Performance improvements: rather than calling content_clean() every poll, we now call it no more frequently than once every 5 seconds. Additionally, we cache the result of talloc_total_size() in content_clean() rather than calculating it twice. On large documents, this function took 25% of CPU time. This makes the fetching/rendering/scrolling/redrawing of large documents over twice as fast.

svn path=/trunk/netsurf/; revision=4527

1 files changed, 3 insertions, 2 deletions

diff --git a/content/content.c b/content/content.c
index e4431453a..63b7f7b26 100644
--- a/content/content.c
+++ b/content/content.c
@@ -873,14 +873,15 @@ void content_clean(void)
 	next = 0;
 	for (c = content_list; c; c = c->next) {
 		next = c;
-		size += c->size + talloc_total_size(c);
+		c->talloc_size = talloc_total_size(c);
+		size += c->size + c->talloc_size;
 	}
 	for (c = next; c && (unsigned int) option_memory_cache_size < size;
 			c = prev) {
 		prev = c->prev;
 		if (c->user_list->next)
 			continue;
-		size -= c->size + talloc_total_size(c);
+		size -= c->size + c->talloc_size;
 		content_destroy(c);
 	}
 }