Opened at 2005-06-07T16:35:47+02:00
Closed at 2011-09-12T15:31:00+02:00
Last modified at 2011-10-27T12:15:46+02:00
#5 closed enhancement (fixed)
Support for shorter time-periods than 5 minutes
Reported by: | anonymous | Owned by: | kjellm |
---|---|---|---|
Priority: | high | Milestone: | Munin 2.0.0 |
Component: | design | Version: | |
Severity: | normal | Keywords: | None |
Cc: |
Description (last modified by snide)
Attachments (3)
Change History (17)
comment:1 Changed at 2005-11-29T15:30:14+01:00 by janl
comment:2 Changed at 2005-12-02T18:42:43+01:00 by janl
- Milestone Munin 1.4 deleted
- Owner changed from jo to janl
This should probably be postponed for a complete sample scheduling redesign:
- I want nodes to be able to sample themselves and report all data "since the last update" when the updater connects to them. This enables important nodes to be graphed across network downages
- The scheduling must be done with a process rather than a cron-job to obtain good results
- And the more frequent sampling must scale, which probably dictates sharing the job between the server and the node
comment:3 Changed at 2005-12-02T20:40:40+01:00 by janl
- Description modified (diff)
- Milestone set to Munin 1.6
comment:4 Changed at 2006-06-19T23:45:35+02:00 by anonymous
- Cc nobody removed
- Component changed from wiki to design
- Milestone changed from Munin 1.6 to Munin 1.4
- Owner changed from nobody to anonymous
- Priority changed from low to high
- Severity changed from major to normal
- Status changed from new to assigned
Sampling redesign underway.
comment:5 Changed at 2006-06-19T23:45:50+02:00 by anonymous
- Owner changed from anonymous to janl
- Status changed from assigned to new
comment:6 Changed at 2006-10-19T09:48:21+02:00 by janl
- Status changed from new to assigned
comment:7 Changed at 2009-02-27T10:39:02+01:00 by janl
- Owner changed from janl to kjellm
- Status changed from assigned to new
comment:8 Changed at 2009-10-20T16:10:43+02:00 by janl
- Milestone changed from Munin 1.4 to Munin 1.6
comment:9 Changed at 2009-10-21T00:31:08+02:00 by janl
- Version 1.2.3 deleted
Changed at 2009-11-30T16:52:09+01:00 by muhgatus
A patch for UpdateWorker?.pm to support RRD with 30 second sample interval. In order to use it, you have to edit munin-cron to disable munin-update. run munin-update seperately every 30 seconds.
comment:10 Changed at 2010-02-14T14:05:59+01:00 by snide
- Milestone changed from Munin 1.6 to Munin 1.5
- Resolution set to fixed
- Status changed from new to closed
Initial support added in r3322.
munin-update remembers when it was last run and it can be scheduled every minute. Every plugin that have to special config will only be updated every 5 mins.
This enables plugins that are quite expensive to generate but don't vary much to be scheduled only every hour, day, ...
On the other side, sub-minute sampling is quite difficult to have right now, since for now the update is crontab-scheduled.
comment:11 Changed at 2010-02-14T14:08:53+01:00 by snide
- Description modified (diff)
comment:12 Changed at 2011-01-14T11:02:23+01:00 by Dyr
- Resolution fixed deleted
- Status changed from closed to reopened
Am I right - approved part of patch doesn't increase resolution of .rrd files and so are fully useless in getting 1 minute graphs even if specify update_rate?!
comment:13 Changed at 2011-01-14T11:08:13+01:00 by Dyr
30 seconds interval is obviously useless under "usual" conditions but can be useful if do functionality of "real-time" plot like it does in that plugin for Cacti (i.e. in "manual mode" updating).
Moreover, 1 minute interval will be very useful in "crontab-mode", so why don't approve other part of patch, rewrite it before to support 60sec instead of 30sec step?
comment:14 Changed at 2011-09-12T15:31:00+02:00 by snide
- Resolution set to fixed
- Status changed from reopened to closed
current trunk fully supports custom update_rate, and increase resolution of .rrd files accordingly.
Prolly need to implement a check-scheduler so we can graph on intervals down to, say - 5, seconds. Look at doing this together with zoomable graphs.