High CPU usage with "rrdtool graph"

fmangeant · **Posted:** Tue Jul 05, 2005 8:29 am

Hi all

I'm having some CPU usage problems with Cacti, sometimes up to 100% percent is taken by RRDtool when building a graph. It occurs with any kind of graph.

By using strace, I can see that the rrdtool process is in an infinite loop :

Code:

open("/etc/localtime", O_RDONLY)        = 9
fstat64(9, {st_mode=S_IFREG|0644, st_size=1082, ...}) = 0
close(9)                                = 0
open("/etc/localtime", O_RDONLY)        = 9
fstat64(9, {st_mode=S_IFREG|0644, st_size=1082, ...}) = 0
close(9)                                = 0
open("/etc/localtime", O_RDONLY)        = 9
fstat64(9, {st_mode=S_IFREG|0644, st_size=1082, ...}) = 0
close(9)                                = 0

Has someone already seen this problem ?
I'll post on the rrd-users mailing list...

Thanks in advance.

TheWitness · **Posted:** Tue Jul 05, 2005 3:27 pm

RUZooming Graphs?

fmangeant · **Posted:** Wed Jul 06, 2005 2:43 am

TheWitness wrote:

RUZooming Graphs?

Well, I'm not sure :oops:

A lot of people are viewing our graphs.

Before killing one of the RRDtool processes, I noticed that "end - start" = 86400, so this one wasn't a zoom.

TheWitness · **Posted:** Wed Jul 06, 2005 7:24 am

I am on vacation and will be back on the 9th. I believe this to be associated with the new RRDtool. Will post a fix/information when I get back to town.

TheWitness

fmangeant · **Posted:** Wed Jul 06, 2005 8:24 am

Hi Larry

have a nice holidays !

I've sent a description of my problem to Tobi, I also think it's a bug in RRDtool.

TheWitness · **Posted:** Wed Jul 06, 2005 4:38 pm

Ok.

emat · **Joined:** Wed Jun 01, 2005 6:09 pm **Posts:** 34

I just got the same result!
http://forums.cacti.net/viewtopic.php?p=36865#36865

The strace gives the same output as fmangeant says.

TheWitness · **Posted:** Sat Jul 16, 2005 8:21 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

emat · **Joined:** Wed Jun 01, 2005 6:09 pm **Posts:** 34

Hello

Just installed freetype2 2.1.10.

No luck, everything is still the same,... :cry:

TheWitness · **Posted:** Sun Jul 17, 2005 8:50 am

How bout 2.1.8?

TheWitness

TheWitness · **Posted:** Sun Jul 17, 2005 10:09 am

emat,

Word is that 2.1.10 fixed the problem in Gentoo. Check the other post and let's see what the other guys find. Also, someone needs to open bug's with the Linux vendors.

TheWitness

emat · **Joined:** Wed Jun 01, 2005 6:09 pm **Posts:** 34

Where did you hear or read this? Could you point me to your source please?

Thanks

TheWitness · **Posted:** Sun Jul 17, 2005 12:32 pm

http://forums.cacti.net/viewtopic.php?t=8300&start=30

High CPU usage with "rrdtool graph"

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