[rrd-users] 100% CPU usage with rrdgraph

[Frédéric Mangeant]

Hi Tobi

I'm using Cacti 0.8.6f to graph ~ 650 servers / 4400 graphs.
My system specs are the following :

Gentoo Linux - Kernel 2.6.11.5 - Dell PowerEdge 750 (P4 HT 2.8 GHz, 2x36 
Gb, 1Gb)
MySQL 4.0.24 - Net-SNMP 5.2.1 - Apache 2.0.54 - PHP 4.3.11 - RRDtool 
1.2.6 - Perl 5.8.6

 From times to times, RRDtool takes up to 100% CPU when building a 
graph, and I have to "kill -9" the rrdtool processes :-(

With strace, I saw that it was in an infinite loop :

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

/etc/localtime is a symlink to /usr/share/zoneinfo/Europe/Paris

Do you think this problem has been fixed in RRDtool 1.2.10, or in the 
SVN version ?

Many thanks in advance.

-- 

Frédéric Mangeant

Steria EDC Sophia-Antipolis




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