Comment #8 on issue 25336 by brunob: Safe browsing updates should be throttled http://code.google.com/p/chromium/issues/detail?id=25336
2990 file operations per second for Chrome. A large number of them must have been cached but still it's an obscenely high number, hammered my disk and made the computer temporarily unusable. The pattern is very reliable though: All the file operations are a repeated batch of 6 file operations: 1 read and 5 writes. Here's a summarized set of 2 sets constituting 12 sequential operations: ReadFile C:\...\Safe Browsing Bloom SUCCESS Offset: 1,821,696, Length: 1,024 WriteFile C:\...\Safe Browsing Bloom-journal SUCCESS Offset: 9,158,056, Length: 4 WriteFile C:\...\Safe Browsing Bloom-journal SUCCESS Offset: 9,158,060, Length: 1,024 WriteFile C:\...\Safe Browsing Bloom-journal SUCCESS Offset: 9,159,084, Length: 4 WriteFile C:\...\Safe Browsing Bloom FAST IO DISALLOWED Offset: 9,947,136, Length: 1,024 WriteFile C:\...\Safe Browsing Bloom SUCCESS Offset: 9,947,136, Length: 1,024 ReadFile C:\...\Safe Browsing Bloom SUCCESS Offset: 4,664,320, Length: 1,024 WriteFile C:\...\Safe Browsing Bloom-journal SUCCESS Offset: 9,159,088, Length: 4 WriteFile C:\...\Safe Browsing Bloom-journal SUCCESS Offset: 9,159,092, Length: 1,024 WriteFile C:\...\Safe Browsing Bloom-journal SUCCESS Offset: 9,160,116, Length: 4 WriteFile C:\...\Safe Browsing Bloom FAST IO DISALLOWED Offset: 3,346,432, Length: 1,024 WriteFile C:\...\Safe Browsing Bloom SUCCESS Offset: 3,346,432, Length: 1,024 Also note that there of the write operations are entirely sequential - could that not be combined into single write? For example steps 2-4 and 8-10 from the above list: WriteFile Offset: 9,158,056, Length: 4 WriteFile Offset: 9,158,060, Length: 1,024 WriteFile Offset: 9,159,084, Length: 4 -- You received this message because you are listed in the owner or CC fields of this issue, or because you starred this issue. You may adjust your issue notification preferences at: http://code.google.com/hosting/settings --~--~---------~--~----~------------~-------~--~----~ Automated mail from issue updates at http://crbug.com/ Subscription options: http://groups.google.com/group/chromium-bugs -~----------~----~----~----~------~----~------~--~---
