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authorSergey Sharybin <sergey@blender.org>2020-12-01 16:52:08 +0300
committerSergey Sharybin <sergey@blender.org>2020-12-01 16:55:22 +0300
commit4c92fb671539bc936fab9177822c889ab372434d (patch)
tree16e41dccba0844c2108f8ffe9eef8af10aee0d4a /intern/libmv
parentc21265b29ed98ad504ffccbf2f1f0b4b7a07f769 (diff)
Libmv: Tweak default logging verbosity level
Log to verbosity level 1 rather than INFO severity. Avoids a lot of overhead coming from construction of the INFO stream and improves performance and threadability of code which uses logging. This makes tracking of 250 frames of a track of default settings to drop down from 0.6sec to 0.4sec.
Diffstat (limited to 'intern/libmv')
-rw-r--r--intern/libmv/libmv/logging/logging.h16
1 files changed, 15 insertions, 1 deletions
diff --git a/intern/libmv/libmv/logging/logging.h b/intern/libmv/libmv/logging/logging.h
index ce7f3201516..0f4f99e3895 100644
--- a/intern/libmv/libmv/logging/logging.h
+++ b/intern/libmv/libmv/logging/logging.h
@@ -23,6 +23,20 @@
#include <glog/logging.h>
-#define LG LOG(INFO)
+// Note on logging severity and verbosity level.
+//
+// Reserve LOG(INFO) for messages which are always to be put to log and don't
+// use the INFO severity for the debugging/troubleshooting type of messages.
+// Some reasoning behind:
+//
+// - Library integration would want to disable "noisy" messages coming from
+// algorithms.
+//
+// - It is not possible to disable INFO severity entirely: there is enough
+// of preparation being done for the message stream. What is even worse
+// is that such stream preparation causes measurable time spent in spin
+// lock, ruining multi-threading.
+
+#define LG VLOG(1)
#endif // LIBMV_LOGGING_LOGGING_H