Reduce LOOP_NOPEN and LOOP_USERDAT from 500 to 100
With the incremental backoffs, these were super long waits for locks. Not sure about my math there, but at 500, the total timeout was not "about 45 seconds" but rather several minutes. At 100, the total max retry time should be almost exactly 45 seconds: Retries ms-per total seconds 0 - 9 0 0 10 - 19 100 1 20 - 29 200 3 30 - 39 300 6 40 - 49 400 10 50 - 59 500 15 60 - 69 600 21 70 - 79 700 28 80 - 89 800 36 90 - 99 900 45* 100 - 109 1000 55 110 - 119 1100 66 120 - 129 1200 78 130 - 139 1300 91 140 - 149 1400 105 150 - 159 1500 120 160 - 169 1600 136 170 - 179 1700 153 180 - 189 1800 171 190 - 200 1900 200! ... so yeah, 500 was way too big a number.
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