On Thu, Mar 31, 2011 at 11:18 AM, Neil Mckee <[email protected]> wrote:
> (2). The impossible-counter-delta sanity checks in hsflowd depend on whether > the field is 32-bit or 64-bit. The upper limit for a 32-bit counter delta > is 0x7FFFFFFF (about 2e9) and for a 64-bit counter it is 1e13. These checks > are applied to the frames and bytes counters, but if either check fails then > the sequence number is reset for the whole counter-block -- which invalidates > all the counter-deltas for that polling-interval. In other words, if the > bytes_in counter jumps crazily then we won't believe the frames, errors or > drops counters either. > > looking at libmetrics/linux/metrics.c, it does seem that compiling with > -DREMOVE_BOGUS_SPIKES will do more or less the same as (2). I wonder if it's possible to implement this sanity check as a gmetad-python plugin. This way, the user can enable/disable this feature on-demand without having to re-compile code. Thoughts? Cheers, Bernard ------------------------------------------------------------------------------ Create and publish websites with WebMatrix Use the most popular FREE web apps or write code yourself; WebMatrix provides all the features you need to develop and publish your website. http://p.sf.net/sfu/ms-webmatrix-sf _______________________________________________ Ganglia-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ganglia-general
