Module: Sunburst
- Defined in:
- lib/sunburst/version.rb,
lib/sunburst/sunburst.rb,
ext/stats/stats.c
Constant Summary collapse
Class Method Summary collapse
- .calculate_cpu_usage(pid, sleep_time) ⇒ Object
- .clock_monotonic ⇒ Object
- .get_mem(pid) ⇒ Object
- .get_stats(pid) ⇒ Object
- .measure(command:, time: nil, sleep_time: 0.001) ⇒ Object
- .nprocessors ⇒ Object
- .ps_stat(pid) ⇒ Object
- .total_ram ⇒ Object
- .win_width ⇒ Object
Class Method Details
.calculate_cpu_usage(pid, sleep_time) ⇒ Object
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# File 'lib/sunburst/sunburst.rb', line 13 def self.calculate_cpu_usage(pid, sleep_time) uptime_file = '/proc/uptime'.freeze unless File.readable?(uptime_file) sleep(sleep_time) return nil end ticks = Sunburst::TICKS stat = Sunburst.ps_stat(pid) uptime = IO.read('/proc/uptime').to_f if stat.empty? sleep(sleep_time) return nil end utime, stime, starttime = *stat.values_at(1, 2, 5).map(&:to_f) uptime *= ticks total_time = utime + stime idle1 = uptime - starttime - total_time sleep(sleep_time) stat = Sunburst.ps_stat(pid) uptime = IO.read('/proc/uptime').to_f return nil if stat.empty? utime2, stime2, starttime2 = *stat.values_at(1, 2, 5).map(&:to_f) uptime *= ticks total_time2 = utime2 + stime2 idle2 = uptime - starttime2 - total_time2 totald = idle2.+(total_time2).-(idle1 + total_time) cpu_u = totald.-(idle2 - idle1).fdiv(totald).abs.*(100)./(Sunburst.nprocessors) cpu_u > 100 ? 100.0 : cpu_u end |
.clock_monotonic ⇒ Object
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# File 'ext/stats/stats.c', line 76 VALUE clock_monotonic(volatile VALUE obj) { struct timespec tv ; clock_gettime(CLOCK_MONOTONIC, &tv) ; float time = tv.tv_sec + tv.tv_nsec / 1000000000.0 ; return rb_float_new(time) ; } |
.get_mem(pid) ⇒ Object
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# File 'ext/stats/stats.c', line 10
VALUE statm_memory(volatile VALUE obj, volatile VALUE pid) {
int _pid = FIX2INT(pid) ;
if (_pid < 0) return Qnil ;
char _path[22] ;
sprintf(_path, "/proc/%d/statm", _pid) ;
FILE *f = fopen(_path, "r") ;
if (!f) return Qnil ;
unsigned int resident, shared ;
char status = fscanf(f, "%*u %u %u", &resident, &shared) ;
fclose(f) ;
if (status != 2) return Qnil ;
unsigned int v = resident - shared ;
return UINT2NUM(v) ;
}
|
.get_stats(pid) ⇒ Object
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# File 'lib/sunburst/sunburst.rb', line 2 def self.get_stats(pid) stats = Sunburst.ps_stat(pid) if stats.empty? Process.kill(9, pid) fail RuntimeError, 'Something horribly wrong happened! Exiting.' end stats end |
.measure(command:, time: nil, sleep_time: 0.001) ⇒ Object
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# File 'lib/sunburst/sunburst.rb', line 54 def self.measure(command:, time: nil, sleep_time: 0.001) progress = block_given? r = { execution_time: nil, cpu_time: nil, memory: nil, max_threads: nil, avg_mem: nil, max_memory: nil, state: nil, last_state: nil, avg_cpu_usage: nil, max_cpu_usage: nil } IO.popen(command) { |x| time1 = Sunburst.clock_monotonic pid = x.pid t = if progress Thread.new { } else Thread.new { print x.readpartial(4096) until x.eof? } end cpu_usage = 0 max_cpu_usage = 0 cpu_usage_sum = 0 cpu_usage_measure_count = 0 Thread.new { while true _cpu_usage = calculate_cpu_usage(pid, 0.25) if _cpu_usage cpu_usage = "%05.2f%%".freeze % _cpu_usage cpu_usage_sum += _cpu_usage cpu_usage_measure_count += 1 max_cpu_usage = _cpu_usage if _cpu_usage > max_cpu_usage else cpu_usage = ?X.freeze end end } last_mem = 0 max_threads = 0 max_mem = 0 last_state = nil avg_mem = 0 mem_measure_count = 0 while true _last_mem = Sunburst.get_mem(pid) break if (time && Sunburst.clock_monotonic - time1 > time) || _last_mem == 0 last_mem = _last_mem max_mem = last_mem if max_mem < _last_mem avg_mem += _last_mem mem_measure_count += 1 # Get stats stats = get_stats(pid) _threads = stats[3] max_threads = _threads if max_threads < _threads last_state = stats[4] cpu_time = stats[1].+(stats[2]).fdiv(Sunburst::TICKS) if progress yield( Sunburst.clock_monotonic.-(time1), stats[1].+(stats[2]).fdiv(Sunburst::TICKS), _last_mem * Sunburst::PAGESIZE, _threads, last_state, cpu_usage ) end sleep(sleep_time) end time2 = Sunburst.clock_monotonic # Get Stats stats = get_stats(pid) cpu_time = stats[1].+(stats[2]).fdiv(Sunburst::TICKS) _threads = stats[3] max_threads = _threads if max_threads < _threads _last_mem = Sunburst.get_mem(pid) max_mem = _last_mem if max_mem < _last_mem last_mem = _last_mem unless _last_mem == 0 state = stats[4] t.kill Process.kill(9, pid) r[:cpu_time] = cpu_time r[:max_threads] = max_threads unless max_threads == 0 r[:memory] = last_mem * Sunburst::PAGESIZE if last_mem > 0 r[:max_memory] = max_mem * Sunburst::PAGESIZE if last_mem > 0 r[:avg_mem] = (avg_mem * Sunburst::PAGESIZE) / mem_measure_count if mem_measure_count > 0 r[:execution_time] = time2.-(time1).truncate(5) r[:state] = state r[:last_state] = last_state r[:avg_cpu_usage] = sprintf("%05.2f%%", cpu_usage_sum / cpu_usage_measure_count) if cpu_usage_measure_count > 0 r[:max_cpu_usage] = sprintf("%05.2f%%", max_cpu_usage) if max_cpu_usage > 0 } r end |
.nprocessors ⇒ Object
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# File 'ext/stats/stats.c', line 71 VALUE nProcessors(volatile VALUE obj) { int coreCount = sysconf(_SC_NPROCESSORS_CONF) ; return (coreCount == -1) ? Qnil : INT2NUM(coreCount) ; } |
.ps_stat(pid) ⇒ Object
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# File 'ext/stats/stats.c', line 30
VALUE ps_stat(volatile VALUE obj, volatile VALUE pid) {
int _pid = FIX2INT(pid) ;
if (_pid < 0) return rb_str_new_cstr("") ;
char _path[22] ;
sprintf(_path, "/proc/%d/stat", _pid) ;
FILE *f = fopen(_path, "r") ;
if (!f) return rb_ary_new() ;
// For this info
// follow https://man7.org/linux/man-pages/man5/proc.5.html
char state[1] ;
int ppid, processor ;
long unsigned utime, stime ;
long num_threads ;
long long unsigned starttime ;
char status = fscanf(
f, "%*llu (%*[^)]%*[)] %1s "
"%d %*d %*d %*d %*d %*u "
"%*lu %*lu %*lu %*lu %lu %lu "
"%*ld %*ld %*ld %*ld %ld %*ld %ld",
&state, &ppid, &utime, &stime, &num_threads, &starttime
) ;
fclose(f) ;
if (status != 6) return rb_ary_new() ;
return rb_ary_new_from_args(6,
INT2NUM(ppid),
ULONG2NUM(utime),
ULONG2NUM(stime),
LONG2NUM(num_threads),
rb_str_new(state, 1),
ULL2NUM(starttime)
) ;
}
|
.total_ram ⇒ Object
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# File 'ext/stats/stats.c', line 90
VALUE totalRAM(volatile VALUE obj) {
struct sysinfo buf ;
char status = sysinfo(&buf) ;
if (status != 0) return Qnil ;
return rb_funcall(
ULONG2NUM(buf.totalram),
rb_intern("*"),
1,
ULONG2NUM(buf.mem_unit)
) ;
}
|
.win_width ⇒ Object
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# File 'ext/stats/stats.c', line 84 VALUE winWidth(volatile VALUE obj) { struct winsize w ; ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) ; return INT2NUM(w.ws_col) ; } |