Hi,
This patch series adds support to track more request based flags and
different request fields to the blktrace infrastructure.
In this series, we increase the action, action mask field and add
priority and priority mask field to existing infrastructure.
We add new structures to hold the trace where we increase the size of
the action field and add a new member to track the priority of the I/O.
For the trace management side we add new IOCTLs so that user can
configure trace extensions from the blktrace user-space tools.
The RFC is still light on the details but with new IOCTLs I was able to
get the code running with user-space tools. There is still some more
scope to optimize the code and reducing the duplicate code, but I kept
it simple for now so that it is easy to review.
For sample execution please refer the output at the end of the this
file. Folllwing is the patch distribution :-
It will be great if someone can review this code and provide some
feedback.
Chaitanya Kulkarni (46):
Update headers and introduce new structures and IOCTLs.
blktrace_api: add new trace definitions
blktrace_api: add new trace definition
blkdev.h: add new trace ext as a queue member
blktrace: introduce new ioctls
Update blktrace.c with core APIs.
blktrace: add a new global list
blktrace: add trace note APIs
blktrace: add act and prio check helpers
blktrace: add core trace API
Update indivisual tracepoints.
blktrace: update blk_add_trace_rq()
blktrace: update blk_add_trace_rq_insert()
blktrace: update blk_add_trace_rq_issue()
blktrace: update blk_add_trace_rq_requeue()
blktrace: update blk_add_trace_rq_complete()
blktrace: update blk_add_trace_bio()
blktrace: update blk_add_trace_bio_bounce()
blktrace: update blk_add_trace_bio_complete()
blktrace: update blk_add_trace_bio_backmerge()
blktrace: update blk_add_trace_bio_frontmerge()
blktrace: update blk_add_trace_bio_queue()
blktrace: update blk_add_trace_getrq()
blktrace: update blk_add_trace_sleeprq()
blktrace: update blk_add_trace_plug()
blktrace: update blk_add_trace_unplug()
blktrace: update blk_add_trace_split()
blktrace: update blk_add_trace_bio_remap()
blktrace: update blk_add_trace_rq_remap()
blktrace: update blk_add_driver_data()
Misc updates for tracer.
blktrace: add a new formatting routine
blktrace: add trace entry & pdu helpers
blktrace: add blk_log_xxx helpers()
blktrace: link blk_log_xxx() to trace action
blktrace: add trace event print helper
blktrace: add trace_synthesize helper
blktrace: add trace print helpers
blktrace: add blkext tracer
Implement new IOCTLs.
blktrace: implement setup-start-stop ioclts
block: update blkdev_ioctl with new trace ioctls
Update block layer and rest of fs/drivers/mm so that we can report
correct priority value also update null_blk for testing.
block: set ioprio for zone-reset bio
block: set ioprio for flush bio
block: set ioprio for write-zeroes, discard etc
null_blk: add write-zeroes flag to nullb_device
null_blk: add module param discard/write-zeroes
drivers: set bio iopriority field
fs: set bio iopriority field
power/swap: set bio iopriority field
mm: set bio iopriority field
block/blk-flush.c | 2 +
block/blk-lib.c | 6 +
block/blk-zoned.c | 1 +
block/ioctl.c | 4 +
drivers/block/drbd/drbd_actlog.c | 2 +
drivers/block/drbd/drbd_bitmap.c | 3 +
drivers/block/null_blk.h | 1 +
drivers/block/null_blk_main.c | 37 +-
drivers/block/xen-blkback/blkback.c | 3 +
drivers/block/zram/zram_drv.c | 2 +
drivers/lightnvm/pblk-read.c | 2 +
drivers/lightnvm/pblk-read.c.rej | 10 +
drivers/lightnvm/pblk-write.c | 2 +
drivers/md/bcache/journal.c | 2 +
drivers/md/bcache/super.c | 2 +
drivers/md/dm-bufio.c | 2 +
drivers/md/dm-cache-target.c | 1 +
drivers/md/dm-io.c | 2 +
drivers/md/dm-log-writes.c | 5 +
drivers/md/dm-thin.c | 1 +
drivers/md/dm-writecache.c | 2 +
drivers/md/dm-zoned-metadata.c | 4 +
drivers/md/md.c | 4 +
drivers/md/raid5-cache.c | 4 +
drivers/md/raid5-ppl.c | 3 +
drivers/nvme/target/io-cmd-bdev.c | 7 +
drivers/nvme/target/io-cmd-file.c | 1 +
drivers/staging/erofs/internal.h | 3 +
drivers/target/target_core_iblock.c | 3 +
fs/btrfs/disk-io.c | 1 +
fs/btrfs/extent_io.c | 2 +
fs/btrfs/raid56.c | 5 +
fs/btrfs/scrub.c | 2 +
fs/btrfs/volumes.c | 2 +
fs/buffer.c | 1 +
fs/crypto/bio.c | 1 +
fs/direct-io.c | 1 +
fs/ext4/page-io.c | 1 +
fs/ext4/readpage.c | 1 +
fs/f2fs/data.c | 3 +-
fs/f2fs/segment.c | 1 +
fs/gfs2/lops.c | 1 +
fs/gfs2/meta_io.c | 1 +
fs/gfs2/ops_fstype.c | 1 +
fs/hfsplus/wrapper.c | 1 +
fs/iomap.c | 1 +
fs/jfs/jfs_logmgr.c | 2 +
fs/jfs/jfs_metapage.c | 2 +
fs/mpage.c | 1 +
fs/nfs/blocklayout/blocklayout.c | 1 +
fs/nilfs2/segbuf.c | 1 +
fs/ocfs2/cluster/heartbeat.c | 1 +
fs/xfs/xfs_aops.c | 2 +
fs/xfs/xfs_buf.c | 1 +
include/linux/blkdev.h | 3 +
include/linux/blktrace_api.h | 18 +
include/uapi/linux/blktrace_api.h | 105 ++-
include/uapi/linux/fs.h | 4 +
kernel/power/swap.c | 1 +
kernel/trace/blktrace.c | 1254 +++++++++++++++++++++++++--
kernel/trace/trace.h | 1 +
mm/page_io.c | 1 +
62 files changed, 1449 insertions(+), 96 deletions(-)
create mode 100644 drivers/lightnvm/pblk-read.c.rej
Following is the sample execution of the newly added trace request
operations zone-reset and write-zeroes along with the support for
priority tracking.
Tracing Zone Reset (REQ_OP_ZONE_RESET) with blktrace extensions:-
for i in 1 2 3 4 5 6 7 8 9 A B C D E F;
do
echo Using "Prio Mask : 0x${i} ";
# specify '-P' priority '-E' extension '-y' actiom
./blktrace -P -E -X ${i} -y zone_reset -d /dev/nullb0 -o - \
| ./blkparse -P -X ${i} -E -i -
done
>From other terminal :-
for ((i=0; i<16; i++))
do
local len=2621440
local dev=/dev/nullb0
for prio in `seq 0 3`
do echo "$prio"
ionice -c ${prio} blkzone reset ${dev} -o 0 -l ${len}
done
sleep 2
killall blkparse
killall blktrace
sleep 2
done
Using Prio Mask : 0x1
252,0 5 1 2.834441556 5654 Q ZR N 0 + 0 [blkzone]
252,0 5 2 2.834448323 5654 G ZR N 0 + 0 [blkzone]
252,0 5 3 2.834451419 5654 Q ZR N 524288 + 0 [blkzone]
252,0 5 4 2.834453433 5654 G ZR N 524288 + 0 [blkzone]
252,0 5 5 2.834454419 5654 Q ZR N 1048576 + 0 [blkzone]
252,0 5 6 2.834455833 5654 G ZR N 1048576 + 0 [blkzone]
252,0 5 7 2.834456799 5654 Q ZR N 1572864 + 0 [blkzone]
252,0 5 8 2.834458339 5654 G ZR N 1572864 + 0 [blkzone]
252,0 5 9 2.834459273 5654 Q ZRS N 2097152 + 0 [blkzone]
252,0 5 10 2.834460849 5654 G ZRS N 2097152 + 0 [blkzone]
Using Prio Mask : 0x2
252,0 8 1 1.881561353 5679 Q ZR R 0 + 0 [blkzone]
252,0 8 2 1.881564976 5679 G ZR R 0 + 0 [blkzone]
252,0 8 3 1.881566829 5679 Q ZR R 524288 + 0 [blkzone]
252,0 8 4 1.881568806 5679 G ZR R 524288 + 0 [blkzone]
252,0 8 5 1.881569789 5679 Q ZR R 1048576 + 0 [blkzone]
252,0 8 6 1.881571229 5679 G ZR R 1048576 + 0 [blkzone]
252,0 8 7 1.881572233 5679 Q ZR R 1572864 + 0 [blkzone]
252,0 8 8 1.881573309 5679 G ZR R 1572864 + 0 [blkzone]
252,0 8 9 1.881574099 5679 Q ZRS R 2097152 + 0 [blkzone]
252,0 8 10 1.881575163 5679 G ZRS R 2097152 + 0 [blkzone]
Using Prio Mask : 0x3
252,0 4 1 1.880523631 5711 Q ZR R 0 + 0 [blkzone]
252,0 4 2 1.880527443 5711 G ZR R 0 + 0 [blkzone]
252,0 4 3 1.880529246 5711 Q ZR R 524288 + 0 [blkzone]
252,0 4 4 1.880530916 5711 G ZR R 524288 + 0 [blkzone]
252,0 4 5 1.880531881 5711 Q ZR R 1048576 + 0 [blkzone]
252,0 4 6 1.880533056 5711 G ZR R 1048576 + 0 [blkzone]
252,0 4 7 1.880533986 5711 Q ZR R 1572864 + 0 [blkzone]
252,0 4 8 1.880535116 5711 G ZR R 1572864 + 0 [blkzone]
252,0 4 9 1.880535911 5711 Q ZRS R 2097152 + 0 [blkzone]
252,0 4 10 1.880536883 5711 G ZRS R 2097152 + 0 [blkzone]
252,0 3 1 1.877350251 5710 Q ZR N 0 + 0 [blkzone]
252,0 3 2 1.877359550 5710 G ZR N 0 + 0 [blkzone]
252,0 3 3 1.877362833 5710 Q ZR N 524288 + 0 [blkzone]
252,0 3 4 1.877365046 5710 G ZR N 524288 + 0 [blkzone]
252,0 3 5 1.877366100 5710 Q ZR N 1048576 + 0 [blkzone]
252,0 3 6 1.877367580 5710 G ZR N 1048576 + 0 [blkzone]
252,0 3 7 1.877368526 5710 Q ZR N 1572864 + 0 [blkzone]
252,0 3 8 1.877369570 5710 G ZR N 1572864 + 0 [blkzone]
252,0 3 9 1.877370470 5710 Q ZRS N 2097152 + 0 [blkzone]
252,0 3 10 1.877371806 5710 G ZRS N 2097152 + 0 [blkzone]
Using Prio Mask : 0x4
252,0 4 1 1.881693118 5737 Q ZR B 0 + 0 [blkzone]
252,0 4 2 1.881696768 5737 G ZR B 0 + 0 [blkzone]
252,0 4 3 1.881698931 5737 Q ZR B 524288 + 0 [blkzone]
252,0 4 4 1.881712511 5737 G ZR B 524288 + 0 [blkzone]
252,0 4 5 1.881713791 5737 Q ZR B 1048576 + 0 [blkzone]
252,0 4 6 1.881715584 5737 G ZR B 1048576 + 0 [blkzone]
252,0 4 7 1.881716501 5737 Q ZR B 1572864 + 0 [blkzone]
252,0 4 8 1.881717991 5737 G ZR B 1572864 + 0 [blkzone]
252,0 4 9 1.881718728 5737 Q ZRS B 2097152 + 0 [blkzone]
252,0 4 10 1.881720051 5737 G ZRS B 2097152 + 0 [blkzone]
Using Prio Mask : 0x5
252,0 1 1 1.883719603 5763 Q ZR B 0 + 0 [blkzone]
252,0 1 2 1.883722846 5763 G ZR B 0 + 0 [blkzone]
252,0 1 3 1.883724859 5763 Q ZR B 524288 + 0 [blkzone]
252,0 1 4 1.883727359 5763 G ZR B 524288 + 0 [blkzone]
252,0 1 5 1.883728363 5763 Q ZR B 1048576 + 0 [blkzone]
252,0 1 6 1.883729849 5763 G ZR B 1048576 + 0 [blkzone]
252,0 1 7 1.883730806 5763 Q ZR B 1572864 + 0 [blkzone]
252,0 1 8 1.883732039 5763 G ZR B 1572864 + 0 [blkzone]
252,0 1 9 1.883732793 5763 Q ZRS B 2097152 + 0 [blkzone]
252,0 1 10 1.883733889 5763 G ZRS B 2097152 + 0 [blkzone]
252,0 4 1 1.877114899 5760 Q ZR N 0 + 0 [blkzone]
252,0 4 2 1.877124353 5760 G ZR N 0 + 0 [blkzone]
252,0 4 3 1.877127613 5760 Q ZR N 524288 + 0 [blkzone]
252,0 4 4 1.877129806 5760 G ZR N 524288 + 0 [blkzone]
252,0 4 5 1.877130716 5760 Q ZR N 1048576 + 0 [blkzone]
252,0 4 6 1.877132076 5760 G ZR N 1048576 + 0 [blkzone]
252,0 4 7 1.877132946 5760 Q ZR N 1572864 + 0 [blkzone]
252,0 4 8 1.877134016 5760 G ZR N 1572864 + 0 [blkzone]
252,0 4 9 1.877134833 5760 Q ZRS N 2097152 + 0 [blkzone]
252,0 4 10 1.877136286 5760 G ZRS N 2097152 + 0 [blkzone]
Using Prio Mask : 0x6
252,0 4 1 1.880316987 5794 Q ZR R 0 + 0 [blkzone]
252,0 4 2 1.880320737 5794 G ZR R 0 + 0 [blkzone]
252,0 4 3 1.880322433 5794 Q ZR R 524288 + 0 [blkzone]
252,0 4 4 1.880324030 5794 G ZR R 524288 + 0 [blkzone]
252,0 4 5 1.880324813 5794 Q ZR R 1048576 + 0 [blkzone]
252,0 4 6 1.880325990 5794 G ZR R 1048576 + 0 [blkzone]
252,0 4 7 1.880326763 5794 Q ZR R 1572864 + 0 [blkzone]
252,0 4 8 1.880327777 5794 G ZR R 1572864 + 0 [blkzone]
252,0 4 9 1.880328597 5794 Q ZRS R 2097152 + 0 [blkzone]
252,0 4 10 1.880330040 5794 G ZRS R 2097152 + 0 [blkzone]
252,0 6 1 1.883474794 5796 Q ZR B 0 + 0 [blkzone]
252,0 6 2 1.883478534 5796 G ZR B 0 + 0 [blkzone]
252,0 6 3 1.883480888 5796 Q ZR B 524288 + 0 [blkzone]
252,0 6 4 1.883482694 5796 G ZR B 524288 + 0 [blkzone]
252,0 6 5 1.883483674 5796 Q ZR B 1048576 + 0 [blkzone]
252,0 6 6 1.883485031 5796 G ZR B 1048576 + 0 [blkzone]
252,0 6 7 1.883485984 5796 Q ZR B 1572864 + 0 [blkzone]
252,0 6 8 1.883487511 5796 G ZR B 1572864 + 0 [blkzone]
252,0 6 9 1.883488328 5796 Q ZRS B 2097152 + 0 [blkzone]
252,0 6 10 1.883490664 5796 G ZRS B 2097152 + 0 [blkzone]
Using Prio Mask : 0x7
252,0 4 1 1.883072943 5817 Q ZR N 0 + 0 [blkzone]
252,0 4 2 1.883077257 5817 G ZR N 0 + 0 [blkzone]
252,0 4 3 1.883079241 5817 Q ZR N 524288 + 0 [blkzone]
252,0 4 4 1.883081038 5817 G ZR N 524288 + 0 [blkzone]
252,0 4 5 1.883082011 5817 Q ZR N 1048576 + 0 [blkzone]
252,0 4 6 1.883083371 5817 G ZR N 1048576 + 0 [blkzone]
252,0 4 7 1.883084281 5817 Q ZR N 1572864 + 0 [blkzone]
252,0 4 8 1.883085423 5817 G ZR N 1572864 + 0 [blkzone]
252,0 4 9 1.883086192 5817 Q ZRS N 2097152 + 0 [blkzone]
252,0 4 10 1.883087288 5817 G ZRS N 2097152 + 0 [blkzone]
252,0 5 1 1.886300681 5818 Q ZR R 0 + 0 [blkzone]
252,0 5 2 1.886304525 5818 G ZR R 0 + 0 [blkzone]
252,0 5 3 1.886306417 5818 Q ZR R 524288 + 0 [blkzone]
252,0 5 4 1.886308041 5818 G ZR R 524288 + 0 [blkzone]
252,0 5 5 1.886308952 5818 Q ZR R 1048576 + 0 [blkzone]
252,0 5 6 1.886310325 5818 G ZR R 1048576 + 0 [blkzone]
252,0 5 7 1.886311257 5818 Q ZR R 1572864 + 0 [blkzone]
252,0 5 8 1.886312217 5818 G ZR R 1572864 + 0 [blkzone]
252,0 5 9 1.886312965 5818 Q ZRS R 2097152 + 0 [blkzone]
252,0 5 10 1.886314088 5818 G ZRS R 2097152 + 0 [blkzone]
252,0 6 1 1.889706711 5820 Q ZR B 0 + 0 [blkzone]
252,0 6 2 1.889710471 5820 G ZR B 0 + 0 [blkzone]
252,0 6 3 1.889712545 5820 Q ZR B 524288 + 0 [blkzone]
252,0 6 4 1.889714351 5820 G ZR B 524288 + 0 [blkzone]
252,0 6 5 1.889715441 5820 Q ZR B 1048576 + 0 [blkzone]
252,0 6 6 1.889716765 5820 G ZR B 1048576 + 0 [blkzone]
252,0 6 7 1.889717708 5820 Q ZR B 1572864 + 0 [blkzone]
252,0 6 8 1.889718795 5820 G ZR B 1572864 + 0 [blkzone]
252,0 6 9 1.889719571 5820 Q ZRS B 2097152 + 0 [blkzone]
252,0 6 10 1.889725381 5820 G ZRS B 2097152 + 0 [blkzone]
Using Prio Mask : 0x8
252,0 6 1 1.894128638 5845 Q ZR I 0 + 0 [blkzone]
252,0 6 2 1.894135178 5845 G ZR I 0 + 0 [blkzone]
252,0 6 3 1.894137652 5845 Q ZR I 524288 + 0 [blkzone]
252,0 6 4 1.894139588 5845 G ZR I 524288 + 0 [blkzone]
252,0 6 5 1.894140378 5845 Q ZR I 1048576 + 0 [blkzone]
252,0 6 6 1.894141765 5845 G ZR I 1048576 + 0 [blkzone]
252,0 6 7 1.894142522 5845 Q ZR I 1572864 + 0 [blkzone]
252,0 6 8 1.894143628 5845 G ZR I 1572864 + 0 [blkzone]
252,0 6 9 1.894144392 5845 Q ZRS I 2097152 + 0 [blkzone]
252,0 6 10 1.894145422 5845 G ZRS I 2097152 + 0 [blkzone]
Using Prio Mask : 0x9
252,0 1 1 1.890156939 5865 Q ZR N 0 + 0 [blkzone]
252,0 1 2 1.890160815 5865 G ZR N 0 + 0 [blkzone]
252,0 1 3 1.890163022 5865 Q ZR N 524288 + 0 [blkzone]
252,0 1 4 1.890164472 5865 G ZR N 524288 + 0 [blkzone]
252,0 1 5 1.890165285 5865 Q ZR N 1048576 + 0 [blkzone]
252,0 1 6 1.890166315 5865 G ZR N 1048576 + 0 [blkzone]
252,0 1 7 1.890167285 5865 Q ZR N 1572864 + 0 [blkzone]
252,0 1 8 1.890168285 5865 G ZR N 1572864 + 0 [blkzone]
252,0 1 9 1.890169135 5865 Q ZRS N 2097152 + 0 [blkzone]
252,0 1 10 1.890170099 5865 G ZRS N 2097152 + 0 [blkzone]
252,0 4 1 1.900328523 5869 Q ZR I 0 + 0 [blkzone]
252,0 4 2 1.900332132 5869 G ZR I 0 + 0 [blkzone]
252,0 4 3 1.900334123 5869 Q ZR I 524288 + 0 [blkzone]
252,0 4 4 1.900335772 5869 G ZR I 524288 + 0 [blkzone]
252,0 4 5 1.900336753 5869 Q ZR I 1048576 + 0 [blkzone]
252,0 4 6 1.900338184 5869 G ZR I 1048576 + 0 [blkzone]
252,0 4 7 1.900339083 5869 Q ZR I 1572864 + 0 [blkzone]
252,0 4 8 1.900340397 5869 G ZR I 1572864 + 0 [blkzone]
252,0 4 9 1.900341107 5869 Q ZRS I 2097152 + 0 [blkzone]
252,0 4 10 1.900342470 5869 G ZRS I 2097152 + 0 [blkzone]
Using Prio Mask : 0xA
252,0 1 1 1.881118090 5890 Q ZR R 0 + 0 [blkzone]
252,0 1 2 1.881121093 5890 G ZR R 0 + 0 [blkzone]
252,0 1 3 1.881122797 5890 Q ZR R 524288 + 0 [blkzone]
252,0 1 4 1.881124074 5890 G ZR R 524288 + 0 [blkzone]
252,0 1 5 1.881124822 5890 Q ZR R 1048576 + 0 [blkzone]
252,0 1 6 1.881125908 5890 G ZR R 1048576 + 0 [blkzone]
252,0 1 7 1.881126613 5890 Q ZR R 1572864 + 0 [blkzone]
252,0 1 8 1.881127763 5890 G ZR R 1572864 + 0 [blkzone]
252,0 1 9 1.881128505 5890 Q ZRS R 2097152 + 0 [blkzone]
252,0 1 10 1.881129853 5890 G ZRS R 2097152 + 0 [blkzone]
252,0 3 1 1.887667345 5893 Q ZR I 0 + 0 [blkzone]
252,0 3 2 1.887671162 5893 G ZR I 0 + 0 [blkzone]
252,0 3 3 1.887673430 5893 Q ZR I 524288 + 0 [blkzone]
252,0 3 4 1.887675750 5893 G ZR I 524288 + 0 [blkzone]
252,0 3 5 1.887676895 5893 Q ZR I 1048576 + 0 [blkzone]
252,0 3 6 1.887678300 5893 G ZR I 1048576 + 0 [blkzone]
252,0 3 7 1.887679232 5893 Q ZR I 1572864 + 0 [blkzone]
252,0 3 8 1.887680170 5893 G ZR I 1572864 + 0 [blkzone]
252,0 3 9 1.887680955 5893 Q ZRS I 2097152 + 0 [blkzone]
252,0 3 10 1.887682355 5893 G ZRS I 2097152 + 0 [blkzone]
Using Prio Mask : 0xB
252,0 3 1 1.877653462 5914 Q ZR R 0 + 0 [blkzone]
252,0 3 2 1.877657497 5914 G ZR R 0 + 0 [blkzone]
252,0 3 3 1.877659827 5914 Q ZR R 524288 + 0 [blkzone]
252,0 3 4 1.877662193 5914 G ZR R 524288 + 0 [blkzone]
252,0 3 5 1.877663120 5914 Q ZR R 1048576 + 0 [blkzone]
252,0 3 6 1.877664750 5914 G ZR R 1048576 + 0 [blkzone]
252,0 3 7 1.877665830 5914 Q ZR R 1572864 + 0 [blkzone]
252,0 3 8 1.877667316 5914 G ZR R 1572864 + 0 [blkzone]
252,0 3 9 1.877668052 5914 Q ZRS R 2097152 + 0 [blkzone]
252,0 3 10 1.877669489 5914 G ZRS R 2097152 + 0 [blkzone]
252,0 6 1 1.884158989 5917 Q ZR I 0 + 0 [blkzone]
252,0 6 2 1.884162489 5917 G ZR I 0 + 0 [blkzone]
252,0 6 3 1.884164559 5917 Q ZR I 524288 + 0 [blkzone]
252,0 6 4 1.884166292 5917 G ZR I 524288 + 0 [blkzone]
252,0 6 5 1.884167249 5917 Q ZR I 1048576 + 0 [blkzone]
252,0 6 6 1.884168696 5917 G ZR I 1048576 + 0 [blkzone]
252,0 6 7 1.884169686 5917 Q ZR I 1572864 + 0 [blkzone]
252,0 6 8 1.884170902 5917 G ZR I 1572864 + 0 [blkzone]
252,0 6 9 1.884171692 5917 Q ZRS I 2097152 + 0 [blkzone]
252,0 6 10 1.884172946 5917 G ZRS I 2097152 + 0 [blkzone]
252,0 2 1 1.873935412 5913 Q ZR N 0 + 0 [blkzone]
252,0 2 2 1.873939768 5913 G ZR N 0 + 0 [blkzone]
252,0 2 3 1.873941699 5913 Q ZR N 524288 + 0 [blkzone]
252,0 2 4 1.873943554 5913 G ZR N 524288 + 0 [blkzone]
252,0 2 5 1.873944291 5913 Q ZR N 1048576 + 0 [blkzone]
252,0 2 6 1.873946251 5913 G ZR N 1048576 + 0 [blkzone]
252,0 2 7 1.873946994 5913 Q ZR N 1572864 + 0 [blkzone]
252,0 2 8 1.873948462 5913 G ZR N 1572864 + 0 [blkzone]
252,0 2 9 1.873949179 5913 Q ZRS N 2097152 + 0 [blkzone]
252,0 2 10 1.873950688 5913 G ZRS N 2097152 + 0 [blkzone]
Using Prio Mask : 0xC
252,0 8 1 1.883974886 5940 Q ZR B 0 + 0 [blkzone]
252,0 8 2 1.883978509 5940 G ZR B 0 + 0 [blkzone]
252,0 8 3 1.883980416 5940 Q ZR B 524288 + 0 [blkzone]
252,0 8 4 1.883982116 5940 G ZR B 524288 + 0 [blkzone]
252,0 8 5 1.883983136 5940 Q ZR B 1048576 + 0 [blkzone]
252,0 8 6 1.883984593 5940 G ZR B 1048576 + 0 [blkzone]
252,0 8 7 1.883985386 5940 Q ZR B 1572864 + 0 [blkzone]
252,0 8 8 1.883986299 5940 G ZR B 1572864 + 0 [blkzone]
252,0 8 9 1.883987073 5940 Q ZRS B 2097152 + 0 [blkzone]
252,0 8 10 1.883988379 5940 G ZRS B 2097152 + 0 [blkzone]
252,0 8 11 1.887235783 5941 Q ZR I 0 + 0 [blkzone]
252,0 8 12 1.887238943 5941 G ZR I 0 + 0 [blkzone]
252,0 8 13 1.887240726 5941 Q ZR I 524288 + 0 [blkzone]
252,0 8 14 1.887264623 5941 G ZR I 524288 + 0 [blkzone]
252,0 8 15 1.887265776 5941 Q ZR I 1048576 + 0 [blkzone]
252,0 8 16 1.887267393 5941 G ZR I 1048576 + 0 [blkzone]
252,0 8 17 1.887268139 5941 Q ZR I 1572864 + 0 [blkzone]
252,0 8 18 1.887269196 5941 G ZR I 1572864 + 0 [blkzone]
252,0 8 19 1.887269996 5941 Q ZRS I 2097152 + 0 [blkzone]
252,0 8 20 1.887270959 5941 G ZRS I 2097152 + 0 [blkzone]
Using Prio Mask : 0xD
252,0 5 1 1.881926167 5961 Q ZR N 0 + 0 [blkzone]
252,0 5 2 1.881936013 5961 G ZR N 0 + 0 [blkzone]
252,0 5 3 1.881939187 5961 Q ZR N 524288 + 0 [blkzone]
252,0 5 4 1.881941407 5961 G ZR N 524288 + 0 [blkzone]
252,0 5 5 1.881942450 5961 Q ZR N 1048576 + 0 [blkzone]
252,0 5 6 1.881944610 5961 G ZR N 1048576 + 0 [blkzone]
252,0 5 7 1.881945593 5961 Q ZR N 1572864 + 0 [blkzone]
252,0 5 8 1.881947180 5961 G ZR N 1572864 + 0 [blkzone]
252,0 5 9 1.881948110 5961 Q ZRS N 2097152 + 0 [blkzone]
252,0 5 10 1.881949443 5961 G ZRS N 2097152 + 0 [blkzone]
252,0 8 1 1.888756648 5964 Q ZR B 0 + 0 [blkzone]
252,0 8 2 1.888760021 5964 G ZR B 0 + 0 [blkzone]
252,0 8 3 1.888762038 5964 Q ZR B 524288 + 0 [blkzone]
252,0 8 4 1.888763528 5964 G ZR B 524288 + 0 [blkzone]
252,0 8 5 1.888764401 5964 Q ZR B 1048576 + 0 [blkzone]
252,0 8 6 1.888765661 5964 G ZR B 1048576 + 0 [blkzone]
252,0 8 7 1.888766531 5964 Q ZR B 1572864 + 0 [blkzone]
252,0 8 8 1.888767675 5964 G ZR B 1572864 + 0 [blkzone]
252,0 8 9 1.888768458 5964 Q ZRS B 2097152 + 0 [blkzone]
252,0 8 10 1.888769921 5964 G ZRS B 2097152 + 0 [blkzone]
252,0 8 11 1.891879776 5965 Q ZR I 0 + 0 [blkzone]
252,0 8 12 1.891882879 5965 G ZR I 0 + 0 [blkzone]
252,0 8 13 1.891884736 5965 Q ZR I 524288 + 0 [blkzone]
252,0 8 14 1.891886419 5965 G ZR I 524288 + 0 [blkzone]
252,0 8 15 1.891887246 5965 Q ZR I 1048576 + 0 [blkzone]
252,0 8 16 1.891888552 5965 G ZR I 1048576 + 0 [blkzone]
252,0 8 17 1.891889409 5965 Q ZR I 1572864 + 0 [blkzone]
252,0 8 18 1.891891532 5965 G ZR I 1572864 + 0 [blkzone]
252,0 8 19 1.891892242 5965 Q ZRS I 2097152 + 0 [blkzone]
252,0 8 20 1.891893712 5965 G ZRS I 2097152 + 0 [blkzone]
Using Prio Mask : 0xE
252,0 3 1 1.883515105 5988 Q ZR B 0 + 0 [blkzone]
252,0 3 2 1.883523278 5988 G ZR B 0 + 0 [blkzone]
252,0 3 3 1.883525945 5988 Q ZR B 524288 + 0 [blkzone]
252,0 3 4 1.883528088 5988 G ZR B 524288 + 0 [blkzone]
252,0 3 5 1.883529042 5988 Q ZR B 1048576 + 0 [blkzone]
252,0 3 6 1.883530365 5988 G ZR B 1048576 + 0 [blkzone]
252,0 3 7 1.883531268 5988 Q ZR B 1572864 + 0 [blkzone]
252,0 3 8 1.883532295 5988 G ZR B 1572864 + 0 [blkzone]
252,0 3 9 1.883533208 5988 Q ZRS B 2097152 + 0 [blkzone]
252,0 3 10 1.883534558 5988 G ZRS B 2097152 + 0 [blkzone]
252,0 8 1 1.886945018 5989 Q ZR I 0 + 0 [blkzone]
252,0 8 2 1.886949388 5989 G ZR I 0 + 0 [blkzone]
252,0 8 3 1.886951582 5989 Q ZR I 524288 + 0 [blkzone]
252,0 8 4 1.886953608 5989 G ZR I 524288 + 0 [blkzone]
252,0 8 5 1.886954631 5989 Q ZR I 1048576 + 0 [blkzone]
252,0 8 6 1.886956341 5989 G ZR I 1048576 + 0 [blkzone]
252,0 8 7 1.886957144 5989 Q ZR I 1572864 + 0 [blkzone]
252,0 8 8 1.886958211 5989 G ZR I 1572864 + 0 [blkzone]
252,0 8 9 1.886958967 5989 Q ZRS I 2097152 + 0 [blkzone]
252,0 8 10 1.886960384 5989 G ZRS I 2097152 + 0 [blkzone]
252,0 2 1 1.879882785 5986 Q ZR R 0 + 0 [blkzone]
252,0 2 2 1.879885951 5986 G ZR R 0 + 0 [blkzone]
252,0 2 3 1.879887731 5986 Q ZR R 524288 + 0 [blkzone]
252,0 2 4 1.879889601 5986 G ZR R 524288 + 0 [blkzone]
252,0 2 5 1.879890405 5986 Q ZR R 1048576 + 0 [blkzone]
252,0 2 6 1.879891408 5986 G ZR R 1048576 + 0 [blkzone]
252,0 2 7 1.879892135 5986 Q ZR R 1572864 + 0 [blkzone]
252,0 2 8 1.879893505 5986 G ZR R 1572864 + 0 [blkzone]
252,0 2 9 1.879894291 5986 Q ZRS R 2097152 + 0 [blkzone]
252,0 2 10 1.879895691 5986 G ZRS R 2097152 + 0 [blkzone]
Using Prio Mask : 0xF
252,0 3 1 1.883856995 6012 Q ZR B 0 + 0 [blkzone]
252,0 3 2 1.883861375 6012 G ZR B 0 + 0 [blkzone]
252,0 3 3 1.883863435 6012 Q ZR B 524288 + 0 [blkzone]
252,0 3 4 1.883865559 6012 G ZR B 524288 + 0 [blkzone]
252,0 3 5 1.883866469 6012 Q ZR B 1048576 + 0 [blkzone]
252,0 3 6 1.883868035 6012 G ZR B 1048576 + 0 [blkzone]
252,0 3 7 1.883868815 6012 Q ZR B 1572864 + 0 [blkzone]
252,0 3 8 1.883870282 6012 G ZR B 1572864 + 0 [blkzone]
252,0 3 9 1.883871189 6012 Q ZRS B 2097152 + 0 [blkzone]
252,0 3 10 1.883872595 6012 G ZRS B 2097152 + 0 [blkzone]
252,0 6 1 1.887079805 6013 Q ZR I 0 + 0 [blkzone]
252,0 6 2 1.887083840 6013 G ZR I 0 + 0 [blkzone]
252,0 6 3 1.887086234 6013 Q ZR I 524288 + 0 [blkzone]
252,0 6 4 1.887088234 6013 G ZR I 524288 + 0 [blkzone]
252,0 6 5 1.887089191 6013 Q ZR I 1048576 + 0 [blkzone]
252,0 6 6 1.887090506 6013 G ZR I 1048576 + 0 [blkzone]
252,0 6 7 1.887091405 6013 Q ZR I 1572864 + 0 [blkzone]
252,0 6 8 1.887092380 6013 G ZR I 1572864 + 0 [blkzone]
252,0 6 9 1.887093140 6013 Q ZRS I 2097152 + 0 [blkzone]
252,0 6 10 1.887094194 6013 G ZRS I 2097152 + 0 [blkzone]
252,0 2 1 1.877553702 6009 Q ZR N 0 + 0 [blkzone]
252,0 2 2 1.877563306 6009 G ZR N 0 + 0 [blkzone]
252,0 2 3 1.877566219 6009 Q ZR N 524288 + 0 [blkzone]
252,0 2 4 1.877568449 6009 G ZR N 524288 + 0 [blkzone]
252,0 2 5 1.877569469 6009 Q ZR N 1048576 + 0 [blkzone]
252,0 2 6 1.877570862 6009 G ZR N 1048576 + 0 [blkzone]
252,0 2 7 1.877571822 6009 Q ZR N 1572864 + 0 [blkzone]
252,0 2 8 1.877572932 6009 G ZR N 1572864 + 0 [blkzone]
252,0 2 9 1.877573859 6009 Q ZRS N 2097152 + 0 [blkzone]
252,0 2 10 1.877575349 6009 G ZRS N 2097152 + 0 [blkzone]
252,0 2 11 1.880596504 6010 Q ZR R 0 + 0 [blkzone]
252,0 2 12 1.880599754 6010 G ZR R 0 + 0 [blkzone]
252,0 2 13 1.880601564 6010 Q ZR R 524288 + 0 [blkzone]
252,0 2 14 1.880603211 6010 G ZR R 524288 + 0 [blkzone]
252,0 2 15 1.880604004 6010 Q ZR R 1048576 + 0 [blkzone]
252,0 2 16 1.880605181 6010 G ZR R 1048576 + 0 [blkzone]
252,0 2 17 1.880605961 6010 Q ZR R 1572864 + 0 [blkzone]
252,0 2 18 1.880606908 6010 G ZR R 1572864 + 0 [blkzone]
252,0 2 19 1.880607658 6010 Q ZRS R 2097152 + 0 [blkzone]
252,0 2 20 1.880608911 6010 G ZRS R 2097152 + 0 [blkzone]
Tracing write-zeroes (REQ_OP_WRITE_ZEROES) with blktrace extensions:-
for i in 1 2 3 4 5 6 7 8 9 A B C D E F
do
echo Using "Prio Mask : 0x${i} "
./blktrace -P -E -X ${i} -y write_zeroes -d /dev/nullb0 -o - \
| ./blkparse -P -X ${i} -E -i -
done
# We use null_blk write_zeroes=1 with the patch present in this RFC.
for ((i=0; i<16; i++))
do
for prio in `seq 0 3`; do echo "$prio";
ionice -c ${prio} blkdiscard -z -o 0 -l 4096 /dev/nullb0;
done;
sleep 2;
killall blkparse;
killall blktrace;
sleep 2;
done
Using Prio Mask : 0x1
252,0 5 1 8.065350073 4655 Q WZS N 0 + 8 [blkdiscard]
252,0 5 2 8.065358706 4655 G WZS N 0 + 8 [blkdiscard]
Using Prio Mask : 0x3
252,0 6 1 1.880889501 4707 Q WZS R 0 + 8 [blkdiscard]
252,0 6 2 1.880896026 4707 G WZS R 0 + 8 [blkdiscard]
252,0 5 1 1.878376120 4706 Q WZS N 0 + 8 [blkdiscard]
252,0 5 2 1.878383914 4706 G WZS N 0 + 8 [blkdiscard]
Using Prio Mask : 0x4
252,0 4 1 1.883751843 4757 Q WZS B 0 + 8 [blkdiscard]
252,0 4 2 1.883755619 4757 G WZS B 0 + 8 [blkdiscard]
Using Prio Mask : 0x5
252,0 3 1 1.877904141 4791 Q WZS N 0 + 8 [blkdiscard]
252,0 3 2 1.877912598 4791 G WZS N 0 + 8 [blkdiscard]
252,0 10 1 1.884097021 4794 Q WZS B 0 + 8 [blkdiscard]
252,0 10 2 1.884100467 4794 G WZS B 0 + 8 [blkdiscard]
Using Prio Mask : 0x6
252,0 10 1 1.883680861 4818 Q WZS B 0 + 8 [blkdiscard]
252,0 10 2 1.883684191 4818 G WZS B 0 + 8 [blkdiscard]
252,0 6 1 1.880637705 4816 Q WZS R 0 + 8 [blkdiscard]
252,0 6 2 1.880641438 4816 G WZS R 0 + 8 [blkdiscard]
Using Prio Mask : 0x7
252,0 6 1 1.881971533 4840 Q WZS R 0 + 8 [blkdiscard]
252,0 6 2 1.881975043 4840 G WZS R 0 + 8 [blkdiscard]
252,0 5 1 1.878780508 4839 Q WZS N 0 + 8 [blkdiscard]
252,0 5 2 1.878788882 4839 G WZS N 0 + 8 [blkdiscard]
252,0 10 1 1.885047668 4842 Q WZS B 0 + 8 [blkdiscard]
252,0 10 2 1.885051246 4842 G WZS B 0 + 8 [blkdiscard]
Using Prio Mask : 0x8
252,0 10 1 1.890996473 4880 Q WZS I 0 + 8 [blkdiscard]
252,0 10 2 1.890999809 4880 G WZS I 0 + 8 [blkdiscard]
Using Prio Mask : 0x9
252,0 6 1 1.871078216 4900 Q WZS N 0 + 8 [blkdiscard]
252,0 6 2 1.871086841 4900 G WZS N 0 + 8 [blkdiscard]
252,0 2 1 1.880381208 4904 Q WZS I 0 + 8 [blkdiscard]
252,0 2 2 1.880384705 4904 G WZS I 0 + 8 [blkdiscard]
Using Prio Mask : 0xA
252,0 5 1 1.881201109 4925 Q WZS R 0 + 8 [blkdiscard]
252,0 5 2 1.881204649 4925 G WZS R 0 + 8 [blkdiscard]
252,0 1 1 1.886961182 4928 Q WZS I 0 + 8 [blkdiscard]
252,0 1 2 1.886964216 4928 G WZS I 0 + 8 [blkdiscard]
Using Prio Mask : 0xB
252,0 6 1 1.874810856 4948 Q WZS N 0 + 8 [blkdiscard]
252,0 6 2 1.874814623 4948 G WZS N 0 + 8 [blkdiscard]
252,0 6 3 1.877785918 4949 Q WZS R 0 + 8 [blkdiscard]
252,0 6 4 1.877789028 4949 G WZS R 0 + 8 [blkdiscard]
252,0 7 1 1.883500596 4952 Q WZS I 0 + 8 [blkdiscard]
252,0 7 2 1.883503596 4952 G WZS I 0 + 8 [blkdiscard]
Using Prio Mask : 0xC
252,0 11 1 1.882699917 4975 Q WZS B 0 + 8 [blkdiscard]
252,0 11 2 1.882703620 4975 G WZS B 0 + 8 [blkdiscard]
252,0 0 1 1.885972593 4976 Q WZS I 0 + 8 [blkdiscard]
252,0 0 2 1.885976013 4976 G WZS I 0 + 8 [blkdiscard]
Using Prio Mask : 0xD
252,0 7 1 1.878177296 4996 Q WZS N 0 + 8 [blkdiscard]
252,0 7 2 1.878180859 4996 G WZS N 0 + 8 [blkdiscard]
252,0 0 1 1.884480996 4999 Q WZS B 0 + 8 [blkdiscard]
252,0 0 2 1.884484218 4999 G WZS B 0 + 8 [blkdiscard]
252,0 1 1 1.887563890 5000 Q WZS I 0 + 8 [blkdiscard]
252,0 1 2 1.887567576 5000 G WZS I 0 + 8 [blkdiscard]
Using Prio Mask : 0xE
252,0 3 1 1.881435821 5021 Q WZS R 0 + 8 [blkdiscard]
252,0 3 2 1.881438889 5021 G WZS R 0 + 8 [blkdiscard]
252,0 4 1 1.884607718 5023 Q WZS B 0 + 8 [blkdiscard]
252,0 4 2 1.884611292 5023 G WZS B 0 + 8 [blkdiscard]
252,0 5 1 1.887815663 5024 Q WZS I 0 + 8 [blkdiscard]
252,0 5 2 1.887818945 5024 G WZS I 0 + 8 [blkdiscard]
Using Prio Mask : 0xF
252,0 3 1 1.876575303 5044 Q WZS N 0 + 8 [blkdiscard]
252,0 3 2 1.876585245 5044 G WZS N 0 + 8 [blkdiscard]
252,0 3 3 1.879540097 5045 Q WZS R 0 + 8 [blkdiscard]
252,0 3 4 1.879543080 5045 G WZS R 0 + 8 [blkdiscard]
252,0 4 1 1.882700388 5047 Q WZS B 0 + 8 [blkdiscard]
252,0 4 2 1.882704065 5047 G WZS B 0 + 8 [blkdiscard]
252,0 5 1 1.885891499 5048 Q WZS I 0 + 8 [blkdiscard]
252,0 5 2 1.885895119 5048 G WZS I 0 + 8 [blkdiscard]
--
2.19.1
