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Re: mythrename.pl flogs my system if run during recordings.

 

 

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mtdean at thirdcontact

Nov 10, 2009, 10:38 AM

Post #1 of 3 (449 views)
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Re: mythrename.pl flogs my system if run during recordings.

On 11/10/2009 05:15 AM, David Whyte wrote:
> On Tue, Nov 10, 2009 at 8:10 PM, David Whyte <david.whyte [at] gmail> wrote:
>
>> I have uploaded a screenie of my monitoring application (Zabbix) which
>> clearly shows increased load at 15 minute intervals during the
>> afternoons recordings (14:30 - 15:30) and the very high load this
>> evening since I record a number of simultaneous shows, with
>> commflagging etc.
>>
>> http://picasaweb.google.com/lh/photo/WhLOm_EWqa9_iJOUTr7uug?feat=directlink
> Ooops, buggered the permissions. Try again at
> http://picasaweb.google.com/david.whyte/Random?feat=directlink

Don't use mythrename.pl to rename files (I'm assuming that's what you're
doing). It's dangerous, there are parts of myth that break if you do
so, and creating links is infinitely more flexible, anyway.

use:

mythrename.pl --link

Mike
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richard.e.morton at gmail

Nov 10, 2009, 12:05 PM

Post #2 of 3 (393 views)
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Re: mythrename.pl flogs my system if run during recordings. [In reply to]

Even so; yes mythrename will flog your system; especially if you have
lots of recordings.

mythrename deletes all the symlinks and starts again building them
from info in the database. Doing this every 15 minutes is asking alot
for the small number of changes you may see every 15 minutes;
recommendations I have seen suggest every 6, 12 or 24 hours.

In any case; from everything I have read mythtvfs is the preferred way
of doing this now. you mount a mythtvfs instance on a mountpoint and
creates what appear to be symlinks to your recordings.

however, the downside seems to be as it uses FUSE the symlinks are not
visible over samba shares but i am just starting to look at it - maybe
someone can give us an idea if you can (and how) you can share them?

hope that helps.

R


Thanks And Regards,

Richard Morton

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without adverts
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www.mythtv.org - Home media system




2009/11/10 Michael T. Dean <mtdean [at] thirdcontact>:
> On 11/10/2009 05:15 AM, David Whyte wrote:
>>
>> On Tue, Nov 10, 2009 at 8:10 PM, David Whyte <david.whyte [at] gmail>
>> wrote:
>>
>>>
>>> I have uploaded a screenie of my monitoring application (Zabbix) which
>>> clearly shows increased load at 15 minute intervals during the
>>> afternoons recordings (14:30 - 15:30) and the very high load this
>>> evening since I record a number of simultaneous shows, with
>>> commflagging etc.
>>>
>>>
>>> http://picasaweb.google.com/lh/photo/WhLOm_EWqa9_iJOUTr7uug?feat=directlink
>>
>> Ooops, buggered the permissions.  Try again at
>> http://picasaweb.google.com/david.whyte/Random?feat=directlink
>
> Don't use mythrename.pl to rename files (I'm assuming that's what you're
> doing).  It's dangerous, there are parts of myth that break if you do so,
> and creating links is infinitely more flexible, anyway.
>
> use:
>
> mythrename.pl --link
>
> Mike
> _______________________________________________
> mythtv-users mailing list
> mythtv-users [at] mythtv
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>
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david.whyte at gmail

Nov 10, 2009, 2:56 PM

Post #3 of 3 (405 views)
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Re: mythrename.pl flogs my system if run during recordings. [In reply to]

On Wed, Nov 11, 2009 at 4:38 AM, Michael T. Dean
<mtdean [at] thirdcontact> wrote:
> Don't use mythrename.pl to rename files (I'm assuming that's what you're
> doing).  It's dangerous, there are parts of myth that break if you do so,
> and creating links is infinitely more flexible, anyway.
>
> use:
>
> mythrename.pl --link
>


Hi Mike,

Thanks for the response. I am using the --link option, to create a
directory that lists all recordings, which is then shared via samba.

I think I found the problem. I have been messing with cpufreq to
throttle back my server CPU when idle. The default governor was
'ondemand' but for some reason, this would let my CPU (a Pentium D
3.0GHz) remain at 2.40GHz instead of stepping up to 3.0GHz, which
caused the extra load.

I ran mythrename while having the 'performance' governor active and it
seemed much better.

Many thanks for your help,
Whytey
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