Bug 192876

Summary:	parse-metadata (and other zmd helpers?) is not niced
Product:	[openSUSE] SUSE Linux 10.1	Reporter:	Martin Vidner <mvidner>
Component:	Zenworks	Assignee:	Chris Rivera <crivera>
Status:	RESOLVED WONTFIX	QA Contact:	Mauro Parra Miranda <mauro>
Severity:	Major
Priority:	P5 - None	CC:	aj, andreas.hanke, suse-beta
Version:	Final
Target Milestone:	---
Hardware:	Other
OS:	Other
Whiteboard:
Found By:	Other	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Martin Vidner 2006-07-17 15:16:36 UTC

I have noticed that parse-metadata (from libzypp-zmd-backend) is running with nice 0 even during the periodical updates.

Here's a conversation between me and Tambet:

<mvidner> the periodical update is a classic example of a "background" task
<tambet> it's not only periodical
<mvidner> it needs to be done, but should not get in the way. so it should be niced. it may take longer, but the rest of the system will perform better
<tambet> it also gets called when you do 'rug sa' for example
<tambet> or for any command that wakes zmd up
<mvidner> well, then we need to distinguish
<tambet> that 'periodical' thing happens by default once in 24 hours
<tambet> I don't think it's worth it to add hacks for it in the abstracted code
<tambet> the service implementation has no idea what's calling it and that's how it should be
<mvidner> I disagree. there should be a parameter to distinguish foreground and background
<tambet> it's a daemon, it's not a foreground and backround thing
<tambet> it's always backround
<mvidner> tambet: no. sometimes it wakes up at users command (rug sa) -> foreground. other times it does periodical bookkeeping -> background
<tambet> well, anyway, feel free to open a bug about it, but don't assign it to me, you already know my opinion :)

Comment 1 Federico Lucifredi 2006-10-11 23:53:28 UTC

is this still the case ? AJ, can you investifigate this on the European side please ?

Comment 2 Martin Vidner 2006-10-13 12:51:48 UTC

yes, still the case.

gizo:~ # rpm -q rug zmd libzypp{,-zmd-backend}
rug-7.1.1.0-36
zmd-7.1.100.0-9
libzypp-2.2.3-2
libzypp-zmd-backend-7.1.1.0_0.4-8
gizo:~ # cat /etc/SuSE-release
openSUSE 10.2 (i586) Alpha5
VERSION = 10.2

Comment 4 Chris Rivera 2006-10-26 22:19:56 UTC

I agree with Tambet here.  The real problem is parse-metadata's performance (CPU, memory, and time).  That is what really needs to be addressed.  I also don't think it's worth the effort adding code to zmd to do this.