Attachment 696346 Details for Bug 910217 – Script used to execute the steps in re-creating the bug.

Script used to execute the steps in re-creating the bug.

append2log.py (text/x-python), 1.05 KB, created by Pranith Kumar K on 2013-02-12 02:40:25 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Pranith Kumar K

Created: 2013-02-12 02:40:25 UTC

Size: 1.05 KB

patch

obsolete

>#!/usr/bin/python
>#
># append2log.py -- append records to a file with fixed inter-record delay
>#
>import os
>import sys
>import time
>import errno
>
>def usage(msg):
>  print msg
>  print 'usage: append2log file count delay'
>  #print 'environment variables:'
>  sys.exit(1)
>
>try:
>  fn = sys.argv[1]
>  count = int(sys.argv[2])
>  delay = float(sys.argv[3])
>except Exception as e:
>  usage('exception %s while parsing command line arguments %s'%(str(e), str(sys.argv[1:])))
>
>print 'file %s count %d delay %f'%(fn, count, delay)
>
>flags = os.O_APPEND|os.O_WRONLY|os.O_CREAT
>if os.getenv("NO_O_APPEND"):
>  flags &= ~os.O_APPEND
>fd = os.open(fn, flags)
>response_times=[]
>for j in range(0, count):
>  # message response time of write and save it
>  t0 = time.time()
>  os.write(fd, 'line %d\n'%j)
>  t1 = time.time()
>  delta_t = t1 - t0
>  response_times.append(delta_t)
>  time.sleep(delay)
>os.close(fd)
>
># output response times
>
>csv_record = ''
>max_rsp=-1
>for r in response_times: 
>  csv_record += str(r) + ' , '
>  max_rsp = max(max_rsp, r)
>print 'max rsp. time: %f   '%max_rsp
>#print csv_record
>

Actions: View

Attachments on bug 910217: 696346