nanog mailing list archives
Re: PSINet/Cogent Latency
From: Richard A Steenbergen <ras () e-gerbil net>
Date: Tue, 23 Jul 2002 11:02:47 -0400
On Tue, Jul 23, 2002 at 09:53:41AM -0400, Matt Zimmerman wrote:
There is a C library, librrd. That is how the other language APIs are built. As to efficiency, there is a lot of stringification, which is inconvenient and unnatural in C, but this should not be the bottleneck in the collection operation.
Yeah that thing, but I don't consider "rrdtool(argc, argv);" to be an actual lib interface. :) Where the bottleneck happens is dependant on a lot of things. I've seen libsnmp using code (which is vile at best) put out more than enough queries, so it can be done. After that, your bottleneck probably would be all the string parsing and file opening for every transaction in RRD. For a laugh, consider the fact that mrtg used to PREPEND data to its .log files on every poll. :) -- Richard A Steenbergen <ras () e-gerbil net> http://www.e-gerbil.net/ras PGP Key ID: 0x138EA177 (67 29 D7 BC E8 18 3E DA B2 46 B3 D8 14 36 FE B6)
Current thread:
- RE: PSINet/Cogent Latency, (continued)
- RE: PSINet/Cogent Latency Phil Rosenthal (Jul 22)
- Re: PSINet/Cogent Latency Richard A Steenbergen (Jul 22)
- RE: PSINet/Cogent Latency Phil Rosenthal (Jul 22)
- Re: PSINet/Cogent Latency Alexander Koch (Jul 22)
- Re: PSINet/Cogent Latency Gary E. Miller (Jul 22)
- Re: PSINet/Cogent Latency Richard A Steenbergen (Jul 22)
- Re: PSINet/Cogent Latency Vadim Antonov (Jul 23)
- Re: PSINet/Cogent Latency Matthew S. Hallacy (Jul 23)
- Re: PSINet/Cogent Latency Richard A Steenbergen (Jul 22)
- Re: PSINet/Cogent Latency Matt Zimmerman (Jul 23)
- Re: PSINet/Cogent Latency Richard A Steenbergen (Jul 23)
- RE: PSINet/Cogent Latency Alex Rubenstein (Jul 23)
- Re: PSINet/Cogent Latency Doug Clements (Jul 22)
- RE: PSINet/Cogent Latency Phil Rosenthal (Jul 22)
- Re: PSINet/Cogent Latency Matt Zimmerman (Jul 23)
- RE: PSINet/Cogent Latency Alex Rubenstein (Jul 22)
- Re: PSINet/Cogent Latency Streiner, Justin (Jul 23)
- Re: PSINet/Cogent Latency Scott Granados (Jul 23)