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![]() ![]() I wonder how we can get a definitive answer from Apple. ![]() ![]() When I do the same thing on the 10.6.2 system, toggling the hyper-threading status in the Processor pane (or from the command line) has no effect on Crafty whatsoever. When I run Crafty on the 10.5.8 system, toggling the hyper-threading status in the Processor pane has an immediate effect on Crafty's speed with 8 threads. Software Version: 4.7.0 File Size: 65. It is measurably slower when hyper-threading is enabled. When set to use 8 threads, Crafty is quite sensitive to hyper-threading status. On each system I have identically compiled versions of the chess program Crafty. PHASE 4.8.0 performance-addon-operator.v4.8.0 Installing 4.7.0 Replacing. I have both a 10.5.8 and a 10.6.2 system on my Mac Pro 4,1. Simply put, latency determines how fast data (packets) moves from the sender to. A check can be placed or removed, or cpu_ht can be set 1 or 0, but it seems to me hyper-threading is always enabled. I am now fairly certain that neither the Processor pref pane nor the command line method actually disable hyper-threading on 10.6 (using either 32 or 64-bit kernels). ![]()
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