Hi,
Henrik Stoerner wrote :
On Fri, Jan 19, 2007 at 10:55:05AM +0100, Charles Goyard wrote:
Gildas Le Nadan wrote :
The TRACKMAX feature is really interesting as the max values get
"diluted" in the week/month/year views.
Alas, it seem to only work for NCV values at the moment (and I wish I
could use it for cpu/memory/network/disk).
Charles, Henrik, do you think this is feasible?
I agree it would be nice.
[...] and it would only have effect on new
RRD files that are created, not any existing ones.
However, there has also been some requests to increase the granularity
of the stored data, e.g. to keep 7 days worth of 5-minute averages as
opposed to the current 2 days. And likewise for the other RRA's.
So if we're going to add MAX/MIN tracking to the RRD-files, we might as
well do it at the same time that we change the granularity. The numbers
I've been thinking of are to keep
* 30 days of 5-minute averages
* 90 days of 15-minute averages
* 360 days on 1-hour averages
* 1080 days of 3-hour averages
The "la_params[]" is a static table, so this is initialized at
compile-time with the static values.
Very nice design, great (thanks for the quick course). And d'oh!, too. I
expected run-time setting, not compile-time. I had in mind a config
file option. It won't be that bad to have the values of RRAS in the
hobbitserver.cfg, read once at start. That would let you provide a few
typical setups (with the current one enabled by default). At the very
least, it can be a setting in the Makefile.
We also have to keep in mind that TRACKMAX (and TRACKMIN) is a
per-statusname option, not a global setting.
I can take some time next week to add these features into hobbit, if we
agree on how to do it. I propose a setting in hobbitserver.cfg for RRAS
like :
# hobbitserver.cfg sample
# standard setup -- fits most needs
rra = "RRA:AVERAGE:0.5:1:576";
rra = "$rra RRA:AVERAGE:0.5:6:576";
rra = "$rra RRA:AVERAGE:0.5:24:576";
rra = "$rra RRA:AVERAGE:0.5:288:576";
rramax = "RRA:MAX:0.5:1:576";
rramax = "$rramax RRA:MAX:0.5:6:576";
rramax = "$rramax RRA:MAX:0.5:24:576";
rramax = "$rramax RRA:MAX:0.5:288:576";
rramin = "RRA:MIN:0.5:1:576";
rramin = "$rramin RRA:MIN:0.5:6:576";
rramin = "$rramin RRA:MIN:0.5:24:576";
rramin = "$rramin RRA:MIN:0.5:288:576";
# larger data retention
( for today the numbers are provided as an example )
#rra = "RRA:AVERAGE:0.5:1:8640";
#rra = "$rra RRA:AVERAGE:0.5:6:8640";
#rra = "$rra RRA:AVERAGE:0.5:24:8640";
#rra = "$rra RRA:AVERAGE:0.5:288:8640";
#
#rramax = "RRA:MAX:0.5:1:576";
#rramax = "$rramax RRA:MAX:0.5:6:8640";
#rramax = "$rramax RRA:MAX:0.5:24:8640";
#rramax = "$rramax RRA:MAX:0.5:288:8640";
#
#rramin = "RRA:MIN:0.5:1:576";
#rramin = "$rramin RRA:MIN:0.5:6:8640";
#rramin = "$rramin RRA:MIN:0.5:24:8640";
#rramin = "$rramin RRA:MIN:0.5:288:8640";
I (or anybody) can provide dump/restore tools along with hobbit, too.
Regards,
--
Charles Goyard - user-98f9625a7a59@xymon.invalid - (+33) 1 45 38 01 31