Hi, I ran a blktrace with -a read mask and when i parsed it to txt file,Along with Reads (R) I also see lots of Ns in the RWBS field. What does this mean and how do I filter only the reads or writes in this case? The Blktrace and Blkparse statements I used are blktrace -w 130 -d /dev/sdb -a read -b 4096 -o 4K_RR_Trace blkparse blkparse -i ./*.blktrace.0 -d ./bp.bin -o bp.txt -w 0:130 8,16 12 1 0.000000000 8632 Q R 0 + 128 [vgdisplay] 8,16 12 0 0.000008612 0 m N cfq8632S / alloced 8,16 12 2 0.000008807 8632 G R 0 + 128 [vgdisplay] 8,16 12 3 0.000009475 8632 P N [vgdisplay] 8,16 12 4 0.000009686 8632 I R 0 + 128 [vgdisplay] 8,16 12 0 0.000010338 0 m N cfq8632S / insert_request 8,16 12 0 0.000010901 0 m N cfq8632S / add_to_rr 8,16 12 0 0.000011620 0 m N cfq8632S / idle=0 8,16 12 5 0.000011907 8632 U N [vgdisplay] 1 8,16 12 0 0.000012643 0 m N cfq workload slice:30 Please help. Thanks -- To unsubscribe from this list: send the line "unsubscribe linux-btrace" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
