[rrd-users] Re: RRDs::graph and mod_perl

[Tobias Oetiker]

Today you sent me mail regarding [rrd-users] RRDs::graph and mod_perl:

*> 
*> I'm using RRDs with mod_perl on a Solaris 8 box with
*> Apache/mod_perl and perl 5.6.0.  The call to RRDs::graph is made
*> with various arguments to print to a file on STDOUT.  RRDs reports
*> no error, but no graph information is sent to STDOUT.  This process
*> works fine without mod_perl.  I've attached the part of a truss
*> output where the problem appears to be occurring.  Any ideas?  I
*> know I could output to a temporary file, print the contents of the
*> temporary file, and then unlink the file (how Bronc does it), but
*> that's extremely inefficient.

with out seeing the relevant script his is difficult to judge, but
you may want to take a look at the example scripts to see how to
get data back from the RRDs::graph function 

cheers
tobi
*> 
*> Any ideas?
*> 
*> Philip
*> 
*> ps. filenames have been changed to protect the innocent
*> 
*> -----TRUSS OUTPUT-----
*> # Printing out debug before the graph call begins
*> 10909:  write(2, " -\n - a P N G\n - h   1".., 1140)    = 1140
*> 10909:  write(2, "\n", 1)                               = 1
*> 10909:  time()                                          = 965141926
*> 10909:  time()                                          = 965141926
*> 10909:  time()                                          = 965141926
*> 10909:  open("CPU-cpu.rrd", O_RDONLY)  = 6
*> 10909:  fstat64(6, 0xFFBEE220)                          = 0
*> 10909:  ioctl(6, TCGETA, 0xFFBEE1AC)                    Err#25 ENOTTY
*> 10909:  read(6, " R R D\0 0 0 0 1\0\0\0\0".., 8192)     = 8192
*> 10909:  llseek(6, 0, SEEK_CUR)                          = 8192
*> 10909:  lseek(6, 3569352, SEEK_SET)                     = 3569352
*> 10909:  lseek(6, 196296, SEEK_SET)                      = 196296
*> 10909:  read(6, " @ %A6AE9A06 0F8 @  87BB".., 8192)     = 8192
*> 10909:  read(6, " @11BE z v\b E ` @10FC m".., 8192)     = 8192
*> 10909:  llseek(6, 0xFFFFFFFFFFFFE420, SEEK_CUR)         = 205544
*> 10909:  close(6)                                        = 0
*> 10909:  brk(0x0060B000)                                 = 0
*> 10909:  brk(0x00625800)                                 = 0
*> 10909:  ioctl(1, TCGETA, 0xFFBEDFDC)                    Err#6 ENXIO
*> 10909:  fstat64(1, 0xFFBEE050)                          = 0
*> 10909:  brk(0x00641000)                                 = 0
*> 10909:  brk(0x0065D800)                                 = 0
*> 10909:  write(2, " g r a p h :   W e   p r".., 31)      = 31
*> 10909:  write(2, "\n", 1)                               = 1
*> # Printing out debug after the graph call finishes
*> 
*> * Philip Molter
*> * Data Foundry International
*> * http://www.datafoundry.net/
*> * philip at datafoundry.net
*> 
*> --
*> Unsubscribe mailto:rrd-users-request at list.ee.ethz.ch?subject=unsubscribe
*> Help        mailto:rrd-users-request at list.ee.ethz.ch?subject=help
*> Archive     http://www.ee.ethz.ch/~slist/rrd-users
*> WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi
*> 
*> 

-- 
 ______    __   _
/_  __/_  / /  (_) Oetiker, Timelord & SysMgr @ EE-Dept ETH-Zurich
 / // _ \/ _ \/ / TEL: +41(0)1-6325286  FAX:...1517  ICQ: 10419518 
/_/ \.__/_.__/_/ oetiker at ee.ethz.ch http://ee-staff.ethz.ch/~oetiker


--
Unsubscribe mailto:rrd-users-request at list.ee.ethz.ch?subject=unsubscribe
Help        mailto:rrd-users-request at list.ee.ethz.ch?subject=help
Archive     http://www.ee.ethz.ch/~slist/rrd-users
WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi