Hi, Is the 'zipf theta' the value of the exponent characterizing the zipf distribution? If so, why could not it be 1.0? With the following job file, fio sent out an error - fio: zipf theta must different than 1.0. [job] ioengine=null rw=randread norandommap size=1280m bs=4k random_distribution=zipf:1 I looked through the fio zipf library but was confused with zipf_next() function? Any illustration about this zipf distribution generator? Thanks Yufei -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html