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sleep $KSM_MONITOR_INTERVAL &
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wait $!
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adjust
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done
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}
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PIDFILE=${PIDFILE-/var/run/ksmtune.pid}
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if touch "$PIDFILE"; then
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loop &
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echo $! > "$PIDFILE"
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fi
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@ -1,21 +0,0 @@
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# Configuration file for ksmtuned.
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# How long ksmtuned should sleep between tuning adjustments
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# KSM_MONITOR_INTERVAL=60
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# Millisecond sleep between ksm scans for 16Gb server.
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# Smaller servers sleep more, bigger sleep less.
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# KSM_SLEEP_MSEC=10
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# KSM_NPAGES_BOOST=300
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# KSM_NPAGES_DECAY=-50
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# KSM_NPAGES_MIN=64
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# KSM_NPAGES_MAX=1250
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# KSM_THRES_COEF=20
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# KSM_THRES_CONST=2048
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# uncomment the following if you want ksmtuned debug info
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# LOGFILE=/var/log/ksmtuned
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# DEBUG=1
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@ -1,13 +0,0 @@
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[Unit]
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Description=Kernel Samepage Merging (KSM) Tuning Daemon
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After=ksm.service
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Requires=ksm.service
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ConditionVirtualization=no
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[Service]
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ExecStart=/usr/sbin/ksmtuned
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ExecReload=/bin/kill -USR1 $MAINPID
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Type=forking
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[Install]
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WantedBy=multi-user.target
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48
qemu.spec
48
qemu.spec
@ -112,13 +112,6 @@ URL: http://www.qemu.org/
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Source0: http://wiki.qemu-project.org/download/%{name}-%{version}%{?rcstr}.tar.xz
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# KSM control scripts
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Source4: ksm.service
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Source5: ksm.sysconfig
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Source6: ksmctl.c
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Source7: ksmtuned.service
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Source8: ksmtuned
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Source9: ksmtuned.conf
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# guest agent service
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Source10: qemu-guest-agent.service
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Source17: qemu-ga.sysconfig
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@ -316,17 +309,6 @@ Requires(postun): systemd-units
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This package provides the common files needed by all QEMU targets
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%package -n ksm
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Summary: Kernel Samepage Merging services
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Requires(post): systemd-units
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Requires(postun): systemd-units
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%description -n ksm
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Kernel Samepage Merging (KSM) is a memory-saving de-duplication feature,
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that merges anonymous (private) pages (not pagecache ones).
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This package provides service files for disabling and tuning KSM.
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%package guest-agent
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Summary: QEMU guest agent
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Requires(post): systemd-units
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@ -942,8 +924,6 @@ make V=1 %{?_smp_mflags} $buildldflags
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popd
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%endif
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gcc %{_sourcedir}/ksmctl.c $RPM_OPT_FLAGS $RPM_LD_FLAGS -o ksmctl
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%install
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@ -954,14 +934,6 @@ mkdir -p %{buildroot}%{_udevdir}
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mkdir -p %{buildroot}%{_unitdir}
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mkdir -p %{buildroot}%{_sysconfdir}/qemu
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install -D -p -m 0644 %{_sourcedir}/ksm.service %{buildroot}%{_unitdir}
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install -D -p -m 0644 %{_sourcedir}/ksm.sysconfig %{buildroot}%{_sysconfdir}/sysconfig/ksm
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install -D -p -m 0755 ksmctl %{buildroot}%{_libexecdir}/ksmctl
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install -D -p -m 0644 %{_sourcedir}/ksmtuned.service %{buildroot}%{_unitdir}
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install -D -p -m 0755 %{_sourcedir}/ksmtuned %{buildroot}%{_sbindir}/ksmtuned
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install -D -p -m 0644 %{_sourcedir}/ksmtuned.conf %{buildroot}%{_sysconfdir}/ksmtuned.conf
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# Install qemu-guest-agent service and udev rules
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install -m 0644 %{_sourcedir}/qemu-guest-agent.service %{buildroot}%{_unitdir}
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install -m 0644 %{_sourcedir}/qemu-ga.sysconfig %{buildroot}%{_sysconfdir}/sysconfig/qemu-ga
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@ -1157,17 +1129,6 @@ getent passwd qemu >/dev/null || \
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-c "qemu user" qemu
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%post -n ksm
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%systemd_post ksm.service
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%systemd_post ksmtuned.service
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%preun -n ksm
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%systemd_preun ksm.service
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%systemd_preun ksmtuned.service
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%postun -n ksm
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%systemd_postun_with_restart ksm.service
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%systemd_postun_with_restart ksmtuned.service
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%post user-binfmt
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/bin/systemctl --system try-restart systemd-binfmt.service &>/dev/null || :
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%postun user-binfmt
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@ -1250,15 +1211,6 @@ getent passwd qemu >/dev/null || \
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%dir %{_libdir}/qemu
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%files -n ksm
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%{_libexecdir}/ksmctl
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%{_sbindir}/ksmtuned
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%{_unitdir}/ksmtuned.service
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%{_unitdir}/ksm.service
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%config(noreplace) %{_sysconfdir}/ksmtuned.conf
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%config(noreplace) %{_sysconfdir}/sysconfig/ksm
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%files guest-agent
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%{_bindir}/qemu-ga
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%{_mandir}/man8/qemu-ga.8*
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