Cheng Hu wrote: > Problem 4 > ========= > I was wondering if there is a way to specify to fetch to print out only > those records that contain some non-NAN value.
No, not that I know of. Of course you can filter, using grep. > Problem 5 > ========= > I was wondering if there is a way to turn off what rrdtool writes to > stdout while in remote control mode. Again: filter. > Problem 6 > ========= > I am using the following create command: > > fprintf(rrdtool_stdin, > "create tcp_test_data_%lu.rrd" \ > " --start %d" \ > " --step 1000" \ > " DS:congestion_window:GAUGE:%lu:0:U" \ > " DS:receive_ack:GAUGE:%lu:0:U" \ > " RRA:MAX:0.99:1:%u" \ > " RRA:AVERAGE:0.99:1:%u" \ > "\n", > cd->id, UTC_1980, ULONG_MAX, ULONG_MAX, > TEST_DURATION * 1000, TEST_DURATION * 1000); > > I was wondering since heartbeat is here set to ULONG_MAX (maximum possible > value for unsigned long), shouldn't RRDTool attempt to extrapolate all NAN > points when it fits the input data into Primary Data Points? I think it should. Are you sure you understand when RRDtool generates the PDPs ? If you are, try a number slightly lower than half of ULONG_MAX and see if that works. If it does, there's a sign bug somewhere (could be in your program or in RRDtool). Thinking of signs, you are telling RRDtool to write NaN into the database when it receives a negative number ... > This is what I'd like it to do. When it fits actual inputed data to PDPs, > if for a particular step it is missing data, I'd like it to extrapolate > the point by simply making the value equal the last non-NAN value. Is Uh, no. When you update the database, the rate calculated is valid from the previous update upto the current one. NaN is also a rate (not really, but for this explanation it is). Fact is, NaN should not occur unless you expect it to happen. HTH -- __________________________________________________________________ / [EMAIL PROTECTED] [EMAIL PROTECTED] \ | work private | | My employer is capable of speaking therefore I speak only for myself | +----------------------------------------------------------------------+ | Technical questions sent directly to me will be nuked. Use the list. | +----------------------------------------------------------------------+ | http://faq.mrtg.org/ | | http://rrdtool.eu.org --> tutorial | +----------------------------------------------------------------------+ -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
