On platforms GTK and EFL, revision r171957 <http://trac.webkit.org/r171957> has caused failures on the performance tests Canvas/terrain.html and Speedometer/Full.html. $ Tools/Scripts/run-perf-tests --platform gtk --release -2 Canvas/terrain.html Speedometer/Full.html Running 2 tests Running Canvas/terrain.html (1 of 2) error: Canvas/terrain.html BitmapImage 0x7fa7737c14e0 frameAtIndex recaching, m_decodedSize now 3145728 (size change 0) BitmapImage 0x7fa7737c14e0 frameAtIndex recaching, m_decodedSize now 3145728 (size change 0) BitmapImage 0x7fa7737c14e0 frameAtIndex recaching, m_decodedSize now 3145728 (size change 0) BitmapImage 0x7fa7737c14e0 frameAtIndex recaching, m_decodedSize now 3145728 (size change 0) FAILED Finished: 60.283837 s Running Speedometer/Full.html (2 of 2) error: Speedometer/Full.html BitmapImage 0x7f219f50d820 frameAtIndex recaching, m_decodedSize now 516096 (size change 0) BitmapImage 0x7f219f50d820 frameAtIndex recaching, m_decodedSize now 516096 (size change 0) BitmapImage 0x7f219f50d820 frameAtIndex recaching, m_decodedSize now 516096 (size change 0) BitmapImage 0x7f219f50d820 frameAtIndex recaching, m_decodedSize now 516096 (size change 0) BitmapImage 0x7f219f50d820 frameAtIndex recaching, m_decodedSize now 516096 (size change 0) BitmapImage 0x7f219f50d820 frameAtIndex recaching, m_decodedSize now 516096 (size change 0) BitmapImage 0x7f219f50d820 frameAtIndex recaching, m_decodedSize now 516096 (size change 0) BitmapImage 0x7f219f50d820 frameAtIndex recaching, m_decodedSize now 516096 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f219f4ec1a0 frameAtIndex recaching, m_decodedSize now 60 (size change 0) [.... skipped to avoid flooding, it continues with lots of this kind of errors ....] BitmapImage 0x7f21a40bcc30 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) BitmapImage 0x7f21a40bcc30 frameAtIndex recaching, m_decodedSize now 200704 (size change 0) FAILED Finished: 74.578539 s Full log for the GTK perf bot: http://build.webkit.org/builders/GTK%20Linux%2064-bit%20Release%20%28Perf%29/builds/463/steps/perf-test/logs/stdio Full log for the EFL perf bot: http://build.webkit.org/builders/EFL%20Linux%2064-bit%20Release%20WK2%20%28Perf%29/builds/2792/steps/perf-test/logs/stdio This revision has also caused lot of regressions on the layout tests for GTK (reported on bug 135532). It has probably also caused regressions for EFL (didn't checked) I have double checked this: reverting r171957 fixes this failures
I rolled out r171957.