[mythtv-users] finding leaks

[Daryl McDonald]

On Mon, Sep 1, 2014 at 1:43 PM, Eric Sharkey <eric at lisaneric.org> wrote:

> On Mon, Sep 1, 2014 at 11:04 AM, Daryl McDonald <darylangela at gmail.com>
> wrote:
> > When the system turned on this morning for a recording the ram usage was
> at
> > 1.5Gb and has steadily climbed to 3.3Gb in one hour doing only one
> > recording. Am I even on the right track?
>
> Probably not.  Valgrind is a powerful tool for catching leaks, but
> it's meant for developers to use.  Generally, you only want to run it
> on unstripped binaries, which means the first step is to compile
> mythtv from sources.  You don't want to use a prepackaged deb/rpm.
> These usually have the symbol table stripped prior to packaging.
>

OK I'm going to stop using it now

>
> But before you do that, why don't you back up a few steps?  What are
> you using to determine your RAM usage?  Which processes are are
> consuming the most memory?  Have you used "top" with sort-by-memory
> (press shift-m)?
>
>From the frontend menu>information center>system status I see ram usage
steadily increase during use.
from what I'm hearing now, probably not a bad thing? my bad.

>
> If you're concerned about leaks during a recording, I wouldn't user
> valgrind to look at mythfrontend.  The frontend process only handles
> playback.  Leaks during a recording would most likely be in the
> backend.  Top will tell you which processes are using the most memory.
> That will tell you where to look.
>
> But most importantly of all, remember that unused memory is wasted
> memory.  The Linux kernel will use any otherwise unused memory to
> cache the filesystem data.  If the memory usage statistic you're
> quoting is inclusive of filesystem cache data, then what you're
> describing is normal and not indicative of a leak.
>
> Eric
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Thanks Eric
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