Poll stats more often to get more stable stats in ramp-up tests.

webrtc/video/rampup_tests.cc

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 11 matching lines @@
 #include "webrtc/modules/rtp_rtcp/interface/rtp_rtcp.h"
 #include "webrtc/modules/rtp_rtcp/source/rtcp_utility.h"
 #include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
 #include "webrtc/system_wrappers/interface/thread_wrapper.h"
 #include "webrtc/test/testsupport/perf_test.h"
 #include "webrtc/video/rampup_tests.h"
 
 namespace webrtc {
 namespace {
 
-static const int64_t kPollIntervalMs = 250;
+static const int64_t kPollIntervalMs = 20;
 
 std::vector<uint32_t> GenerateSsrcs(size_t num_streams,
                                     uint32_t ssrc_offset) {
   std::vector<uint32_t> ssrcs;
   for (size_t i = 0; i != num_streams; ++i)
     ssrcs.push_back(static_cast<uint32_t>(ssrc_offset + i));
   return ssrcs;
 }
 }  // namespace
 
@@ skipping 448 matching lines @@
   RampUpTester test(3, 0, RtpExtension::kTransportSequenceNumber, true, true);
   RunBaseTest(&test);
 }
 
 TEST_F(RampUpTest, TransportSequenceNumberSingleStreamWithHighStartBitrate) {
   RampUpTester test(1, 0.9 * kSingleStreamTargetBps,
                     RtpExtension::kTransportSequenceNumber, false, false);
   RunBaseTest(&test);
 }
 }  // namespace webrtc