Hi, I noticed in some traces that I was seeing summaries like the following: Total (sde): Reads Queued: 76, 304KiB Writes Queued: 16,384, 1,048MiB Read Dispatches: 76, 304KiB Write Dispatches: 2,210, 1,048MiB Reads Requeued: 0 Writes Requeued: 0 Reads Completed: 76, 304KiB Writes Completed: 2,210, 1,048MiB Read Merges: 0, 0KiB Write Merges: 14,174, 907,136KiB PC Reads Queued: 0, 0KiB PC Writes Queued: 0, 0KiB PC Read Disp.: 4, 0KiB PC Write Disp.: 0, 0KiB PC Reads Req.: 0 PC Writes Req.: 0 PC Reads Compl.: 4 PC Writes Compl.: 2,210 IO unplugs: 2,124 Timer unplugs: 0 Note how there were no PC Writes dispatched, but there were 2210 completed. It turns out to be a minor typo in the code. The attached patch fixes the reporting for me. Cheers, Jeff Signed-off-by: Jeff Moyer <jmoyer@xxxxxxxxxx> diff --git a/blkparse.c b/blkparse.c index 7ee9f9d..8d5746f 100644 --- a/blkparse.c +++ b/blkparse.c @@ -1675,7 +1675,7 @@ static void dump_io_stats(struct per_dev_info *pdi, struct io_stats *ios, fprintf(ofp, " PC Reads Req.: %s\t\t", size_cnv(x, ios->rrqueue_pc, 0)); fprintf(ofp, " PC Writes Req.: %s\n", size_cnv(x, ios->wrqueue_pc, 0)); fprintf(ofp, " PC Reads Compl.: %s\t\t", size_cnv(x, ios->creads_pc, 0)); - fprintf(ofp, " PC Writes Compl.: %s\n", size_cnv(x, ios->cwrites, 0)); + fprintf(ofp, " PC Writes Compl.: %s\n", size_cnv(x, ios->cwrites_pc, 0)); } fprintf(ofp, " IO unplugs: %'8lu%8c\t", ios->io_unplugs, ' '); fprintf(ofp, " Timer unplugs: %'8lu\n", ios->timer_unplugs); -- 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
