Author: Tobias Weber <tobias_webe...@gmx.de>
Branch: c8-tcp-style-trx-length
Changeset: r2122:f6be3fc14929
Date: 2017-07-16 13:38 +0200
http://bitbucket.org/pypy/stmgc/changeset/f6be3fc14929/
Log: Introduce slow start mechanism
diff --git a/c8/stm/nursery.c b/c8/stm/nursery.c
--- a/c8/stm/nursery.c
+++ b/c8/stm/nursery.c
@@ -49,6 +49,10 @@
if (previous < 1) {
new = previous * multiplier;
}
+ if (tl->linear_transaction_length_increment != 0) {
+ // thread had to abort before: slow start
+ set_backoff(tl, new);
+ }
} else { // not abort and backoff != 0
// in backoff, linear increase up to 1
if (previous < 1) {
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