Author: Tobias Weber <[email protected]>
Branch: c8-adaptive-trx-length-prolonged-backoff
Changeset: r2055:707bc6a2c0a8
Date: 2017-05-04 12:39 +0200
http://bitbucket.org/pypy/stmgc/changeset/707bc6a2c0a8/
Log: Backed out changeset 6b4b7aedc3d1
diff --git a/c8/stm/nursery.c b/c8/stm/nursery.c
--- a/c8/stm/nursery.c
+++ b/c8/stm/nursery.c
@@ -44,9 +44,17 @@
float new = previous;
if (aborts) {
reset_or_decrease_backoff(true); // reset backoff
- new = 0;
+ if (previous > 0.000001) {
+ new = previous / 2;
+ } else if (previous > 0) {
+ new = 0;
+ }
} else if (stm_increase_transaction_length_backoff == 0) {
- new = 1;
+ if (previous - 0.0000001 < 0) {
+ new = 0.000001;
+ } else if (previous < 1) {
+ new = previous * 2;
+ }
} else { // not abort and backoff != 0
reset_or_decrease_backoff(false); // decrease backoff by one
}
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