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#1 2012-09-11 19:47:03

mihanson
Member
Registered: 2009-04-27
Posts: 10

Slow x264 Encodes Using HandBrake and 3.5 Series Kernel

I'm experiencing painfully slow x264 (h.264) encoding times using HandBrake and the stock Arch 3.5 series kernel (x86-64).  Encodes with HandBrake slow to 1-2 fps on the 2nd pass when using 3.5 series kernel.  When I roll back to a 3.4 series kernel, I get speeds in the 20-25 fps range.  This issue only seems to affect my i5-3450S (Ivy Bridge) with 8GB RAM.  I get the same encode speeds regardless of the kernel used on my i3-2105 (Sandy Bridge) with 8GB RAM, which is about 10-15 fps on the 2nd pass.  I could only find one other report on this in the Red Hat Bugzilla (which I replied to).  Has anyone else seen this and what can I do to help get this fixed?

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