We continue to hit the maximum number of builders per slave, particularly on the Linu xtest machines. We need to up the MAX_BROKER_REFS so this stops breaking things. The tegras already use it, like this: import twisted.spread.pb twisted.spread.pb.MAX_BROKER_REFS = 2048 in the .tac files. We need to test it to make sure it doesn't anything.

If we take the effort to bump this, we may want to choose something like 4096 or some other largish number that we don't foresee hitting for a long long time.

(In reply to Aki Sasaki [:aki] from comment #1) > If we take the effort to bump this, we may want to choose something like > 4096 or some other largish number that we don't foresee hitting for a long > long time. Is increasing the refs that high going to have other adverse affects?

The increase itself will not, but I don't know about the effects of using that many refs. Most likely you will see further inordinate memory use and slowness. I don't know if the underlying algorithms are O(N) (in which case quadrupling will only make things four times slower/bigger) or O(N^2) (which would make it sixteen times slower/bigger) or what.