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[Discuss-gnuradio] Performance problem with memmove

From: Felix Wunsch
Subject: [Discuss-gnuradio] Performance problem with memmove
Date: Mon, 03 Sep 2012 11:03:10 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120827 Thunderbird/15.0

Hi all,

while I was profiling and optimizing my DRM transmitter flow graph, I noticed that __memmove_sse3_back.S is the dominating part in my program, although I do not explicitly call memmove() once in my own code. I am using a vector based approach which leads to quite large buffers (and lots of gr-buffer warnings).

Does memmove get called in the buffer context and is it possible that this in combination with large buffers leads to a high CPU load?

Best regards,
Felix Wunsch

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