diff options
| author | Alon Levy <alevy@redhat.com> | 2011-04-27 18:44:29 +0300 |
|---|---|---|
| committer | Alon Levy <alevy@redhat.com> | 2011-07-23 00:55:03 +0300 |
| commit | c4aff2b753e80e49f88e95ea02d1ff1de21a2391 (patch) | |
| tree | 4aaf57dec813083b0703f4a0a88d37704becdaef | |
| parent | ee0e638e119d54fb3f9eda6de18f8fb3884d8509 (diff) | |
xspice/qxl_ring: yield when ring is full
| -rw-r--r-- | src/qxl_ring.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/qxl_ring.c b/src/qxl_ring.c index 0870ef1..02c4c35 100644 --- a/src/qxl_ring.c +++ b/src/qxl_ring.c @@ -75,7 +75,11 @@ qxl_ring_push (struct qxl_ring *ring, while (header->prod - header->cons == header->num_items) { header->notify_on_cons = header->cons + 1; - +#ifdef XSPICE + /* in gtkperf, circles, this is a major bottleneck. Can't be that good in a vm either + * Adding the yield reduces cpu usage, but doesn't improve throughput. */ + pthread_yield(); +#endif mem_barrier(); } |