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How to solve “iozone 3324 find_fast_cwd: WARNING: Couldn't compute FAST_CWD pointer”?

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0

I am trying to run iozone in throughput mode using python as a part of my script. Here is my python code snippet.

WIN_IOZONE_COMMAND = '"C:\Program Files (x86)BenchmarksIozone3.405iozone.exe" -i 0 -i 1 -s 1M -r 1M -t 4'

result = subprocess.Popen(WIN_IOZONE_COMMAND, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)

However I get the following error.

Error occured on 03/25/19 11:58:22
 1 [main] iozone 3324 find_fast_cwd: WARNING: Couldn't compute FAST_CWD pointer. Please report this problem to
the public mailing list cygwin@cygwin.com
21887478 [main] iozone 3324 exception::handle: Exception: STATUS_ACCESS_VIOLATION
22022873 [main] iozone 3324 open_stackdumpfile: Dumping stack trace to iozone.exe.stackdump

I have tried installing the latest version of cygwin and replacing cygwin.dll present in the iozone folder, but still i am not able to solve the error. Please help!

P.S - I am able to run the same command through cmd without any errors.

python cygwin iozone

share|improve this question

edited Mar 25 at 7:04

firefly996

asked Mar 25 at 6:57

firefly996firefly996

115

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  the warning is unrelated to the error cygwin.com/faq.html#faq.using.fixing-find_fast_cwd-warnings
  
  – matzeri
  Mar 25 at 11:56
  

  
  
  
  

add a comment | 

0

I am trying to run iozone in throughput mode using python as a part of my script. Here is my python code snippet.

WIN_IOZONE_COMMAND = '"C:\Program Files (x86)BenchmarksIozone3.405iozone.exe" -i 0 -i 1 -s 1M -r 1M -t 4'

result = subprocess.Popen(WIN_IOZONE_COMMAND, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)

However I get the following error.

Error occured on 03/25/19 11:58:22
 1 [main] iozone 3324 find_fast_cwd: WARNING: Couldn't compute FAST_CWD pointer. Please report this problem to
the public mailing list cygwin@cygwin.com
21887478 [main] iozone 3324 exception::handle: Exception: STATUS_ACCESS_VIOLATION
22022873 [main] iozone 3324 open_stackdumpfile: Dumping stack trace to iozone.exe.stackdump

I have tried installing the latest version of cygwin and replacing cygwin.dll present in the iozone folder, but still i am not able to solve the error. Please help!

P.S - I am able to run the same command through cmd without any errors.

python cygwin iozone

share|improve this question

edited Mar 25 at 7:04

firefly996

asked Mar 25 at 6:57

firefly996firefly996

115

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  the warning is unrelated to the error cygwin.com/faq.html#faq.using.fixing-find_fast_cwd-warnings
  
  – matzeri
  Mar 25 at 11:56
  

  
  
  
  

add a comment | 

I am trying to run iozone in throughput mode using python as a part of my script. Here is my python code snippet.

WIN_IOZONE_COMMAND = '"C:\Program Files (x86)BenchmarksIozone3.405iozone.exe" -i 0 -i 1 -s 1M -r 1M -t 4'

result = subprocess.Popen(WIN_IOZONE_COMMAND, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)

However I get the following error.

Error occured on 03/25/19 11:58:22
 1 [main] iozone 3324 find_fast_cwd: WARNING: Couldn't compute FAST_CWD pointer. Please report this problem to
the public mailing list cygwin@cygwin.com
21887478 [main] iozone 3324 exception::handle: Exception: STATUS_ACCESS_VIOLATION
22022873 [main] iozone 3324 open_stackdumpfile: Dumping stack trace to iozone.exe.stackdump

I have tried installing the latest version of cygwin and replacing cygwin.dll present in the iozone folder, but still i am not able to solve the error. Please help!

P.S - I am able to run the same command through cmd without any errors.

python cygwin iozone

share|improve this question

edited Mar 25 at 7:04

firefly996

asked Mar 25 at 6:57

firefly996firefly996

115

WIN_IOZONE_COMMAND = '"C:\Program Files (x86)BenchmarksIozone3.405iozone.exe" -i 0 -i 1 -s 1M -r 1M -t 4'

result = subprocess.Popen(WIN_IOZONE_COMMAND, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)

Error occured on 03/25/19 11:58:22
 1 [main] iozone 3324 find_fast_cwd: WARNING: Couldn't compute FAST_CWD pointer. Please report this problem to
the public mailing list cygwin@cygwin.com
21887478 [main] iozone 3324 exception::handle: Exception: STATUS_ACCESS_VIOLATION
22022873 [main] iozone 3324 open_stackdumpfile: Dumping stack trace to iozone.exe.stackdump

share|improve this question

edited Mar 25 at 7:04

firefly996

asked Mar 25 at 6:57

firefly996firefly996

115

share|improve this question

edited Mar 25 at 7:04

firefly996

asked Mar 25 at 6:57

firefly996firefly996

115

asked Mar 25 at 6:57

firefly996firefly996

115

asked Mar 25 at 6:57

firefly996firefly996

115