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Qtractor Warning: Unable to create "trees" RDF storage.
6 February, 2010 - 10:45 — sl
Hello Rui
Qtractor version 0.4.5.1511svn-r1492 installed as rpm using attached rpmbuild spec file and apart from the one warning message appears to be functioning normally...
Start message is:
11:28:23.247 Logging started --- Sa. Feb 6 11:28:23 2010 ---
11:28:23.960 Session closed.
11:28:24.437 New session: "Untitled1".
11:28:24.547 Session started.
Warning: Unable to create "trees" RDF storage.
Performance can be improved by upgrading librdf.
11:28:25.210 Audio connections change.
11:28:25.214 MIDI connections change.
Can you give some hints how to improve/correct RDF storage?
Regards, Simon
PS Would be neat if could you add *.spec to the list of allowable attachments in this forum
| Attachment | Size |
|---|---|
 qtractor-0.4.5.1511svn-r1492.spec_.txt | 5.2 KB |
Forums:
Re: Qtractor Warning: Unable to create "trees" RDF storage.
Simon,
AFAICS, the message is issued by libSLV2 or one of its dependencies (eg. librdf, redland, raptor, whatever). It's not that critical as it might suggest: the alleged loss of performance may only show up when (re)starting a session and it only deals with LV2 plugin enumeration. So, nothing that can prevent you from a good night sleep ;) unless your LV2 collection is immensely huge which I doubt :)
Cheers
7/8 style
hi Rui Nuno Capela,
thanks for qtractor/qranger, but qranger have a problem with 7/8 style. here 1 variation drum style recorded in qranger in 7/8
http://rapidshare.com/files/348293814/style.zip.html
when you play the style, after some seconds the tempo going faster and slower, if you change chords, the style stop for some mili seconds and it play again. it is only one track one loop drum midi, other programs like sonar-cubase-reason............ and others have no problems with this. why i send this file here, because maybe id this a qtractor bug or a user problem,
please help
thanks and regards
Re: 7/8 style
Ahem.
Do you have anything else more uh, rapid than this (not-so-)rapidshare file hosting? I'm just fed up of being nagged to death to download that lousy 2K file, always turned down due to too many users downloading the hell of a crap of files :) And no, I won't pay a dime to get that.
Seeya
RE 7/8
HI,
SORRY for rapidshare link , use this one:
http://www.filedropper.com/style
i hope this one works
thanks and regards
Re: 7/8 style
OK, I could grab it now.
Well, this is a qranger session alright and trouble is I can't test or reproduce this ATM. I don't have a working qranger environment for just that. I'm afraid the behavior you report, delays, glitches or hiccups while changing chords, is very specific to qranger if not exclusive to it. I just can't address the situation from qtractor debugging POV.
However, if you can setup and reproduce an equivalent scenario or procedure the issue arises in qtractor (not qranger), you're more than welcome. Please take note of all the steps and manners that you take to reach any evidence. Otherwise we're simply doing guesstimations :)
OTOH, have you reported the issue to Lionstracs?
hi, i have reported this to
hi,
i have reported this to lionstracs, but no answer becouse qranger was not working, on kubuntu karmic on that time. maybe domenico can reproduce this on qtractor, but i try to install qtractor to. for me i think qranger is working with 4/4 good, but i record one 6/8 one track one loop drum style and i have the same problem as 7/8 style.
thanks for answer
re: 7/8 on qtractor now recorded 7/16
hi,
now recorded with new installed qtractor, but the same result,
i hope you can help with this files. is one track one loop midi drum recorded in 7/16
link:
http://www.filedropper.com/newfolder_11
thanks and regards
re: 7/8 on qtractor now recorded 7/16
I can see/ear now the problem, or so I believe. Thanks for taking the time and patience.
It all seems related to the very short time of your MIDI loops.
Truth is, Qtractor (and Qranger for that matter, being exactly the same engine), doesn't play well with MIDI loops that are shorter than 1-2 seconds in length (absolute time). In fact, it behaves awfully and unpredictably bad. To make things worst, upon that nightmare scenario, the audio/MIDI drift correction often gets in between and starts nagging you, alternating faster and slower MIDI rendering. Not pretty and not what you expect, I'm sure. But is what you're experiencing.
OK, you don't have to know the details, but I would recommend you to make your MIDI loops longer, at least longer than 1-2 seconds, that is suggesting you to replicate and span it over two or three bars.
Please try && tell whether that's reasonable.
Cheers
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