[Voyage-linux] Problem creating database on alix

[Kim-man 'Punky' TSE]

Hi,

I seems to get some reports on updating database on 0.9.2.

One test case would be reading 24/44.1 wav file for database. This eats CPUs but not memory.

My recommendation would be a verbose log_level to trace, add

log_level                      "verbose"

to /etc/mpd.conf, restart mpd, and monitor the log /var/log/mpd/mpd.log

When mpd increase CPU, look at near the end of the log and locate what songs it is reading.  A successful reading of 
file would be:

Feb 04 05:38 : update: reading public/wav/09 So Sad.wav
Feb 04 05:38 : update: added public/wav/09 So Sad.wav

Your log will not show "update: added ..." after "update: reading ..." message if the song is problematic to mpd, e.g.

Feb 04 05:38 : update: reading public/XXXX.wav

Regards,
Punky

On 2/4/2014 4:03 AM, Gianluca Bonalumi wrote:
> Hi kim, I'm struggling to find a solution to the database creation problem, I've cutted down to the fact that it seems 
> to be a memory leak problem, I've tried 2 more pc's other than the Alix, one with 1Gb of ram and the other with 6Gb 
> (voyage uses only 2,5Gb) and noted that when launching the database update, looking at memory with the top command, it 
> starts to eat memory at a rate of 5Kib a second more or less. The Alix hangs only after 1 or 2 minutes from start of 
> the update, the PC with 1Gb works for 8-10 minutes at least and the one with 2,5Gb works for half an hour, but for all 
> 3 when the memory is very low the result is the same, mpd hangs. I've tried to reinstall all (0.9.2), and also with 
> differents USB key, tried to eliminate the buffer in mpd.conf but any try was with no luck...I'm really down, I like 
> so much the combination of Alix and mpd and since bought it from you, it has worked for more than a year with no 
> problem at all (apart from occasional WaveIO problems on startup...). I've also tried mpdpup that has mpd version 17.0 
> or 17.2, don't remember well, but got the same problem.
>
> Please, have you got any clue? I've also resetted completely the router, changed NAS, PSU, tried with and without 
> WaveIO connected but no way.
>
> Thanks in advance for your support, Best Regards.
>
>     .·´¨¨))  -:¦:-
> -:¦:-  ¸.·´  .·´¨¨))
>     ((¸¸.·´   .·´  -:¦:-GiAnLuCa
>        -:¦:- ((¸¸.·´
>
>
>
> 2014-01-20 Gianluca Bonalumi <bonalux.lc8 at gmail.com <mailto:bonalux.lc8 at gmail.com>>:
>
>     Hi Kim, thanks for your quick reply. I've managed easily to create a swap file on the SD, the problem is that
>     looking at the memory use (using TOP command) even with the swap file active the system uses only ram, not even a
>     byte of the swap. Is the system locked in ram in some way? Thank you, best regards.
>
>         .·´¨¨))  -:¦:-
>     -:¦:-  ¸.·´  .·´¨¨))
>         ((¸¸.·´   .·´  -:¦:-GiAnLuCa
>            -:¦:- ((¸¸.·´
>
>
>
>     2014/1/20 Kim-man 'Punky' TSE <punkytse at punknix.com <mailto:punkytse at punknix.com>>
>
>         Hi,
>
>         This wiki may help you:
>
>         https://wiki.debian.org/Swap
>
>
>
>         On 1/19/2014 6:49 AM, Gianluca Bonalumi wrote:
>
>             Hi all, I'm having problems rebuilding the database on my alix after reinstalling voyage-mpd-0.9.2 (but
>             the same problem was present before), probably due to low ram. It starts regularly with the update but
>             after few minutes mpd crashes.
>             I've tried to add a swapfile but the kernel is ignoring it and it's not used, anyone knows how can I
>             temporarily force mpd to run on a swap file? I'm a noob on linux.
>
>             Thank you.
>
>                 .·´¨¨))  -:¦:-
>             -:¦:-  ¸.·´  .·´¨¨))
>                 ((¸¸.·´   .·´  -:¦:-GiAnLuCa
>                    -:¦:- ((¸¸.·´
>
>
>
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>
>
>
>         -- 
>         Regards,
>         Kim-man "Punky" Tse
>
>         * Open Source Embedded Solutions and Systems
>           - Voyage Linux (http://linux.voyage.hk)
>           - Voyage MPD   (http://linux.voyage.hk/voyage-mpd)
>           - Voyage MuBox (http://mubox.voyage.hk)
>         * Voyage Store   (http://store.voyage.hk)
>
>
>


-- 
Regards,
Kim-man "Punky" Tse

* Open Source Embedded Solutions and Systems
   - Voyage Linux (http://linux.voyage.hk)
   - Voyage MPD   (http://linux.voyage.hk/voyage-mpd)
   - Voyage MuBox (http://mubox.voyage.hk)
* Voyage Store   (http://store.voyage.hk)