Zooming too far = high CPU use rrdtool process

Post by **TheWitness** » Sat Jul 16, 2005 8:23 pm

Can someone attempt to build and install freetype2 2.1.10 that was released in late June. It had some quite significant bug fixes.

TheWitness

Neocron · Post by **Neocron** » Sun Jul 17, 2005 9:27 am

TheWitness wrote:Can someone attempt to build and install freetype2 2.1.10 that was released in late June. It had some quite significant bug fixes.

TheWitness

Finaly

This is exactly what solved the problem.
For gentoo users that don't know how to merge this masked package.

ACCEPT_KEYWORDS="~x86" emerge -v =freetype-2.1.10
(or put it in your package.keywords)

Post by **TheWitness** » Sun Jul 17, 2005 10:07 am

Neocron,

Can you open a bug at the Gentoo home page?

TheWitness

emat · Post by **emat** » Mon Jul 18, 2005 2:30 am

I have opened a bug on bugs.gentoo.org #98125

Neocron: upgrade to freetype-2.1.10 didn't solve the problem on my server.
Did you upgrade something else meanwhile,......?

emat · Post by **emat** » Mon Jul 18, 2005 4:04 am

Hi,

Upgrading to :

sys-libs/glibc-2.3.5

Solved the problem on Gentoo Linux

media-libs/freetype-2.1.9-r1 is also installed

fmangeant · Post by **fmangeant** » Mon Jul 18, 2005 7:50 am

emat wrote:Upgrading to :

sys-libs/glibc-2.3.5

Solved the problem on Gentoo Linux

Hi

same here : upgrading from glibc 2.3.4.20041102-r1 to 2.3.5 (which went "stable" this week-end) seems to solve the CPU & swap problems. Now I can zoom on a graph as much as I want

SithLord · Post by **SithLord** » Tue Jul 19, 2005 9:10 am

Hi, I'm back from vacation so sorry for my lack of participation to the story.

I also confirm that upgrading glibc to 2.3.5 curred the problem ! I can zoom as deeply as I wish and no problem occur in any way now !

Now, for my personal culture : What the hell was doing glibc in order to put rrdtool in such a situation ?

fmangeant · Post by **fmangeant** » Tue Jul 19, 2005 9:26 am

SithLord wrote:Now, for my personal culture : What the hell was doing glibc in order to put rrdtool in such a situation ?

I'm pretty sure this problem occured after installing glibc 2.3.4.20041102-r1, in late march.
Several patches weren't included in the previous release (2.3.4.20040808-r1), some of them about NPTL.

Post by **TheWitness** » Tue Jul 19, 2005 6:46 pm

Very happy this worked out for all. One note Tobi (rrdtool) has made some changes in SVN to rrd_graph.c that is supposed to make graph rendering between 2 and 6 time faster (aka 200-600%). He is looking for some people to grab the latest copy and remake/test.

Are any of you folks interested? Do I need to post the source?

TheWitness

fmangeant · Post by **fmangeant** » Wed Jul 20, 2005 2:44 am

TheWitness wrote:Are any of you folks interested? Do I need to post the source?

Hi Larry

I've grabbed the latest RRDTool SVN snapshot, and here are the results compared to 1.2.10 :

Code: Select all

$ time /tmp/rrd_bench.sh > /tmp/rrd_bench.png

real    0m0.260s
user    0m0.242s
sys     0m0.018s

with 1.2.10, and

Code: Select all

$ time /tmp/rrd_bench.sh > /tmp/rrd_bench.png

real    0m0.200s
user    0m0.184s
sys     0m0.015s

with the latest SVN snapshot. Where is my 600% improvement ?

This is very good news, since the graph I tested with was a pretty simple one (load average), I'll test with more "complex" graphs.

Post by **TheWitness** » Wed Jul 20, 2005 5:29 am

Tobi's SVN note was 2 time's for simple graphs and up-to 6 times for things complex like smoke ping. He may be being optimistic.

Larry

Cacti

Zooming too far = high CPU use rrdtool process

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