Process I/O statistics

[giampaolo]

From [email protected] on September 17, 2009 08:34:14

Added procedures for getting a statistics of process IO. These procedures
based on procedures which already exist in project. Implemented only for Linux.

Modifyed files: _pslinux.py, _psutil.py

Note: info for procedures needs to be checked. I haven't enough english for
writing so complicated texts. Sorry :)

Attachment: akanashin.patch

Original issue: http://code.google.com/p/psutil/issues/detail?id=64

[giampaolo]

From [email protected] on September 17, 2009 01:19:34

Thanks.
Setting milestone to 0.2.0 for now.

Summary: Process I/O statistics
Labels: -Type-Defect Type-Enhancement Milestone-0.2.0 Progress-0in4

[giampaolo]

From [email protected] on March 01, 2010 07:56:12

Labels: -Milestone-0.2.0

[giampaolo]

From g.rodola on September 24, 2010 16:40:43

Status: PostPoned

[giampaolo]

From g.rodola on November 19, 2010 14:21:27

Re-opening as I'd like to see this implemented in 0.2.1.
On Windows this can be easily done with GetProcessIoCounters: 
http://msdn.microsoft.com/en-us/library/ms684125(v=VS.85).aspx ...which also includes the number of bytes read and written.

Still have no idea about BSD and OSX though.

Status: ReOpened
Labels: Milestone-0.2.1

[giampaolo]

From g.rodola on December 28, 2010 23:01:02

Implemented on Linux in r880 .
This is exposed as a "get_io_counters" method and return a namedtuple including 
the number of bytes read/written and the number of read/write calls performed by the process:

>>> psutil.Process(os.getpid()).get_io_counters()
io(read_count=6935640, write_count=1045044, read_bytes=0, write_bytes=1052672)

Status: Accepted
Labels: -Progress-0in4 Progress-1in4

[giampaolo]

From g.rodola on December 29, 2010 11:01:43

Implemented on Windows as r881 .

Labels: -Progress-1in4 Progress-2in4

[giampaolo]

From g.rodola on December 29, 2010 11:15:45

Implemented for FreeBSD in r882 .
There's apparently no way to determine bytes count on FreeBSD, hence I returned -1 for them:

>>> p.get_io_counters()
io(read_count=0, write_count=5, read_bytes=-1, write_bytes=-1)

Status: Started
Labels: -Progress-2in4 Progress-3in4

[giampaolo]

From g.rodola on January 13, 2011 02:45:37

Cc: guichaz

[giampaolo]

From g.rodola on February 17, 2011 07:37:49

If we exclude getrusage(): http://www.manpagez.com/man/2/getrusage/ ...which 
provides IO statistics only for the current process and/or its children it seems we can't retrieve any per-process IO statistic on OSX.

[giampaolo]

From g.rodola on March 05, 2011 05:28:22

Status: FixedInSVN

[giampaolo]

From g.rodola on March 20, 2011 14:55:36

Status: Fixed

[giampaolo]

From [email protected] on October 14, 2011 08:22:15

I haven't been able to find any way to do this via a C API.  I have found that 
we might be able to get this information via dtrace but I'm not sure that's a route we want to take.  Thoughts?

[giampaolo]

From g.rodola on March 02, 2013 03:50:41

Updated csets after the SVN -> Mercurial migration: r880 == revision 09c67ca37366 r881 == revision 64c1642d3e1f r882 == revision 2e38c0ac2c69