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Date: Fri, 24 Apr 2009 00:27:01 -0400 (EDT) From: Steven Rostedt <rostedt@...dmis.org> To: Lai Jiangshan <laijs@...fujitsu.com> cc: Ingo Molnar <mingo@...e.hu>, Frederic Weisbecker <fweisbec@...il.com>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] ring_buffer: compressed event header On Fri, 24 Apr 2009, Lai Jiangshan wrote: > > > RB_MAX_SMALL_DATA = 28bytes is too small for most tracers, it wastes > an 'u32' to save the actually length for events which data size > 28. > > This fix uses compressed event header and enlarges RB_MAX_SMALL_DATA. > > Impact: saves about 0%-12.5%(depends on tracer) memory in ring_buffer > > Signed-off-by: Lai Jiangshan <laijs@...fujitsu.com> Thanks, applied! -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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