On Mon, Nov 9, 2009 at 6:28 AM, erik quanstrom <quans...@quanstro.net> wrote:
> with devtrace, the situation is the opposite. jitter is > important (to eliminate), 541 small fixed-sized events can > be returned per system call and there is one trace device > per system. Note that we can filter on up to 16 PIDs already. Also, you can grow the buffer space to 256 KB -- but yes, we could grow it further. I'd be glad to hear we don't need more complex kernel support for devtrace. User mode is my favorite place to filter. But, that said, putting in a simple min/max test for the params would be simple. Anyway, we'll work on seeing what we need. ron
