{"id":150,"date":"2005-09-19T22:13:52","date_gmt":"2005-09-19T19:13:52","guid":{"rendered":"https:\/\/void.gr\/kargig\/blog\/?p=150"},"modified":"2005-09-19T22:14:03","modified_gmt":"2005-09-19T19:14:03","slug":"collectd-multiple-sensor-patch","status":"publish","type":"post","link":"https:\/\/www.void.gr\/kargig\/blog\/2005\/09\/19\/collectd-multiple-sensor-patch\/","title":{"rendered":"collectd multiple sensor patch"},"content":{"rendered":"

Collectd<\/a> is a very nice program that runs in the background and gathers statistics about various kind of stuff like cpu load , disk activity, memory ,fan speed, temperatures, etc, and then puts them all in nice rrd files. It even has a set of scripts to create the graphs. I had only one problem though, but it was fixable.<\/p>\n

Collectd includes sensor.h from lm_sensor package that contains all the functions about your working temperature\/fan sensors. It works fine if you only use 1 sensor. But I use 2! <\/p>\n

it87-isa-0290
\nAdapter: ISA adapter
\nCPU core: +1.78 V (min = +1.66 V, max = +1.84 V)
\nDDRAM: +1.31 V (min = +1.17 V, max = +1.33 V)
\n3v3 I\/O: +3.22 V (min = +3.14 V, max = +3.47 V)
\n+5V: +5.09 V (min = +4.76 V, max = +5.26 V)
\n+12V: +12.42 V (min = +11.39 V, max = +12.61 V)
\n-12V: -11.47 V (min = -7.17 V, max = -16.76 V)
\n-5V: -4.03 V (min = -2.48 V, max = -10.02 V)
\nStdby: +5.09 V (min = +4.76 V, max = +5.26 V)
\nCPU Fan: 4166 RPM (min = 1599 RPM, div = 4)
\nBOX Fan: 1506 RPM (min = 897 RPM, div = 8 )
\nIT87 T\u00c2\u00b0: +37\u00b0C (low = +15\u00b0C, high = +55\u00b0C) sensor = thermistor <\/p>\n

lm90-i2c-0-4c
\nAdapter: SMBus Via Pro adapter at 5000
\nLM90 T\u00c2\u00b0: +47\u00b0C (low = +15\u00b0C, high = +60\u00b0C)
\nAthlon T\u00c2\u00b0:
\n +53.5\u00b0C (low = +15.0\u00b0C, high = +70.0\u00b0C)
\nLM90 Crit: +70\u00b0C (hyst = +60\u00b0C)
\nCPU Crit: +80\u00b0C (hyst = +70\u00b0C) <\/p>\n<\/blockquote>\n

As you can see I use both it87 and lm90 to get correct results. Collectd creates its rrd databases inside \/var\/lib\/collectd. The sensor rrd file it creates are in the form: <\/p>\n

sensors-fan1.rrd
\nsensors-fan2.rrd
\nsensors-fan3.rrd
\nsensors-temp1.rrd
\nsensors-temp2.rrd
\nsensors-temp3.rrd\n<\/p><\/blockquote>\n

That means it can’t distinguish the different chipsets and overwrites the values if you have 2 chipsets. What I did was patch collectd to rename the rrd files in order to include the sensor name as well. I now have:<\/p>\n

sensors-it87-fan1.rrd
\nsensors-it87-fan2.rrd
\nsensors-it87-fan3.rrd
\nsensors-it87-temp1.rrd
\nsensors-it87-temp2.rrd
\nsensors-it87-temp3.rrd
\nsensors-lm90-temp1.rrd
\nsensors-lm90-temp2.rrd\n<\/p><\/blockquote>\n

The patch is here: Collectd-multi-sensor.patch.gz<\/a>
\nJust apply the patch inside the src dir , recompile and install.<\/p>\n

I am in doubt whether I should contact the author or not about this simple patch…anyway…If you use collectd and have more than 1 sensor running…tell me if it works for you…<\/p>\n

cheers!<\/p>\n","protected":false},"excerpt":{"rendered":"

Collectd is a very nice program that runs in the background and gathers statistics about various kind of stuff like cpu load , disk activity, memory ,fan speed, temperatures, etc, and then puts them all in nice rrd files. It even has a set of scripts to create the graphs. I had only one problem […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ep_exclude_from_search":false,"footnotes":""},"categories":[3],"tags":[],"class_list":["post-150","post","type-post","status-publish","format-standard","hentry","category-linux"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t