User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; rv:1.7.3) Gecko/20041001 Firefox/0.10.1 Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; rv:1.7.3) Gecko/20041001 Firefox/0.10.1 When activated the option smooth scrolling the temperature of the memory controller suddenly produces peaks, forcing the fan to power up to 100% for a few seconds, scrolling with this option checked forces the fan to work at 100% for the whole time of scrolling. Disabling this option makes the fan and the memory controller bahave as expected, with scrolling and without. Reproducible: Always Steps to Reproduce: 1. activate option 2. scroll through a website 3. listen to the fan or check temp/fan with hardwaremonitor Actual Results: It seems, that for whatever reason the memory controller is overloaded during the scrolling. Expected Results: The SW should use only as much load on the chip as is required so that the fan has not to power up to 100%. I could mention, that due to the high main processor capacity of 2*2.5GHz some timings inside the smooth scrolling code overload the memory controller resulting in the described behaviour.
Related to Bug 202718? Does this happen with every page like Bugzilla listings?
It could be, 202718 is Windows related, perhaps due to the dual processor system whith hich prozessor clock (2.5GHz) and due to the high bus-clock (1.25GHz) on the Mac G5 this leads to reported behaviour ? The CPU Load goes up, too - but the Memory Controller triggers the fan to speed up ... I don't know, how the timing is done within the smooth scrolling.
depend or dup bug236417?
This might be more info: when I enable smooth scrolling on my HP Omnibook 4150b the CPU runs at 100% more and sometimes the system locks up tight in mid-scroll -- you can acttually see where the replicated lines are when it locks up. When I disable smooth scrolling, my system is much more stable. ATI RAGE Mobility chipset. Vendor ID from XP Pro SP2 device manager: PCI\VEN_1002&DEV_4C4D&SUBSYS_000A103C&REV_64\4&415A68E&0&0008 Driver: 5.1.2001.0 Date: 6-Jun-2001 (Microsoft signed)
Most likely bug 141710, complicated with the extra cpu-power that you need to do smooth-scrolling.
Helmut Müller: Is this still an issue with a recent release ?
Status: UNCONFIRMED → RESOLVED
Last Resolved: 9 years ago
Resolution: --- → WORKSFORME
Sorry Matthias, I obviously missed the mail from january and did not check bugzilla frequently. Unfortunately I can not give it a try as I have changed my system, instead of the 2.5 PPC I now use a intel based mac mini. So I´m sorry... regards, Helmut
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