Mozilla/5.0 (X11; Linux x86_64; rv:2.0b11pre) Gecko/20110127 Firefox/4.0b11pre OS: Ubuntu 10.10 x86_64 (w/ compiz enabled, as it is by default) Graphics card: GeForce 9800 GT NVIDIA proprietary driver version (from nvidia-settings): 260.19.06
Summary: scrolling content with a plugins is slow (on Ubuntu w/ NVIDIA & layers acceleration force-enabled) → scrolling content with a plugin is slow (on Ubuntu w/ NVIDIA & layers acceleration force-enabled)
FWIW: on my laptop (with a setup as described in comment 3 except that the card is an NVIDIA NVS 3100M), I immediately hit the crash from bug 629265 upon loading the testcase. No crash on my desktop, though - just slooow scrolling.
On my mac mini running OS X 10.6 (with layers accel defaulted to being on in nightlies), there doesn't seem to be a significant difference for this bug's testcase, for layers acceleration being enabled vs. disabled -- both seem to yield results ranging between 1600ms-2800ms. So this bug's testcase appears to hit a Linux-specific issue.
For me it is the same. But when I opened Bug 655017 it was ~4x faster.
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