FT> Have you tried SCHED_FIFO? Not yet, but that is a good suggestion. FT> By the way, can you upload or post the latest kernel and FT> user-space code? Right now I am working on a version that still uses read()/write(), but that does not use a remap cache (in a way very similar to what you posted). When I get it close to stable, I'll post it here for comments. After reviewing the ringbuffer code more, I'm not sure that it really buys you any additional performance (other than 1/3 less syscalls). The amount of memory that is copied around seems to be about the same. Either way, I'll revisit this after I get my current version stable again. -- Dan Smith IBM Linux Technology Center Open Hypervisor Team email: danms@xxxxxxxxxx
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