Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #41532

Re: Wierd behavior of gc.collect

Show key headers only | View raw

On 03/19/2013 11:47 AM, Bodhi wrote:
> I have a python process that does some operations and is supposed to release memory after those. The issue is that memory is not released (as seen through top). So I do a gc.collect() to see if there is any cycle etc. Immediately after doing the collect memory usage drops as expected, but strangely gc.collect() returns 0.
> This means I cannot find out what the problem is by setting the debug option on gc which is what I usually do to figure out issues like this.
>
> Maybe its that my understanding about it is incorrect, but if gc.collect returned 0, how come some memory was freed?
>

To put it simply, top won't in general show you that things are freed. 
The C libraries for malloc and free will reuse the memory, but not 
usually release it to the operating system.  So it's not usually going 
to show up in 'top.'

There was a long thread on this quite recently, but I can't seem to find 
it right now.


-- 
DaveA

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Wierd behavior of gc.collect Bodhi <amitdev@gmail.com> - 2013-03-19 08:47 -0700
  Re: Wierd behavior of gc.collect Dave Angel <davea@davea.name> - 2013-03-19 12:02 -0400
    Re: Wierd behavior of gc.collect Bodhi <amitdev@gmail.com> - 2013-03-19 09:36 -0700
      Re: Wierd behavior of gc.collect Dave Angel <davea@davea.name> - 2013-03-19 13:13 -0400
        Re: Wierd behavior of gc.collect Bodhi <amitdev@gmail.com> - 2013-03-19 21:51 -0700
        Re: Wierd behavior of gc.collect Bodhi <amitdev@gmail.com> - 2013-03-19 21:51 -0700
    Re: Wierd behavior of gc.collect Bodhi <amitdev@gmail.com> - 2013-03-19 09:36 -0700

csiph-web