[Catching up on back mail while in transit to Hiroshima...] At Tue, 27 Oct 2009 16:28:57 -0400, Matt Lepinski wrote: > > Here, I understand that "everyone hitting the repository system at once" > is a bad outcome regardless of the frequency that we recommend. That is, > regardless of whether we recommend "once per day", "once per month", or > "eight times daily" we will likely see problems with too much server > load at midnight. If anyone can recommend text to avoid this phenomena > (i.e., to encourage people to spread out their queries to the repository > system), please send text.
FWIW: rcynic has a "jitter" mechanism which delays startup (and thus the rsync hit on servers) by a pseudo-random amount of time in the range [0..n], where n defaults to ten minutes. The important part is that this behavior is on by default, so a user has to read the documentation (or at least the usage message) to disable it. How much it helps, and whether a different value of n would be better, I dunno, but it was trivial to implement, and one could easily extend it slightly to log dire warnings or flat out refuse to run for too-small values of n. _______________________________________________ sidr mailing list sidr@ietf.org https://www.ietf.org/mailman/listinfo/sidr
