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| author | dominich@google.com <dominich@google.com@0039d316-1c4b-4281-b951-d872f2087c98> | 2011-03-22 19:50:33 +0000 |
|---|---|---|
| committer | dominich@google.com <dominich@google.com@0039d316-1c4b-4281-b951-d872f2087c98> | 2011-03-22 19:50:33 +0000 |
| commit | 8084b1fe055d3fd056308bb88b8a0f326498b197 (patch) | |
| tree | f1b9fdf0f1bbb9f9c4e9b7dc26bc0ea1b718396c | |
| parent | 93389a1ddac1ff5d3cb885eb2ab2a914b4fbe019 (diff) | |
| download | chromium_src-8084b1fe055d3fd056308bb88b8a0f326498b197.zip chromium_src-8084b1fe055d3fd056308bb88b8a0f326498b197.tar.gz chromium_src-8084b1fe055d3fd056308bb88b8a0f326498b197.tar.bz2 | |
Adding prerenders per session counter
BUG=
TEST=Start a session with prerender enabled and check the histograms to see the count increasing with every successful prerender.
Review URL: http://codereview.chromium.org/6697037
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@79022 0039d316-1c4b-4281-b951-d872f2087c98
| -rw-r--r-- | chrome/browser/prerender/prerender_manager.cc | 6 | ||||
| -rw-r--r-- | chrome/browser/prerender/prerender_manager.h | 4 |
2 files changed, 10 insertions, 0 deletions
diff --git a/chrome/browser/prerender/prerender_manager.cc b/chrome/browser/prerender/prerender_manager.cc index d571213..d287698 100644 --- a/chrome/browser/prerender/prerender_manager.cc +++ b/chrome/browser/prerender/prerender_manager.cc @@ -22,6 +22,9 @@ namespace prerender { // static +int PrerenderManager::prerenders_per_session_count_ = 0; + +// static base::TimeTicks PrerenderManager::last_prefetch_seen_time_; // static @@ -177,6 +180,9 @@ bool PrerenderManager::MaybeUsePreloadedPage(TabContents* tc, const GURL& url) { if (!pc->load_start_time().is_null()) RecordTimeUntilUsed(GetCurrentTimeTicks() - pc->load_start_time()); + + UMA_HISTOGRAM_COUNTS("Prerender.PrerendersPerSessionCount", + ++prerenders_per_session_count_); pc->set_final_status(FINAL_STATUS_USED); RenderViewHost* rvh = pc->render_view_host(); diff --git a/chrome/browser/prerender/prerender_manager.h b/chrome/browser/prerender/prerender_manager.h index 4d15e38..f50951b 100644 --- a/chrome/browser/prerender/prerender_manager.h +++ b/chrome/browser/prerender/prerender_manager.h @@ -185,6 +185,10 @@ class PrerenderManager : public base::RefCounted<PrerenderManager> { // This static variable should only be modified on the UI thread. static base::TimeTicks last_prefetch_seen_time_; + // A count of how many prerenders we do per session. Initialized to 0 then + // incremented and emitted to a histogram on each successful prerender. + static int prerenders_per_session_count_; + // RepeatingTimer to perform periodic cleanups of pending prerendered // pages. base::RepeatingTimer<PrerenderManager> repeating_timer_; |