f2fs_io: measure readdir/stat performance
- mkdir dir
- f2fs_io test_lookup_perf -i /mnt/f2fs/dir 50000
- sync
- echo 3 > /proc/sys/vm/drop_caches
- f2fs_io test_lookup_perf /mnt/f2fs/dir
Output:
Measure readdir performance
Measure stat performance
Operation: total_files, total_time_s, throughput_files_per_sec
readdir: 50000, 1.7781, 28120.08
stat: 50000, 2.1665, 23079.19
- f2fs_io test_lookup_perf -v /mnt/f2fs/dir 50000
Output:
inode file type d_reclen d_off d_name
6176 directory 24 1 .
3 directory 24 2 ..
6276 regular 32 4 test_file_0
6285 regular 32 6 test_file_1
6291 regular 32 8 test_file_2
6295 regular 32 10 test_file_3
....
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
1 file changed
