(2014/02/28 6:45), Andi Kleen wrote: > Masami Hiramatsu <masami.hiramatsu...@hitachi.com> writes: > >> Currently, since the kprobes expects to be used >> with less than 100 probe points, its hash table >> just has 64 entries. This is too little to handle >> several thousands of probes. >> Enlarge this to 4096 entires which just consumes >> 32KB (on 64bit arch) for better scalability. > > 32K for a debug feature that most systems never use seems > too large to me. > > First can you check if smaller hash tables work too > (perhaps with a better hash, like jhash)
I doubt jhash helps it, but yes, at least the various size should be tested. > And then if you enlarge the table please allocate > it dynamically on the first use. OK, I'll try to do so. Thank you, -- Masami HIRAMATSU IT Management Research Dept. Linux Technology Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: masami.hiramatsu...@hitachi.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
