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a… Fallback for kernels < 3.14 where /proc/meminfo does not provide
"MemAvailable:" column, see:
https://blog.famzah.net/2014/09/24/
This code reimplements the algorithm outlined here:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/
commit/?id=34e431b0ae398fc54ea69ff85ec700722c9da773
XXX: on recent kernels this calculation differs by ~1.5% than
"MemAvailable:" as it's calculated slightly differently, see:
https://gitlab.com/procps-ng/procps/issues/42
https://github.com/famzah/linux-memavailable-procfs/issues/2
It is still way more realistic than doing (free + cached) though.
s MemFree:s Cached:r s
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utility values and procps-ng-3.3.12 source was used as a reference
(2016-09-18):
https://gitlab.com/procps-ng/procps/blob/
24fd2605c51fccc375ab0287cec33aa767f06718/proc/sysinfo.c
For reference, procps-ng-3.3.10 is the version available on Ubuntu
16.04.
Note about "available" memory: up until psutil 4.3 it was
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it's more accurate.
That matches "available" column in newer versions of "free".
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rØ c C s^ t ƒ } t| ƒ td| ƒ}| ¡ ¡ }W dQ R X |dttjƒd … }dd„ |D ƒ}t|Ž S )zíReturn a named tuple representing the following system-wide
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z%s/statNr c S s g | ]}t |ƒt ‘qS r@ )ÚfloatÚ CLOCK_TICKS)r¼ rI r@ r@ rA r½ ^ s z cpu_times..)r
rœ r r• r~ r– r” Ú_fields)r˜ r™ rš r› r@ r@ rA Ú cpu_timesR s rÜ c C sŒ t ƒ } t| ƒ g }td| ƒd}| ¡ xT|D ]L}| d¡r.| ¡ }|dttjƒd … }dd„ |D ƒ}t|Ž }| |¡ q.W |S Q R X dS )zfReturn a list of namedtuple representing the CPU times
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z%s/stats cpur c S s g | ]}t |ƒt ‘qS r@ )rÙ rÚ )r¼ rI r@ r@ rA r½ p s z!per_cpu_times..N)
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rõ c C s´ t dtƒ ƒŒ} d}d}d}xx| D ]p}| d¡rBt| ¡ d ƒ}n6| d¡r^t| ¡ d ƒ}n| d¡rxt| ¡ d ƒ}|dk r"|dk r"|dk r"P q"W W dQ R X d}t ||||¡S )z*Return various CPU stats as a named tuple.z%s/statNs ctxtr s intrs softirqr )r r
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rû z'/sys/devices/system/cpu/cpufreq/policy0z$/sys/devices/system/cpu/cpu0/cpufreqc C s dd„ } g }x°t tƒ ƒD ]¢}| |ƒ}|s*qtjj}t||dƒdd}|dkrnt||dƒdd}|dkrntdƒ‚t|ƒd }tt||d ƒƒƒd }tt||d
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|||¡¡ qW |S ) z‚Return frequency metrics for all CPUs.
Contrarily to other OSes, Linux updates these values in
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c S s. x(d| d| fD ]}t j |¡r|S qW d S )Nz(/sys/devices/system/cpu/cpufreq/policy%sz%/sys/devices/system/cpu/cpu%s/cpufreq)r| rc Úexists)rç Úpr@ r@ rA Úget_pathÙ s zcpu_freq..get_pathZscaling_cur_freqN)r£ Zcpuinfo_cur_freqz!can't find current frequency fileiè Zscaling_max_freqZscaling_min_freq) Úrangeré r| rc rÊ r¥ ÚNotImplementedErrorrÀ r— r Úscpufreq)rþ r· Únrc ZpjoinÚcurrZmax_Zmin_r@ r@ rA Úcpu_freqÔ s$ r z
/proc/cpuinfoc C sf g } t dtƒ ƒJ}xB|D ]:}| ¡ d¡r| dd¡\}}| t t|ƒdd¡¡ qW W dQ R X | S )z}Alternate implementation using /proc/cpuinfo.
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According to [1] it would be possible but not easily.
[1] http://serverfault.com/a/417946
c C s˜ dt jt jf}dt jt jf}dt jt jf}dt jt jf}dt jd f}|||||f||f|f|f||f|f|f|f||||f||f||fdœ | _d | _d S )NÚtcpÚtcp6ÚudpÚudp6Úunix) Úallr Útcp4r r
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rä tƒ sÞt‚n‚ Y nX t ||¡S ) a† Accept an "ip:port" address as displayed in /proc/net/*
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hexadecimal number; that is, the least significant byte is listed
first, so we need to reverse the order of the bytes to convert it
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Reference:
http://linuxdevcenter.com/pub/a/linux/2000/11/16/LinuxAdmin.html
ú:é r@ ÚasciiNr7 ú>4Iú<4I)r) )r* )r~ rÀ r! Úencoder r Ú
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- lm-sensors on Ubuntu 16.04 relies on /sys/class/hwmon
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only (old distros will probably use something else)
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z /sys/class/hwmon/hwmon*/fan*_*z%/sys/class/hwmon/hwmon*/device/fan*_*c S s g | ]}| d ¡d ‘qS )rÔ r )r~ )r¼ rI r@ r@ rA r½ T s z sensors_fans..r“ z ignoring %rNr F)r¤ r” rH )r£ r¤ )rš r r rë rœ rê rÀ r¥ rŸ r rË rÌ rÍ r| rc rÊ rž r— r ÚsfanrŸ )r· r r¢ r¶ rÕ r£ r¤ r@ r@ rA Ú sensors_fansC s
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directory structure may vary and provide files with the same
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