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On 5/7/06, Rohit Sharma <bhavhit@××××××××××.uk> wrote: |
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> marcin wrote: |
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> |
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> > Hi |
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> > |
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> > I've been comparing lately performance OpenGL apps against different |
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> > kernels 2.6.x and 2.4. Overall performance is comparable but a scheduler |
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> > of kernel 2.6 is very annoying (to say at least). |
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> |
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> I have not tried it myself, but there is an option in kernel config |
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> which facilitates the role of "Low latency desktop" in the 2.6 kernels. |
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> A parameter can be set to 1000 [default] and can be lowered to 250 [for |
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> low lat desk..]. It may help. Plus if you chose deadline scheduler as |
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> standard, it may help. |
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> |
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If by "Low latency desktop" you mean "Preemptible Kernel |
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(Low-Latency Desktop)" then i have tried this and it doesn't help. |
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I set the kernel timer frequency to 100 Hz. |
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The funny thing is that if I have tired |
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$ strace glxgears |
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then fps have increased to 100. |
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It seems that this is a problem with scheduler interactivity. |
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I would be a nice feature if I could simply turn it off. |
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Regards, |
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Marcin |
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-- |
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