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b627b8d8e1
This commit is based on the s390-tools-1.39.0 version. Changes on top of s390-tools-1.39.0: - Add MIT license to all source files - Add LICENSE file - Transform REAMDE to README.md (markdown) - Add AUTHORS.md file - Add CONTRIBUTING.md file - Move changelog from README to CHANGELOG.md file Reviewed-by: Stefan Haberland <sth@linux.vnet.ibm.com> Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
167 lines
5.4 KiB
Plaintext
167 lines
5.4 KiB
Plaintext
#
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# Exemplary configuration file for the Linux on System z CPU and memory hotplug
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# daemon
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#
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# The file is evaluated by cpuplugd at startup when called with -c.
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# It does not contain shell environment variables.
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## Type: integer
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## Default: 1
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#
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# The minimum number of CPUs must be > 0.
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#
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CPU_MIN="1"
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## Type: integer
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## Default: 0
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#
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# The maximum number of CPUs to be enabled. If 0 is specified here,
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# the maximum number of CPUs equals the number of CPUs detected.
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#
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CPU_MAX="0"
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## Type: integer
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## Default: 5
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#
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# The update interval described how often the current system state
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# is checked against the configured set of hotplug and hotunplug rules.
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# The update interval is defined in seconds.
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#
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UPDATE="1"
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## Type: integer
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## Default: 0
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#
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# The minimum size of the static page pool (in 4K pages)
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#
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CMM_MIN="0"
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## Type: integer
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## Default: 131072
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#
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# The maximum size of the static page pool (in 4K pages)
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#
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# Recommended setting is system size minus 256 MB
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CMM_MAX="131072" # 512 MB
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#
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# Variables
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#
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# User-defined variables are case-sensitive and must not match a pre-defined
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# variable or keyword. In the configuration file, definitions
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# for user-defined variables must precede their use in expressions.
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# Variable names consist of alphanumeric characters (a-z,A-Z,0-9) and
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# the "_" character. The maximum name length for a variable is 128 characters,
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# and the maximum total size for user-defined variables (names + values) is 4096
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# characters.
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#
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pgscan_d="vmstat.pgscan_direct_dma[0] + vmstat.pgscan_direct_normal[0] + vmstat.pgscan_direct_movable[0]"
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pgscan_d1="vmstat.pgscan_direct_dma[1] + vmstat.pgscan_direct_normal[1] + vmstat.pgscan_direct_movable[1]"
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# page scan rate in pages / timer tick
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pgscanrate="(pgscan_d - pgscan_d1) / (cpustat.total_ticks[0] - cpustat.total_ticks[1])"
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# cache usage in kilobytes
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avail_cache="meminfo.Cached - meminfo.Shmem"
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user_0="(cpustat.user[0] - cpustat.user[1])"
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nice_0="(cpustat.nice[0] - cpustat.nice[1])"
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system_0="(cpustat.system[0] - cpustat.system[1])"
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user_2="(cpustat.user[2] - cpustat.user[3])"
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nice_2="(cpustat.nice[2] - cpustat.nice[3])"
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system_2="(cpustat.system[2] - cpustat.system[3])"
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CP_Active0="(user_0 + nice_0 + system_0) / (cpustat.total_ticks[0] - cpustat.total_ticks[1])"
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CP_Active2="(user_2 + nice_2 + system_2) / (cpustat.total_ticks[2] - cpustat.total_ticks[3])"
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CP_ActiveAVG="(CP_Active0+CP_Active2) / 2"
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idle_0="(cpustat.idle[0] - cpustat.idle[1])"
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iowait_0="(cpustat.iowait[0] - cpustat.iowait[1])"
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idle_2="(cpustat.idle[2] - cpustat.idle[3])"
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iowait_2="(cpustat.iowait[2] - cpustat.iowait[3])"
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CP_idle0="(idle_0 + iowait_0) / (cpustat.total_ticks[0] - cpustat.total_ticks[1])"
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CP_idle2="(idle_2 + iowait_2) / (cpustat.total_ticks[2] - cpustat.total_ticks[3])"
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CP_idleAVG="(CP_idle0 + CP_idle2) / 2"
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## Type: string
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## Default: "(meminfo.MemFree + cache) / 40"
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#
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# The amount of pages the static page pool
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# is increased if a memunplug rule is matched.
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#
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# cmm_inc: 10% of free memory, in 4K pages
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CMM_INC="meminfo.MemFree / 40"
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## Type: string
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## Default: "meminfo.MemTotal / 40"
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#
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# The amount of pages the static page pool
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# is decreased if a memplug rule is matched.
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#
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# cmm_dec: 10% of total memory, in 4K pages
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CMM_DEC="meminfo.MemTotal / 40"
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#
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# Ruledefinitions
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#
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# Four kinds of rules are distinguished
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# (1) hotplug rules, used to enable CPUs
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# (2) hotunplug rules, to disable CPUs
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# (3) memplug rules, used to increase memory (decrease cmm balloon)
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# (4) memunplug rules, used to decrease memory (increase cmm balloon)
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#
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# Within the hotplug/hotunplug rule definitions the following variables
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# can be used:
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# - loadavg: the current loadaverage
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# - onumcpus: the current number of CPUs which are online
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# - runnable_proc: the current amount of runnable processes
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# - user: the current user percentage
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# - nice: the current nice percentage
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# - system: the current system percentage
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# - idle: the current idle percentage
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# - iowait: the current iowait percentage
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# - irq: the current irq percentage
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# - softirq: the current softirq percentage
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# - steal: the current steal percentage
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# - guest: the current guest percentage
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# - guest_nice: the current guest_nice percentage
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# - cpustat.<name>: data from /proc/stat and /proc/loadavg
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# - time: floating point timestamp in "seconds.microseconds"
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# since the Unix Epoch (1970-01-01 00:00:00 +0000 (UTC))
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#
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## Type: string
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## Default: "(loadavg > onumcpus + 0.75) & (idle < 10.0)"
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#
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HOTPLUG="((1 - CP_ActiveAVG) * onumcpus) < 0.08"
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## Type: string
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## Default: "(loadavg < onumcpus - 0.25) | (idle > 50)"
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#
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HOTUNPLUG="(CP_idleAVG * onumcpus) > 1.15"
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#
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# Memplug and memunplug can contain the following keywords:
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# - apcr: the amount of page cache operations,
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# i.e. pgpin + pgpout from /proc/vmstat
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# (in 512 byte blocks / second)
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# - freemem: the amount of free memory (in megabytes)
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# - swaprate: the number of swap operations, i.e. pswpin + pswpout
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# from /proc/vmstat (in pages / second)
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# - meminfo.<name>: any value from /proc/meminfo
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# - vmstat.<name>: any value from /proc/vmstat
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# - time: floating point timestamp in "seconds.microseconds"
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# since the Unix Epoch (1970-01-01 00:00:00 +0000 (UTC))
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#
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# This function is disabled by default, because this rule has to be
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# adjusted for each production system, depending on the environment.
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#
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## Type: string
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## Default: "0"
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#
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#MEMPLUG="pgscanrate > 20"
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MEMPLUG="0"
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## Type: string
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## Default: "0"
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#
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#MEMUNPLUG="(meminfo.MemFree + avail_cache) > (meminfo.MemTotal / 10)"
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MEMUNPLUG="0"
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