[Spread-users] regular message rate pausing?

[Matt Hurd]

I'm just benchmarking and I'm noticing that every 10-30 seconds I'm
getting a pause in sending messages.  The normal rate of about 80 m/s
drops to 10 to 20 then catches up the next epoch.  Each epoch is about
a second.

Is this normal, or should I dig further?

matt.
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bench trace:

epoch message count = 84, epoch min = 0.000407, epoch max = 0.001349,
average delay = 0.000464548, rate = 83.0187
epoch message count = 83, epoch min = 0.000408, epoch max = 0.001718,
average delay = 0.000449928, rate = 82.9323
epoch message count = 84, epoch min = 0.000407, epoch max = 0.004359,
average delay = 0.000492381, rate = 83.184
epoch message count = 84, epoch min = 0.000408, epoch max = 0.001704,
average delay = 0.000456131, rate = 83.3471
epoch message count = 84, epoch min = 0.000408, epoch max = 0.001693,
average delay = 0.000451917, rate = 83.2691
epoch message count = 83, epoch min = 0.000406, epoch max = 0.001771,
average delay = 0.000472446, rate = 82.9327
epoch message count = 83, epoch min = 0.000401, epoch max = 0.000743,
average delay = 0.000447422, rate = 82.8503
epoch message count = 84, epoch min = 0.000406, epoch max = 0.000792,
average delay = 0.000437393, rate = 83.0178
epoch message count = 84, epoch min = 0.000408, epoch max = 0.125269,
average delay = 0.00914951, rate = 83.0787
epoch message count = 84, epoch min = 0.000406, epoch max = 0.000728,
average delay = 0.000436238, rate = 83.372
epoch message count = 84, epoch min = 0.00041, epoch max = 0.001765,
average delay = 0.000462512, rate = 83.2658
epoch message count = 83, epoch min = 0.000408, epoch max = 0.000747,
average delay = 0.000446145, rate = 82.9042
epoch message count = 83, epoch min = 0.000406, epoch max = 0.001681,
average delay = 0.000471964, rate = 82.962
epoch message count = 84, epoch min = 0.000406, epoch max = 0.004457,
average delay = 0.000493607, rate = 83.184
epoch message count = 84, epoch min = 0.000405, epoch max = 0.00074,
average delay = 0.000443833, rate = 83.2498
epoch message count = 81, epoch min = 0.000407, epoch max = 0.018464,
average delay = 0.00261994, rate = 80.1491
epoch message count = 84, epoch min = 0.000405, epoch max = 0.001689,
average delay = 0.000451083, rate = 83.1826
epoch message count = 81, epoch min = 0.0004, epoch max = 0.045356,
average delay = 0.00160312, rate = 80.2139
epoch message count = 84, epoch min = 0.000391, epoch max = 0.000736,
average delay = 0.000438857, rate = 83.348
epoch message count = 83, epoch min = 0.000403, epoch max = 0.007219,
average delay = 0.000533783, rate = 82.6042
epoch message count = 84, epoch min = 0.000409, epoch max = 0.008939,
average delay = 0.0005675, rate = 83.0063
epoch message count = 84, epoch min = 0.000409, epoch max = 0.000729,
average delay = 0.000434762, rate = 83.2788
epoch message count = 84, epoch min = 0.000409, epoch max = 0.000802,
average delay = 0.000438143, rate = 83.0198
epoch message count = 84, epoch min = 0.000409, epoch max = 0.005297,
average delay = 0.000514524, rate = 83.2664
epoch message count = 84, epoch min = 0.000396, epoch max = 0.001679,
average delay = 0.000462107, rate = 83.2463
epoch message count = 83, epoch min = 0.000408, epoch max = 0.007981,
average delay = 0.00053147, rate = 82.2107
epoch message count = 84, epoch min = 0.000408, epoch max = 0.003293,
average delay = 0.000478571, rate = 83.1867
epoch message count = 84, epoch min = 0.000408, epoch max = 0.001893,
average delay = 0.000453298, rate = 83.3487
epoch message count = 84, epoch min = 0.000407, epoch max = 0.000726,
average delay = 0.000434238, rate = 83.2663
epoch message count = 84, epoch min = 0.000408, epoch max = 0.001692,
average delay = 0.000460024, rate = 83.0189
epoch message count = 44, epoch min = 0.00041, epoch max = 1.99748,
average delay = 0.0458404, rate = 17.3917
epoch message count = 249, epoch min = 0.000407, epoch max = 1.98668,
average delay = 0.681046, rate = 247.579
epoch message count = 83, epoch min = 0.000404, epoch max = 0.000786,
average delay = 0.000437108, rate = 82.8507
epoch message count = 84, epoch min = 0.0004, epoch max = 0.000832,
average delay = 0.00044906, rate = 83.1252
epoch message count = 84, epoch min = 0.000404, epoch max = 0.002484,
average delay = 0.000472476, rate = 83.0167