conf: set core.lb.weighted_random_attempts to 8 by default

Setting this to 8 is harmless, and provides better balancing on servers with many rawx services.
open-io · May 3, 2021 · 63355fb · 63355fb
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commit 63355fb
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diff --git a/Variables.md b/Variables.md
@@ -186,7 +186,7 @@ Used by `gcc`
 
 > How many times shall we try to select a service using a weighted random algorithm, before switching to the shuffled selection. Increase this if you observe too many choices of low-score services while high-score services are available.
 
- * default: **1**
+ * default: **8**
  * type: guint
  * cmake directive: *OIO_CORE_LB_WEIGHTED_RANDOM_ATTEMPTS*
  * range: 1 -> 64000

diff --git a/conf.json b/conf.json
@@ -1114,7 +1114,7 @@
 			{ "type": "uint", "name": "oio_lb_weighted_random_attempts",
 				"key": "core.lb.weighted_random_attempts",
 				"descr": "How many times shall we try to select a service using a weighted random algorithm, before switching to the shuffled selection. Increase this if you observe too many choices of low-score services while high-score services are available.",
-				"def": "1", "min": 1, "max": "64k"},
+				"def": "8", "min": 1, "max": "64k"},
 			{ "type": "monotonic", "name": "oio_lb_writer_lock_alert_delay",
 				"key": "core.lb.writer_lock_alert_delay",
 				"descr": "Dump the time spent while holding the global writer lock, when the lock is held for longer than this threshold (in microseconds).",