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gc_log_visualizer.py
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#!python
import sys
import re
import os
import dateutil.parser
# usage: python gc_log_visualizer.py gc.log
class StwSubTimings:
def __init__(self):
self.reset()
def reset(self):
self.ext_root_scan = 0
self.update_rs = 0
self.scan_rs = 0
self.object_copy = 0
self.termination = 0
self.other = 0
def unknown_time(self, total):
if total:
return int((total * 1000) - self.ext_root_scan - self.update_rs - self.scan_rs - self.object_copy - self.termination - self.other)
else:
return 0
/*
Java 8 G1GC
[Eden: 7136.0M(7136.0M)->0.0B(10.2G) Survivors: 200.0M->184.0M Heap: 13.3G(24.0G)->6510.3M(24.0G)]
2021-12-06T11:07:59.127-0500: 2392835.650: [GC concurrent-root-region-scan-start]
2021-12-06T11:08:00.089-0500: 2392836.613: [GC concurrent-mark-end, 0.8779976 secs]
2021-12-06T11:08:01.446-0500: 2392837.970: [GC concurrent-cleanup-end, 0.0409477 secs]
*/
class LogParser:
heapG1GCPattern = '\s*\[Eden: ([0-9.]+)([BKMG])\(([0-9.]+)([BKMG])\)->[0-9.BKMG()]+ Survivors: ([0-9.]+)([BKMG])->([0-9.]+)([BKMG]) Heap: ([0-9.]+)([BKMG])\([0-9.BKMG]+\)->([0-9.]+)([BKMG])\([0-9.BKMG]+\)'
rootScanStartPattern = '[0-9T\-\:\.\+]* ([0-9.]*): \[GC concurrent-root-region-scan-start\]'
rootScanMarkEndPattern = '[0-9T\-\:\.\+]* ([0-9.]*): \[GC concurrent-mark-end, .*'
rootScanEndPattern = '[0-9T\-\:\.\+]* ([0-9.]*): \[GC concurrent-cleanup-end, .*'
mixedStartPattern = '\s*([0-9.]*): \[G1Ergonomics \(Mixed GCs\) start mixed GCs, .*'
mixedContinuePattern = '\s*([0-9.]*): \[G1Ergonomics \(Mixed GCs\) continue mixed GCs, .*'
mixedEndPattern = '\s*([0-9.]*): \[G1Ergonomics \(Mixed GCs\) do not continue mixed GCs, .*'
exhaustionPattern = '.*\(to-space exhausted\).*'
humongousObjectPattern = '.*request concurrent cycle initiation, .*, allocation request: ([0-9]*) .*, source: concurrent humongous allocation]'
occupancyThresholdPattern = '.*threshold: ([0-9]*) bytes .*, source: end of GC\]'
reclaimablePattern = '.*reclaimable: ([0-9]*) bytes \(([0-9.]*) %\), threshold: ([0-9]*).00 %]'
def __init__(self, input_file):
self.timestamp = None
self.input_file = input_file
self.pause_file = open('pause.dat', "w")
self.young_pause_file = open('young-pause.dat', "w")
self.mixed_pause_file = open('mixed-pause.dat', "w")
self.pause_count_file = open('pause_count.dat', "w")
self.full_gc_file = open('full_gc.dat', "w")
self.gc_file = open('gc.dat', "w")
self.young_file = open('young.dat', "w")
self.root_scan_file = open('rootscan.dat', "w")
self.mixed_duration_file = open('mixed_duration.dat', "w")
self.exhaustion_file = open('exhaustion.dat', "w")
self.humongous_objects_file = open('humongous_objects.dat', "w")
self.reclaimable_file = open('reclaimable.dat', "w")
self.gc_alg_g1gc = False
self.pre_gc_total = 0
self.post_gc_total = 0
self.pre_gc_young = 0
self.pre_gc_young_target = 0
self.post_gc_young = 0
self.pre_gc_survivor = 0
self.post_gc_survivor = 0
self.tenured_delta = 0
self.full_gc = False
self.gc = False
self.root_scan_start_time = 0
self.root_scan_end_timestamp = None
self.root_scan_mark_end_time = 0
self.mixed_duration_start_time = 0
self.mixed_duration_count = 0
self.total_pause_time = 0
self.size = '1024,768'
self.last_minute = -1
self.reset_pause_counts()
self.occupancy_threshold = None
self.stw = StwSubTimings()
def cleanup(self):
os.unlink(self.pause_file.name)
os.unlink(self.young_pause_file.name)
os.unlink(self.mixed_pause_file.name)
os.unlink(self.pause_count_file.name)
os.unlink(self.full_gc_file.name)
os.unlink(self.gc_file.name)
os.unlink(self.young_file.name)
os.unlink(self.root_scan_file.name)
os.unlink(self.mixed_duration_file.name)
os.unlink(self.exhaustion_file.name)
os.unlink(self.humongous_objects_file.name)
os.unlink(self.reclaimable_file.name)
return
def close_files(self):
self.pause_file.close()
self.young_pause_file.close()
self.mixed_pause_file.close()
self.pause_count_file.close()
self.gc_file.close()
self.full_gc_file.close()
self.young_file.close()
self.root_scan_file.close()
self.mixed_duration_file.close()
self.exhaustion_file.close()
self.humongous_objects_file.close()
self.reclaimable_file.close()
def gnuplot(self, name, start, end):
if start is None:
xrange = ""
else:
xrange = "set xrange [ \"%s\":\"%s\" ]; " % (start, end)
# Add a line for the occupancy threshold if found
occupancy_threshold_arrow = ""
if self.occupancy_threshold:
occupancy_threshold_arrow = "set arrow 10 from graph 0,first %d to graph 1, first %d nohead; " % (self.occupancy_threshold, self.occupancy_threshold)
occupancy_threshold_arrow += "set label \"%s\" at graph 0,first %d offset 1,1; " % ('IHOP', self.occupancy_threshold)
# Separate young and mixed stw events
if self.gc_alg_g1gc:
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-stw-young.png\"; set xdata time; set ylabel \"Secs\"; set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; %s plot \"%s\" using 1:2 title \"young\"'" % (self.size, name, xrange, self.young_pause_file.name)
os.system(gnuplot_cmd)
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-stw-mixed.png\"; set xdata time; set ylabel \"Secs\"; set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; %s plot \"%s\" using 1:2 title \"mixed\"'" % (self.size, name, xrange, self.mixed_pause_file.name)
os.system(gnuplot_cmd)
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-stw-all.png\"; set xdata time; " \
"set ylabel \"Secs\"; " \
"set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; " \
"%s " \
"plot \"%s\" using 1:2 title \"young\"" \
", \"%s\" using 1:2 title \"mixed\"'" % (self.size, name, xrange, self.young_pause_file.name, self.mixed_pause_file.name)
os.system(gnuplot_cmd)
# Separate young and mixed stw events
# Stw sub-timings
if self.gc_alg_g1gc:
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-substw-ext-root-scan.png\"; set xdata time; set ylabel \"millis\"; set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; %s plot \"%s\" using 1:3 title \"ext-root-scan\"'" % (self.size, name, xrange, self.pause_file.name)
os.system(gnuplot_cmd)
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-substw-update-rs.png\"; set xdata time; set ylabel \"millis\"; set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; %s plot \"%s\" using 1:4 title \"update-rs\"'" % (self.size, name, xrange, self.pause_file.name)
os.system(gnuplot_cmd)
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-substw-scan-rs.png\"; set xdata time; set ylabel \"millis\"; set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; %s plot \"%s\" using 1:5 title \"scan-rs\"'" % (self.size, name, xrange, self.pause_file.name)
os.system(gnuplot_cmd)
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-substw-object-copy.png\"; set xdata time; set ylabel \"millis\"; set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; %s plot \"%s\" using 1:6 title \"object-copy\"'" % (self.size, name, xrange, self.pause_file.name)
os.system(gnuplot_cmd)
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-substw-termination.png\"; set xdata time; set ylabel \"millis\"; set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; %s plot \"%s\" using 1:7 title \"termination\"'" % (self.size, name, xrange, self.pause_file.name)
os.system(gnuplot_cmd)
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-substw-other.png\"; set xdata time; set ylabel \"millis\"; set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; %s plot \"%s\" using 1:8 title \"other\"'" % (self.size, name, xrange, self.pause_file.name)
os.system(gnuplot_cmd)
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-substw-unknown.png\"; set xdata time; set ylabel \"millis\"; set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; %s plot \"%s\" using 1:9 title \"unknown\"'" % (self.size, name, xrange, self.pause_file.name)
os.system(gnuplot_cmd)
# total pause time
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-total-pause.png\"; set xdata time; set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; %s plot \"%s\" using 1:8 title \"%% of time in gc\"'" % (self.size, name, xrange, self.pause_count_file.name)
os.system(gnuplot_cmd)
# Note: This seems to have marginal utility as compared to the plot of wall time vs. pause time
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-pause-count.png\"; set xdata time; " \
"set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; " \
"%s " \
"plot \"%s\" using 1:2 title \"under-50\" with lines" \
", \"%s\" using 1:3 title \"50-90\" with lines" \
", \"%s\" using 1:4 title \"90-120\" with lines" \
", \"%s\" using 1:5 title \"120-150\" with lines" \
", \"%s\" using 1:6 title \"150-200\" with lines" \
", \"%s\" using 1:7 title \"200+\" with lines'" % (self.size, name, xrange, self.pause_count_file.name, self.pause_count_file.name, self.pause_count_file.name, self.pause_count_file.name, self.pause_count_file.name, self.pause_count_file.name)
os.system(gnuplot_cmd)
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-heap.png\"; set xdata time; " \
"set ylabel \"MB\"; " \
"set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; " \
"%s " \
"%s " \
"plot \"%s\" using 1:2 title \"pre-gc-amount\"" \
", \"%s\" using 1:3 title \"post-gc-amount\"'" % (self.size, name, occupancy_threshold_arrow, xrange, self.gc_file.name, self.gc_file.name)
os.system(gnuplot_cmd)
# Add to-space exhaustion events if any are found
if self.gc_alg_g1gc and os.stat(self.exhaustion_file.name).st_size > 0:
to_space_exhaustion = ", \"%s\" using 1:2 title \"to-space-exhaustion\" pt 7 ps 3" % (self.exhaustion_file.name)
else:
to_space_exhaustion = ""
# line graph of Eden, Tenured and the Total
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-totals.png\"; set xdata time; " \
"set ylabel \"MB\"; " \
"set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; " \
"%s " \
"%s " \
"plot \"%s\" using 1:2 title \"Eden\" with lines" \
", \"%s\" using 1:4 title \"Tenured\" with lines" \
"%s" \
", \"%s\" using 1:5 title \"Total\" with lines" \
", \"%s\" using 1:2 title \"Reclaimable\"'" % (self.size, name, xrange, occupancy_threshold_arrow, self.young_file.name, self.young_file.name, to_space_exhaustion, self.young_file.name, self.reclaimable_file.name)
os.system(gnuplot_cmd)
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-young.png\"; set xdata time; " \
"set ylabel \"MB\"; " \
"set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; " \
"%s " \
"plot \"%s\" using 1:2 title \"current\"" \
", \"%s\" using 1:3 title \"max\"'" % (self.size, name, xrange, self.young_file.name, self.young_file.name)
os.system(gnuplot_cmd)
if self.gc_alg_g1gc:
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-tenured-delta.png\"; set xdata time; " \
"set ylabel \"MB\"; " \
"set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; " \
"%s " \
"plot \"%s\" using 1:6 with lines title \"tenured-delta\"'" % (self.size, name, xrange, self.young_file.name)
os.system(gnuplot_cmd)
if self.gc_alg_g1gc:
# root-scan times
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-root-scan.png\"; set xdata time; set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; %s plot \"%s\" using 1:2 title \"root-scan-duration(ms)\"'" % (self.size, name, xrange, self.root_scan_file.name)
os.system(gnuplot_cmd)
# time from first mixed-gc to last
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-mixed-duration.png\"; set xdata time; set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; %s plot \"%s\" using 1:2 title \"mixed-gc-duration(ms)\"'" % (self.size, name, xrange, self.mixed_duration_file.name)
os.system(gnuplot_cmd)
# count of mixed-gc runs before stopping mixed gcs, max is 8 by default
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-mixed-duration-count.png\"; set xdata time; set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; %s plot \"%s\" using 1:3 title \"mixed-gc-count\"'" % (self.size, name, xrange, self.mixed_duration_file.name)
os.system(gnuplot_cmd)
# to-space exhaustion events
if os.stat(self.exhaustion_file.name).st_size > 0:
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-exhaustion.png\"; set xdata time; set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; %s plot \"%s\" using 1:2'" % (self.size, name, xrange, self.exhaustion_file.name)
os.system(gnuplot_cmd)
# humongous object sizes
if os.stat(self.humongous_objects_file.name).st_size > 0:
gnuplot_cmd = "gnuplot -e 'set term png size %s; set output \"%s-humongous.png\"; set xdata time; set timefmt \"%%Y-%%m-%%d:%%H:%%M:%%S\"; %s plot \"%s\" using 1:2 title \"humongous-object-size(KB)\"'" % (self.size, name, xrange, self.humongous_objects_file.name)
os.system(gnuplot_cmd)
return
def determine_gc_alg(self):
with open(self.input_file) as f:
for line in f:
m = re.match('^CommandLine flags: .*', line, flags=0)
if m:
if re.match(".*-XX:\+UseG1GC.*", line, flags=0):
self.gc_alg_g1gc = True
pct = self.get_long_field(line, '-XX:InitiatingHeapOccupancyPercent', 45)
max = self.get_long_field(line, '-XX:MaxHeapSize')
if pct and max:
self.occupancy_threshold = int(max * (pct / 100.0) / 1048576.0)
return
m = re.match(LogParser.heapG1GCPattern, line, flags=0)
if m:
self.gc_alg_g1gc = True
return
def get_long_field(self, line, field, def_value=0):
m = re.match(".*%s=([0-9]+).*" % field, line, flags=0)
if m:
return int(m.group(1))
else:
return int(def_value)
def parse_log(self):
with open(self.input_file) as f:
for line in f:
# This needs to be first
self.line_has_timestamp(line)
self.line_has_gc(line)
if self.gc_alg_g1gc:
self.collect_root_scan_times(line)
self.collect_mixed_duration_times(line)
self.collect_to_space_exhaustion(line)
self.collect_humongous_objects(line)
self.collect_reclaimable(line)
self.collect_stw_sub_timings(line)
# find the occupance threshold if CommandLine log line not present
if not self.occupancy_threshold:
self.collect_occupancy_threshold_pattern(line)
# This needs to be last
if self.line_has_pause_time(line):
self.output_data()
self.stw.reset()
def output_data(self):
if self.mixed_duration_count == 0:
self.young_pause_file.write(f"{self.timestamp_string()} {self.pause_time}.6f\n")
else:
self.mixed_pause_file.write("%s %.6f\n" % (self.timestamp_string(), self.pause_time))
self.pause_file.write("%s %.6f %d %d %d %d %d %d %d\n" % (self.timestamp_string(), self.pause_time, self.stw.ext_root_scan, self.stw.update_rs, self.stw.scan_rs, self.stw.object_copy, self.stw.termination, self.stw.other, self.stw.unknown_time(self.pause_time)))
self.young_file.write("%s %s %s %s %s %s\n" % (self.timestamp_string(), self.pre_gc_young, self.pre_gc_young_target, self.pre_gc_total - self.pre_gc_young, self.pre_gc_total, self.tenured_delta))
# clean this up, full_gc's should probably graph
# in the same chart as regular gc events if possible
if self.full_gc:
self.full_gc_file.write("%s %s %s\n" % (self.timestamp_string(), self.pre_gc_total, self.post_gc_total))
self.full_gc = False
elif self.gc:
self.gc_file.write("%s %s %s\n" % (self.timestamp_string(), self.pre_gc_total, self.post_gc_total))
self.gc = False
def output_pause_counts(self):
self.pause_count_file.write("%s %s %s %s %s %s %s %s\n" % (self.timestamp_string(), self.under_50, self.under_90, self.under_120, self.under_150, self.under_200, self.over_200, self.total_pause_time * 100 / 60))
def line_has_pause_time(self, line):
m = re.match("[0-9-]*T[0-9]+:([0-9]+):.* threads were stopped: ([0-9.]+) seconds", line, flags=0)
if not m or not (self.gc or self.full_gc):
return False
cur_minute = int(m.group(1))
self.pause_time = float(m.group(2))
self.increment_pause_counts(self.pause_time)
if cur_minute != self.last_minute:
self.last_minute = cur_minute
self.output_pause_counts()
self.reset_pause_counts()
return True
def line_has_timestamp(self, line):
t = line.split()
if t and len(t) > 0:
t = t[0]
if t:
t = t[:-1]
if t and len(t) > 15: # 15 is mildly arbitrary
try:
self.timestamp = dateutil.parser.parse(t)
except (ValueError, AttributeError) as e:
return
return
def timestamp_string(self):
return self.any_timestamp_string(self.timestamp)
def any_timestamp_string(self, ts):
return ts.strftime("%Y-%m-%d:%H:%M:%S")
def collect_root_scan_times(self, line):
m = re.match(LogParser.rootScanStartPattern, line, flags=0)
if m:
if self.root_scan_mark_end_time > 0:
elapsed_time = self.root_scan_mark_end_time - self.root_scan_start_time
self.root_scan_file.write("%s %s\n" % (self.any_timestamp_string(self.root_scan_end_timestamp), elapsed_time))
self.root_scan_mark_end_time = 0
self.root_scan_start_time = int(float(m.group(1)) * 1000)
return
m = re.match(LogParser.rootScanMarkEndPattern, line, flags=0)
if m and self.root_scan_start_time > 0:
self.root_scan_mark_end_time = int(float(m.group(1)) * 1000)
self.root_scan_end_timestamp = self.timestamp
return
m = re.match(LogParser.rootScanEndPattern, line, flags=0)
if m and self.root_scan_start_time > 0:
self.root_scan_end_timestamp = self.timestamp
elapsed_time = int(float(m.group(1)) * 1000) - self.root_scan_start_time
self.root_scan_file.write("%s %s\n" % (self.any_timestamp_string(self.root_scan_end_timestamp), elapsed_time))
self.root_scan_start_time = 0
self.root_scan_mark_end_time = 0
def collect_mixed_duration_times(self, line):
m = re.match(LogParser.mixedStartPattern, line, flags=0)
if m:
self.mixed_duration_start_time = int(float(m.group(1)) * 1000)
self.mixed_duration_count += 1
return
m = re.match(LogParser.mixedContinuePattern, line, flags=0)
if m:
self.mixed_duration_count += 1
return
m = re.match(LogParser.mixedEndPattern, line, flags=0)
if m and self.mixed_duration_start_time > 0:
elapsed_time = int(float(m.group(1)) * 1000) - self.mixed_duration_start_time
self.mixed_duration_count += 1
self.mixed_duration_file.write("%s %s %s\n" % (self.timestamp_string(), elapsed_time, self.mixed_duration_count))
self.mixed_duration_start_time = 0
self.mixed_duration_count = 0
def collect_to_space_exhaustion(self, line):
m = re.match(LogParser.exhaustionPattern, line, flags=0)
if m and self.timestamp:
self.exhaustion_file.write("%s %s\n" % (self.timestamp_string(), 100))
def collect_humongous_objects(self, line):
m = re.match(LogParser.humongousObjectPattern, line, flags=0)
if m and self.timestamp:
self.humongous_objects_file.write("%s %s\n" % (self.timestamp_string(), int(m.group(1)) / 1024))
def collect_occupancy_threshold_pattern(self, line):
m = re.match(LogParser.occupancyThresholdPattern, line, flags=0)
if m:
self.occupancy_threshold = int(int(m.group(1)) / 1048576)
def collect_reclaimable(self, line):
m = re.match(LogParser.reclaimablePattern, line, flags=0)
if m and int(float(m.group(2))) >= int(m.group(3)) and self.timestamp:
self.reclaimable_file.write("%s %d\n" % (self.timestamp_string(), int(m.group(1)) / 1048576))
def collect_stw_sub_timings(self, line):
if re.match('^[ ]+\[.*', line):
self.stw.ext_root_scan = self.parseMaxTiming('Ext Root Scanning', line, self.stw.ext_root_scan)
self.stw.update_rs = self.parseMaxTiming('Update RS', line, self.stw.update_rs)
self.stw.scan_rs = self.parseMaxTiming('Scan RS', line, self.stw.scan_rs)
self.stw.object_copy = self.parseMaxTiming('Object Copy', line, self.stw.object_copy)
self.stw.termination = self.parseMaxTiming('Termination', line, self.stw.termination)
m = re.match('^[ ]+\[Other: ([0-9.]+).*', line)
if m:
self.stw.other = int(float(m.group(1)))
def parseMaxTiming(self, term, line, current_value):
m = re.match("^[ ]+\[%s .* Max: ([0-9]+)\.[0-9],.*" % (term), line)
if m:
return int(float(m.group(1)))
else:
return current_value
def line_has_gc(self, line):
m = re.match(LogParser.heapG1GCPattern, line, flags=0)
if m:
self.store_gc_amount(m)
self.gc = True
return
return
def store_gc_amount(self, matcher):
i = 1
self.pre_gc_young = self.scale(matcher.group(i), matcher.group(i+1))
if self.gc_alg_g1gc:
i += 2
self.pre_gc_young_target = self.scale(matcher.group(i), matcher.group(i+1))
if self.gc_alg_g1gc:
i += 2
self.pre_gc_survivor = self.scale(matcher.group(i), matcher.group(i+1))
i += 2
self.post_gc_survivor = self.scale(matcher.group(i), matcher.group(i+1))
i += 2
self.pre_gc_total = self.scale(matcher.group(i), matcher.group(i+1))
i += 2
self.post_gc_total = self.scale(matcher.group(i), matcher.group(i+1))
if self.gc_alg_g1gc:
self.tenured_delta = (self.post_gc_total - self.post_gc_survivor) - (self.pre_gc_total - self.pre_gc_young - self.pre_gc_survivor)
def scale(self, amount, unit):
rawValue = float(amount)
if unit == 'B':
return int(rawValue / (1024.0 * 1024.0))
elif unit == 'K':
return int(rawValue / 1024.0)
elif unit == 'M':
return int(rawValue)
elif unit == 'G':
return int(rawValue * 1024.0)
return rawValue
def increment_pause_counts(self, pause_time):
self.total_pause_time = self.total_pause_time + pause_time
if pause_time < 0.050:
self.under_50 = self.under_50 + 1
elif pause_time < 0.090:
self.under_90 = self.under_90 + 1
elif pause_time < 0.120:
self.under_120 = self.under_120 + 1
elif pause_time < 0.150:
self.under_150 = self.under_150 + 1
elif pause_time < 0.200:
self.under_200 = self.under_200 + 1
else:
self.over_200 = self.over_200 + 1
def reset_pause_counts(self):
self.under_50 = 0
self.under_90 = 0
self.under_120 = 0
self.under_150 = 0
self.under_200 = 0
self.over_200 = 0
self.total_pause_time = 0
def main():
logParser = LogParser(sys.argv[1])
try:
logParser.determine_gc_alg()
print(("gc alg: g1gc=%s" % (logParser.gc_alg_g1gc)))
logParser.parse_log()
logParser.close_files()
basefilename = sys.argv[2] if len(sys.argv) > 2 else 'default'
start = None
end = None
if len(sys.argv) > 3:
start = sys.argv[3]
end = sys.argv[4]
logParser.gnuplot(basefilename, start, end)
finally:
logParser.cleanup()
if __name__ == '__main__':
main()