The Boston Diaries

The ongoing saga of a programmer who doesn't live in Boston, nor does he even like Boston, but yet named his weblog/journal “The Boston Diaries.”

Go figure.

Wednesday, October 03, 2007

Workaround for a Heisenbug

Okay, now I'm concerned. I'm now running the production greylist daemon on an actual server (not a virtual server) with the checkpointing feature enabled, and it's working. That can mean one of two things:

  1. There's a bug in the virtual server environment that my program tickles
  2. There's a bug lurking in my code that the virtual server environment tickles

Neither one is good, and it's bugging me that I don't know which is the case. But I managed to at least work around the problem in the meantime (now watch—the bug is in my code, but it's the virtual server environment that causes the bug to surface after a few hours instead of a week or so it might take on a physical server).

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