kevin brintnall wrote: > On Mon, Nov 17, 2008 at 12:14:04PM -0600, Sfiligoi Igor wrote: >> Running a simple open/update/close loop, I get ~9 updates per second: > > Igor, what kind of rates can you get with RRD update on the same hardware? >
I get ~350 updates per second using plain rrdtool update invocations: bash-3.2$ rrdtool create t1.rrd DS:val:GAUGE:300:0:200000 RRA:LAST:0.9:1:100 bash-3.2$ date; for ((i=0; $i<10000; i++)); do rrdtool update t1.rrd N:$RANDOM; done; date Mon Nov 17 12:40:20 CST 2008 Mon Nov 17 12:40:48 CST 2008 bash-3.2$ date; for ((i=0; $i<10000; i++)); do rrdtool update t1.rrd N:$RANDOM; done; date Mon Nov 17 12:41:00 CST 2008 Mon Nov 17 12:41:28 CST 2008 bash-3.2$ rrdtool create t2.rrd DS:val:GAUGE:300:0:200000 RRA:LAST:0.9:1:2000 bash-3.2$ date; for ((i=0; $i<10000; i++)); do rrdtool update t2.rrd N:$RANDOM; done; date Mon Nov 17 12:41:35 CST 2008 Mon Nov 17 12:42:03 CST 2008 bash-3.2$ date; for ((i=0; $i<10000; i++)); do rrdtool update t2.rrd N:$RANDOM; done; date Mon Nov 17 12:42:08 CST 2008 Mon Nov 17 12:42:37 CST 2008 Indeed, sqlite approach seems to be viable only when grouping together many updates into a singular transaction: 1 row update/transaction = ~9Hz 10 row updates/transaction = ~85Hz 100 row updates/transaction = ~800Hz Igor _______________________________________________ rrd-developers mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-developers
