Changeset: 5d4186798f63 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/5d4186798f63
Modified Files:
monetdb5/mal/mal_dataflow.c
Branch: default
Log Message:
Partly revert. towards largest footprint.
diffs (27 lines):
diff --git a/monetdb5/mal/mal_dataflow.c b/monetdb5/mal/mal_dataflow.c
--- a/monetdb5/mal/mal_dataflow.c
+++ b/monetdb5/mal/mal_dataflow.c
@@ -399,13 +399,20 @@ DFLOWworker(void *T)
#ifdef HOTPOTATOE
/* HOT potatoe choice */
int last = 0, nxt = -1;
+ lng nxtclaim = -1;
MT_lock_set(&flow->flowlock);
for (last = fe->pc - flow->start; last >= 0 && (i = flow->nodes[last])
> 0; last = flow->edges[last]){
if (flow->status[i].state == DFLOWpending &&
flow->status[i].blocks == 1) {
- /* just pick the oldest available */
- nxt = i;
- break;
+ /* find the one with the largest footprint */
+ if( nxt == -1){
+ nxt = i;
+ nxtclaim = flow->status[i].argclaim;
+ }
+ if( flow->status[i].argclaim > nxtclaim){
+ nxt = i;
+ nxtclaim = flow->status[i].argclaim;
+ }
}
}
/* hot potatoe can not be removed, use alternative to proceed */
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