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| author | jar@chromium.org <jar@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2010-10-20 23:58:17 +0000 |
|---|---|---|
| committer | jar@chromium.org <jar@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2010-10-20 23:58:17 +0000 |
| commit | ecd95aec6e98dc442b52fbd3edd321efd738445f (patch) | |
| tree | 51f8f0c21b4b13ba53fb9d9c3146f7e0da3e41d9 /net/base | |
| parent | aacbaac07bef57ef5ae79c2bb73cc493697523a3 (diff) | |
| download | chromium_src-ecd95aec6e98dc442b52fbd3edd321efd738445f.zip chromium_src-ecd95aec6e98dc442b52fbd3edd321efd738445f.tar.gz chromium_src-ecd95aec6e98dc442b52fbd3edd321efd738445f.tar.bz2 | |
A/B test of parelellism limits on DNS resolutions
Current default is a max of 50 parallel resolutions.
This test tries to set limits at 6, 8, 10, 14, and 20.
Stats gathered include the number of successful
resolutions, and well as the number of failed
resolutions. We're looking to see if the ratio
changes as a function of the parallelism limit.
BUG=3041
r=eroman
Review URL: http://codereview.chromium.org/4010002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@63297 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'net/base')
| -rw-r--r-- | net/base/host_resolver_impl.cc | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/net/base/host_resolver_impl.cc b/net/base/host_resolver_impl.cc index 1d5377a..4dd8f5b 100644 --- a/net/base/host_resolver_impl.cc +++ b/net/base/host_resolver_impl.cc @@ -558,10 +558,10 @@ class HostResolverImpl::Job UMA_HISTOGRAM_ENUMERATION("DNS.ResolveCategory", category, RESOLVE_MAX); - static bool show_experiment_histograms = + static bool show_speculative_experiment_histograms = base::FieldTrialList::Find("DnsImpact") && !base::FieldTrialList::Find("DnsImpact")->group_name().empty(); - if (show_experiment_histograms) { + if (show_speculative_experiment_histograms) { UMA_HISTOGRAM_ENUMERATION( base::FieldTrial::MakeName("DNS.ResolveCategory", "DnsImpact"), category, RESOLVE_MAX); @@ -570,6 +570,18 @@ class HostResolverImpl::Job "DnsImpact"), duration); } } + static bool show_parallelism_experiment_histograms = + base::FieldTrialList::Find("DnsParallelism") && + !base::FieldTrialList::Find("DnsParallelism")->group_name().empty(); + if (show_parallelism_experiment_histograms) { + UMA_HISTOGRAM_ENUMERATION( + base::FieldTrial::MakeName("DNS.ResolveCategory", "DnsParallelism"), + category, RESOLVE_MAX); + if (RESOLVE_SUCCESS == category) { + DNS_HISTOGRAM(base::FieldTrial::MakeName("DNS.ResolveSuccess", + "DnsParallelism"), duration); + } + } } |