[rrd-users] rrd tool in infinite loop when opening /etc/localtime

[js]

Hi all,

rrdtool generates 100% cpu and is in an infinite loop in some cases such as:

When I zoom in to a very small region the rrdtool process hangs with 
100% cpu usage.
On my system it is allways reproducable.

/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start=1121167317 \
--end=1121167660 \
--title="Localhost - Processes" \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale-max \
--lower-limit=0 \
COMMENT:"From 2005/07/12 13\:21\:57 To 2005/07/12 13\:27\:40\c" \
COMMENT:" \n" \
--vertical-label="processes" \
--slope-mode \
DEF:a="/var/www/localhost/htdocs/cacti/rra/localhost_proc_7.rrd":proc:AVERAGE 
\
AREA:a#F51D30:"Running Processes" \
GPRINT:a:LAST:"Current\:%8.0lf" \
GPRINT:a:AVERAGE:"Average\:%8.0lf" \
GPRINT:a:MAX:"Maximum\:%8.0lf"


rrdtool 1.2.10 is linked against:

 linux-gate.so.1 =>  (0xffffe000)
        librrd.so.2 => /usr/lib/librrd.so.2 (0x40017000)
        libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x4005a000)
        libpng.so.3 => /usr/lib/libpng.so.3 (0x400c9000)
        libz.so.1 => /lib/libz.so.1 (0x400fa000)
        libart_lgpl_2.so.2 => /usr/lib/libart_lgpl_2.so.2 (0x4010a000)
        libm.so.6 => /lib/libm.so.6 (0x40120000)
        libc.so.6 => /lib/libc.so.6 (0x40142000)
        /lib/ld-linux.so.2 (0x40000000)

CFLAGS="-O2 -march=pentium4 -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"


when doing a strace I see an infinite loop like this:

open("/etc/localtime", O_RDONLY)        = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=1067, ...}) = 0
close(3)                                = 0
open("/etc/localtime", O_RDONLY)        = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=1067, ...}) = 0
close(3)                                = 0
open("/etc/localtime", O_RDONLY)        = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=1067, ...}) = 0
close(3)                                = 0
open("/etc/localtime", O_RDONLY)        = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=1067, ...}) = 0
close(3)                                = 0


/etc/localtime is symlinked against /usr/share/zoneinfo/Europe/Brussels
I've tried symlinking to other timezones.  No difference.

There are several people mentioning this behaviour on the cacti forums,.....


Any news on this?

Greetings

Jelle S.

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