Hi Willard, I have seen this before actually... and I think I know the reason as well... The problem seem to occur during these circumstances:
You have a new installed box and reboot it. Owfs-processes is started Temploggerd is started. It scans the 1-wire bus and creates the html-files and rrd-files. Temploggerd is now working good without any long delays. Time is set to correct date by ntpclient. (From year 2000 to 2008) Temploggerd is now hanging since all rrdtools are taking extremely long time. It seems like rrdtool has problem to rotate away old data from year 2000 and insert new values created year 2008. I have managed to "solve" the hanging by: kill-temploggerd rm /path/temperature.rrd run-temploggerd Try to make sure the date is correct before starting temploggerd in the rc-scripts. Eg. The clock should not only be set in a cronjob. Ntpclient has to be called before temploggerd's rc-startup script. Can you verify if you have stumbled into the same problem as I have experienced before. /Christian -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Willard Korfhage Sent: den 17 januari 2008 05:37 To: OWFS Developers List Subject: [Owfs-developers] rrdtool takes extremely long time to generate images for temploggerd on NSLU2 running Debian I put owfs and temploggerd on an NSLU2 running Debian 4.0r2. Owfs is working, but I couldn't get any of the temploggerd web pages. I traced the problem down to the rrdtool graph function, and for certain parameters it takes a terribly long time to generate pages. Temploggerd generates a cgi file that has an RRD::GRAPH tag to generate the graph image, and that includes instructions to print out the average, min, max and last. I ran the equivalent by running "rddtool graph" by hand, printing out only the max. It turns out that a graph that includes PRINT:2629A880000000tempe:MAX:"%5.1lf C" makes it take 37 minutes to generate the image. If I remove that instruction, it takes 5.7 seconds to generate the image. I tried the version of rrdtools installed by aptitude (1.2.15), and even compiled the latest (1.2.26), and both act the same. Interestingly enough, the print directives work fine on my NSLU2 unit running Unslung 6.8. Some difference between big- and little-ending versions? Willard ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
