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Zipherius Turas added a comment - 26/Jan/07 04:35 PM
The problem is that LLFastTimer uses RDTSC instead of platform dependent syscalls for high performance timing. RDTSC is dangerous to use because it is not guarenteed to be the same between processors, and because the number of cycles per second is a variable on modern processors due to the advent of Speedstep/etc. The workaround is to install the AMD dual core optimizer if you are running an AMD. If there isn't a patch up by the time I get the viewer compiling and my form sent in, I'll go ahead and work on this (for windows, as its not a cross platform fix).
I installed the AMD Dual Core optimizer and it did NOT stop this problem from happening. I have to either run imagecfg -u SecondLife.exe or manually set the affinity to one core.
Hmm, well I can't seem to replicate the problem on my system then with the dual core optimizer. This should still be the right problem though.
I have a dual core Opteron 165. The main viewer's framerate will be low for me as well, unless I set the process affinity to just one core. I think I can set the affinity even before I connect, and it will still be okay.
If I set it to both cores afterwards, it does not seem to raise the framerate any more. I have not had any framerate issues with the first look clients I've tried. (I haven't tried the "dual core optimizer" as it is not listed on the AMD Opteron page, and I have heard some have problems with it.) I believe this is fixed now.
What about Macs? How do us mac users with Intel Core 2 Duo's fix the problem?
I thought I had found a workaround for VWR-5574 by setting affinity to one core in the login-screen.
Alas, it's VWR-25, this bug is still alive. Frame-rate looks jerky, the statistics-window (ctrl-shift-1) shows a cloud of points around the normal frame-rate, and a very narrow band around 8 fps. ======= Second Life 1.22.6 (107493) Jan 9 2009 05:35:41 (Second Life Public Nightly) CPU: Intel Core 2 Series Processor (2401 MHz) libcurl Version: libcurl/7.16.4 OpenSSL/0.9.7c zlib/1.2.3 Having issues with this as well.
When running SL with Duo core, core1 will stay at 100% usage, while core 2 will hover around the 80% useage, then spikes to 100% useage before crash. Running with single core, still will run for a few minutes then SL client will crash when core hits 100%. ==================== Operating System: Windows Vista™ Home Premium (6.0, Build 6001) Service Pack 1 I am not that great with all the technical things, but I have tried everything that I can find.
I've installed the AMD Dual Core Optimizer, I have been changing the affinity before I log in (via the task manager), I created a .bat file as instructed. I tried to do the patch above manually through the description information but nothing seemed to happen. I click on the patch attachment and its just a webpage, I cant really do anything with that. Can anyone help me? Second Life shuts down automatically around every 2 minutes. Im on a dual core processor and have tried everything, all the pages that I have searched for the fixes, lead me to downloads, and I have done all of them. Thanks... Please see these articles in Knowledge Base How can I improve performance ?
 and How do I check for packet loss (network lag)? Please also see this article for suggestions for Turning off WindLight rendering
Is my firewall responsible for problems with Second Life? This article will show you how to get detailed information about the performance of your computer and the Second Life world Statistics Bar Guide If this is still an issue please Submit a Ticket with Support Thank you : ) |
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Bug
Reopened
Major
Process affinity problem causes severe frame rate drop on multi-core systems
