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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "content/browser/download/download_stats.h" | 5 #include "content/browser/download/download_stats.h" |
6 | 6 |
7 #include "base/metrics/histogram.h" | 7 #include "base/metrics/histogram.h" |
8 #include "base/metrics/sparse_histogram.h" | 8 #include "base/metrics/sparse_histogram.h" |
9 #include "base/strings/string_util.h" | 9 #include "base/strings/string_util.h" |
10 #include "content/browser/download/download_resource_handler.h" | 10 #include "content/browser/download/download_resource_handler.h" |
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325 int max = 1024 * 1024; // One Megabyte. | 325 int max = 1024 * 1024; // One Megabyte. |
326 UMA_HISTOGRAM_CUSTOM_COUNTS("Download.WriteSize", data_len, 1, max, 256); | 326 UMA_HISTOGRAM_CUSTOM_COUNTS("Download.WriteSize", data_len, 1, max, 256); |
327 } | 327 } |
328 | 328 |
329 void RecordDownloadWriteLoopCount(int count) { | 329 void RecordDownloadWriteLoopCount(int count) { |
330 UMA_HISTOGRAM_ENUMERATION("Download.WriteLoopCount", count, 20); | 330 UMA_HISTOGRAM_ENUMERATION("Download.WriteLoopCount", count, 20); |
331 } | 331 } |
332 | 332 |
333 void RecordAcceptsRanges(const std::string& accepts_ranges, | 333 void RecordAcceptsRanges(const std::string& accepts_ranges, |
334 int64 download_len, | 334 int64 download_len, |
335 const std::string& etag) { | 335 bool has_strong_validator) { |
336 int64 max = 1024 * 1024 * 1024; // One Terabyte. | 336 int64 max = 1024 * 1024 * 1024; // One Terabyte. |
337 download_len /= 1024; // In Kilobytes | 337 download_len /= 1024; // In Kilobytes |
338 static const int kBuckets = 50; | 338 static const int kBuckets = 50; |
339 | 339 |
340 if (LowerCaseEqualsASCII(accepts_ranges, "none")) { | 340 if (LowerCaseEqualsASCII(accepts_ranges, "none")) { |
341 UMA_HISTOGRAM_CUSTOM_COUNTS("Download.AcceptRangesNone.KBytes", | 341 UMA_HISTOGRAM_CUSTOM_COUNTS("Download.AcceptRangesNone.KBytes", |
342 download_len, | 342 download_len, |
343 1, | 343 1, |
344 max, | 344 max, |
345 kBuckets); | 345 kBuckets); |
346 } else if (LowerCaseEqualsASCII(accepts_ranges, "bytes")) { | 346 } else if (LowerCaseEqualsASCII(accepts_ranges, "bytes")) { |
347 UMA_HISTOGRAM_CUSTOM_COUNTS("Download.AcceptRangesBytes.KBytes", | 347 UMA_HISTOGRAM_CUSTOM_COUNTS("Download.AcceptRangesBytes.KBytes", |
348 download_len, | 348 download_len, |
349 1, | 349 1, |
350 max, | 350 max, |
351 kBuckets); | 351 kBuckets); |
352 // ETags that start with "W/" are considered weak ETags which don't imply | 352 if (has_strong_validator) |
353 // byte-wise equality. | 353 RecordDownloadCount(STRONG_VALIDATOR_AND_ACCEPTS_RANGES); |
354 if (!StartsWithASCII(etag, "w/", false)) | |
355 RecordDownloadCount(STRONG_ETAG_AND_ACCEPTS_RANGES); | |
356 } else { | 354 } else { |
357 UMA_HISTOGRAM_CUSTOM_COUNTS("Download.AcceptRangesMissingOrInvalid.KBytes", | 355 UMA_HISTOGRAM_CUSTOM_COUNTS("Download.AcceptRangesMissingOrInvalid.KBytes", |
358 download_len, | 356 download_len, |
359 1, | 357 1, |
360 max, | 358 max, |
361 kBuckets); | 359 kBuckets); |
362 } | 360 } |
363 } | 361 } |
364 | 362 |
365 namespace { | 363 namespace { |
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607 disk_write_time_ms * 100 / elapsed_time_ms); | 605 disk_write_time_ms * 100 / elapsed_time_ms); |
608 } | 606 } |
609 | 607 |
610 void RecordSavePackageEvent(SavePackageEvent event) { | 608 void RecordSavePackageEvent(SavePackageEvent event) { |
611 UMA_HISTOGRAM_ENUMERATION("Download.SavePackage", | 609 UMA_HISTOGRAM_ENUMERATION("Download.SavePackage", |
612 event, | 610 event, |
613 SAVE_PACKAGE_LAST_ENTRY); | 611 SAVE_PACKAGE_LAST_ENTRY); |
614 } | 612 } |
615 | 613 |
616 } // namespace content | 614 } // namespace content |
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