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improved disk_access.log parser

This commit is contained in:
Arvid Norberg 2009-08-02 03:51:01 +00:00
parent 17cbd99081
commit 0912a9100d
1 changed files with 13 additions and 6 deletions
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19
parse_disk_access.py
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@ -9,14 +9,15 @@ lines = open(sys.argv[1], 'rb').readlines()
# example:
# 16434 read cache: 17
keys = ['read', 'write', 'head movement', 'read', 'write']
colors = ['30f030', 'f03030', '3030f0', '10a010', 'a01010']
style = ['points pointsize 1', 'points pointsize 2', 'lines', 'lines', 'lines']
keys = ['read', 'write', 'head movement', 'seek per read byte', 'seek per written byte']
colors = ['70e070', 'e07070', '3030f0', '10a010', 'a01010']
style = ['points pointtype 1', 'points pointtype 2', 'lines', 'lines', 'lines']
axis = ['x1y1', 'x1y1', 'x1y2', 'x1y2', 'x1y2']
plot = [True, True, False, True, True]
out = open('disk_access_log.dat', 'w+')
time = 5000
time = 1000
last_pos = 0
last_t = 0
@ -50,8 +51,10 @@ for l in lines:
if last_t + time <= t:
movement = '%d' % cur_movement
amount_read = '%d' % cur_read
amount_write = '%d' % cur_write
if cur_read > 0:
amount_read = '%d' % (cur_movement / cur_read)
if cur_write > 0:
amount_write = '%d' % (cur_movement / cur_write)
cur_movement = 0
cur_read = 0
cur_write = 0
@ -65,14 +68,18 @@ out = open('disk_access.gnuplot', 'wb')
print >>out, "set term png size 1200,700"
print >>out, 'set output "disk_access.png"'
print >>out, 'set xrange [0:*]'
print >>out, 'set y2range [0:*]'
print >>out, 'set xlabel "time (ms)"'
print >>out, 'set ylabel "file position"'
print >>out, 'set y2label "bytes / %d second(s)"' % (time / 1000)
print >>out, "set key box"
print >>out, "set tics nomirror"
print >>out, "set y2tics 100"
print >>out, 'plot',
count = 1
for k in keys:
count += 1
if not plot[count-2]: continue
print >>out, ' "disk_access_log.dat" using 1:%d title "%s" with %s lt rgb "#%s" axis %s,' \
% (count, k, style[count-2], colors[count-2], axis[count-2]),
print >>out, 'x=0'