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lktm/drivers/block/sampleblk/labs/lab2/perf_block_bio_backmerge.log

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# To display the perf.data header info, please use --header/--header-only options.
#
# Samples: 260 of event 'block:block_bio_backmerge'
# Event count (approx.): 260
#
# Children Self Command Shared Object Symbol
# ........ ........ ....... ................ ...............................
#
100.00% 0.00% fio [unknown] [.] 0000000000000000
|
---0
100.00% 0.00% fio libc-2.17.so [.] posix_fadvise64
|
---posix_fadvise64
0
100.00% 0.00% fio [kernel.vmlinux] [k] return_from_SYSCALL_64
|
---return_from_SYSCALL_64
posix_fadvise64
0
100.00% 0.00% fio [kernel.vmlinux] [k] do_syscall_64
|
---do_syscall_64
return_from_SYSCALL_64
posix_fadvise64
0
100.00% 0.00% fio [kernel.vmlinux] [k] sys_fadvise64
|
---sys_fadvise64
do_syscall_64
return_from_SYSCALL_64
posix_fadvise64
0
100.00% 0.00% fio [kernel.vmlinux] [k] __filemap_fdatawrite_range
|
---__filemap_fdatawrite_range
sys_fadvise64
do_syscall_64
return_from_SYSCALL_64
posix_fadvise64
0
100.00% 0.00% fio [kernel.vmlinux] [k] do_writepages
|
---do_writepages
__filemap_fdatawrite_range
sys_fadvise64
do_syscall_64
return_from_SYSCALL_64
posix_fadvise64
0
100.00% 0.00% fio [ext4] [k] ext4_writepages
|
---ext4_writepages
do_writepages
__filemap_fdatawrite_range
sys_fadvise64
do_syscall_64
return_from_SYSCALL_64
posix_fadvise64
0
100.00% 0.00% fio [ext4] [k] ext4_io_submit
|
---ext4_io_submit
|
|--94.23%-- ext4_writepages
| do_writepages
| __filemap_fdatawrite_range
| sys_fadvise64
| do_syscall_64
| return_from_SYSCALL_64
| posix_fadvise64
| 0
|
--5.77%-- ext4_bio_write_page
mpage_submit_page
mpage_process_page_bufs
mpage_prepare_extent_to_map
ext4_writepages
do_writepages
__filemap_fdatawrite_range
sys_fadvise64
do_syscall_64
return_from_SYSCALL_64
posix_fadvise64
0
100.00% 0.00% fio [kernel.vmlinux] [k] submit_bio
|
---submit_bio
ext4_io_submit
|
|--94.23%-- ext4_writepages
| do_writepages
| __filemap_fdatawrite_range
| sys_fadvise64
| do_syscall_64
| return_from_SYSCALL_64
| posix_fadvise64
| 0
|
--5.77%-- ext4_bio_write_page
mpage_submit_page
mpage_process_page_bufs
mpage_prepare_extent_to_map
ext4_writepages
do_writepages
__filemap_fdatawrite_range
sys_fadvise64
do_syscall_64
return_from_SYSCALL_64
posix_fadvise64
0
100.00% 0.00% fio [kernel.vmlinux] [k] generic_make_request
|
---generic_make_request
submit_bio
ext4_io_submit
|
|--94.23%-- ext4_writepages
| do_writepages
| __filemap_fdatawrite_range
| sys_fadvise64
| do_syscall_64
| return_from_SYSCALL_64
| posix_fadvise64
| 0
|
--5.77%-- ext4_bio_write_page
mpage_submit_page
mpage_process_page_bufs
mpage_prepare_extent_to_map
ext4_writepages
do_writepages
__filemap_fdatawrite_range
sys_fadvise64
do_syscall_64
return_from_SYSCALL_64
posix_fadvise64
0
100.00% 0.00% fio [kernel.vmlinux] [k] blk_queue_bio
|
---blk_queue_bio
generic_make_request
submit_bio
ext4_io_submit
|
|--94.23%-- ext4_writepages
| do_writepages
| __filemap_fdatawrite_range
| sys_fadvise64
| do_syscall_64
| return_from_SYSCALL_64
| posix_fadvise64
| 0
|
--5.77%-- ext4_bio_write_page
mpage_submit_page
mpage_process_page_bufs
mpage_prepare_extent_to_map
ext4_writepages
do_writepages
__filemap_fdatawrite_range
sys_fadvise64
do_syscall_64
return_from_SYSCALL_64
posix_fadvise64
0
100.00% 0.00% fio [kernel.vmlinux] [k] blk_attempt_plug_merge
|
---blk_attempt_plug_merge
blk_queue_bio
generic_make_request
submit_bio
ext4_io_submit
|
|--94.23%-- ext4_writepages
| do_writepages
| __filemap_fdatawrite_range
| sys_fadvise64
| do_syscall_64
| return_from_SYSCALL_64
| posix_fadvise64
| 0
|
--5.77%-- ext4_bio_write_page
mpage_submit_page
mpage_process_page_bufs
mpage_prepare_extent_to_map
ext4_writepages
do_writepages
__filemap_fdatawrite_range
sys_fadvise64
do_syscall_64
return_from_SYSCALL_64
posix_fadvise64
0
100.00% 100.00% fio [kernel.vmlinux] [k] bio_attempt_back_merge
|
---bio_attempt_back_merge
blk_attempt_plug_merge
blk_queue_bio
generic_make_request
submit_bio
ext4_io_submit
|
|--94.23%-- ext4_writepages
| do_writepages
| __filemap_fdatawrite_range
| sys_fadvise64
| do_syscall_64
| return_from_SYSCALL_64
| posix_fadvise64
| 0
|
--5.77%-- ext4_bio_write_page
mpage_submit_page
mpage_process_page_bufs
mpage_prepare_extent_to_map
ext4_writepages
do_writepages
__filemap_fdatawrite_range
sys_fadvise64
do_syscall_64
return_from_SYSCALL_64
posix_fadvise64
0
5.77% 0.00% fio [ext4] [k] mpage_prepare_extent_to_map
|
---mpage_prepare_extent_to_map
ext4_writepages
do_writepages
__filemap_fdatawrite_range
sys_fadvise64
do_syscall_64
return_from_SYSCALL_64
posix_fadvise64
0
5.77% 0.00% fio [ext4] [k] mpage_process_page_bufs
|
---mpage_process_page_bufs
mpage_prepare_extent_to_map
ext4_writepages
do_writepages
__filemap_fdatawrite_range
sys_fadvise64
do_syscall_64
return_from_SYSCALL_64
posix_fadvise64
0
5.77% 0.00% fio [ext4] [k] mpage_submit_page
|
---mpage_submit_page
mpage_process_page_bufs
mpage_prepare_extent_to_map
ext4_writepages
do_writepages
__filemap_fdatawrite_range
sys_fadvise64
do_syscall_64
return_from_SYSCALL_64
posix_fadvise64
0
5.77% 0.00% fio [ext4] [k] ext4_bio_write_page
|
---ext4_bio_write_page
mpage_submit_page
mpage_process_page_bufs
mpage_prepare_extent_to_map
ext4_writepages
do_writepages
__filemap_fdatawrite_range
sys_fadvise64
do_syscall_64
return_from_SYSCALL_64
posix_fadvise64
0
#
# (For a higher level overview, try: perf report --sort comm,dso)
#