[hmm, after thinking a bit I decided it would be more appropriate here, in
[EMAIL PROTECTED]
Dear colleagues,
any hints to tune rrdtool with ~30k rrd files (approx 2k target devices)?
machine is mostly IO-bound, showing 100% disk load with 8 or sometimes
even 3
mB/s, 300-400 tps (it's 2 SATA300 disks in gmirror)
For example, update algorythm can be changed. Try to not update RRD files
simultaneously, queue update data instead (with timestamps), for example, in
memory, and periodically do a "bulk update" using a single rrdupdate call
for all queue items related to single RRD file. This saves I/O a lot, for
example, in my NMS (TclMon) I use simular scheme, and now it updates >50K
RRD files with 5-10 variables each. I/O load is 100-150 tps with 1-1.5MB/s
throughput.
--
Oleg Derevenetz <[EMAIL PROTECTED]> OOD3-RIPE
Phone: +7 4732 539880
Fax: +7 4732 531415 http://www.vsi.ru
CenterTelecom Voronezh ISP http://isp.vsi.ru
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