Can't import psutil

[giampaolo]

From [email protected] on August 01, 2012 15:07:26

What steps will reproduce the problem?  
1. Install psutil 0.5.1 from source (on Linux)
2. python setup.py install
3. >>> import psutil 

What is the expected output?  
psutil should be imported 

What do you see instead?  
michal@cdn-controller:~/psutil-0.5.1$ python
Python 2.6.6 ( r266 :84292, Dec 26 2010, 22:31:48) 
[GCC 4.4.5] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import psutil
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "psutil/__init__.py", line 94, in <module>
    TOTAL_PHYMEM = _psplatform.phymem_usage()[0]
  File "psutil/_pslinux.py", line 140, in phymem_usage
    cached = cached_phymem()
  File "psutil/_pslinux.py", line 121, in cached_phymem
    raise RuntimeError("line not found")
RuntimeError: line not found
>>> 

What version of psutil are you using? What Python version?  
psutil 0.5.1
python 2.6.6 

On what operating system? Is it 32bit or 64bit version?  
Debian 6.0 (Squeeze), 64b, kernel 2.6.32-5-openvz-amd64
I'm running virtualized Linux inside OpenVZ. 

Please provide any additional information below.  
_pslinux.py tries to read "Cached:" in /proc/meminfo, but there is no such line 
in my file:
cat /proc/meminfo
MemTotal:        4194304 kB
MemFree:         3757852 kB
SwapTotal:             0 kB
SwapFree:              0 kB

Original issue: http://code.google.com/p/psutil/issues/detail?id=313

[giampaolo]

From g.rodola on August 01, 2012 06:11:48

Could you please try latest SVN version?
I've been doing a lot of work against memory-related stuff lately so the issue 
at hand might already have been fixed by my changes.

[giampaolo]

From [email protected] on August 01, 2012 06:25:31

SVN version seems to work properly, thanks!

[giampaolo]

From [email protected] on August 02, 2012 04:55:29

However I got another similar problem (with a SVN version of psutil):

>>> psutil.phymem_usage()
__main__:1: DeprecationWarning: psutil.phymem_usage is deprecated
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/pymodules/python2.6/psutil/_common.py", line 101, in inner
    return fun(*args, **kwargs)
  File "/usr/lib/pymodules/python2.6/psutil/__init__.py", line 1063, in 
phymem_usage
    mem = virtual_memory()
  File "/usr/lib/pymodules/python2.6/psutil/__init__.py", line 946, in 
virtual_memory
    return _psplatform.virtual_memory()
  File "/usr/lib/pymodules/python2.6/psutil/_pslinux.py", line 139, in 
virtual_memory
    raise RuntimeError("line(s) not found")
RuntimeError: line(s) not found

[giampaolo]

From g.rodola on August 06, 2012 10:37:53

Heh... that's controversial as I'm not sure what's best to do: fill the missing 
fields with a null (0) value or let the exception propagate. 

> cat /proc/meminfo
> MemTotal:        4194304 kB
> MemFree:         3757852 kB
> SwapTotal:             0 kB
> SwapFree:              0 kB

Is this the whole file content produced on Debian Squeeze? If not can you paste 
the complete output?

[giampaolo]

From [email protected] on August 07, 2012 05:27:12

Yes, unfortunatelly it is. But I don't think it's a Debian issue, but an OpenVZ 
issue. It simply does not include all necessary info:

root@cdn-controller:~# uname -a
Linux cdn-controller.dev 2.6.32-5-openvz-amd64 #1 SMP Tue Jun 14 10:46:15 UTC 
2011 x86_64 GNU/Linux
root@cdn-controller:~# cat /proc/meminfo 
MemTotal:        4194304 kB
MemFree:         2943512 kB
SwapTotal:             0 kB
SwapFree:              0 kB
root@cdn-controller:~#

[giampaolo]

From g.rodola on August 09, 2012 02:11:52

I suppose that's not the only missing piece of information.
Have you tried to run tests?
I expect other failures due to file contents of /proc fs being incomplete or missing.
In that case I think we better off considering OpenVZ an unsupported platform.
I already have enough work on my hands with the other four *major* platforms 
(and another fifth one on the way =)).

[giampaolo]

From g.rodola on August 17, 2012 11:04:04

I modified both virtual_memory() and swap_memory() so that they no longer raise 
an exception in case of missing values not found in /proc fs.
Instead, the missing values are now set to 0 and a RuntimeWarning is raised.
Done in r1534 .

Status: FixedInSVN
Labels: OpSys-Linux Milestone-0.6.2

[giampaolo]

From g.rodola on March 02, 2013 04:11:59

Updated csets after the SVN -> Mercurial migration: r266 == revision 
f910f2f333cc r1534 == revision 29c612ebf39d

[giampaolo]

From g.rodola on March 04, 2013 16:16:45

Labels: -Priority-Medium Priority-High

[giampaolo]

From g.rodola on April 07, 2013 18:21:49

Status: FixedInHG

[giampaolo]

From g.rodola on April 11, 2013 02:17:39

Labels: -Milestone-0.6.2 Milestone-0.7.0

[giampaolo]

From g.rodola on April 12, 2013 11:21:26

Status: Fixed