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vfscount_example.txt
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vfscount_example.txt
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Demonstrations of vfscount, the Linux eBPF/bcc version.
This counts VFS calls during time, by tracing all kernel functions beginning
with "vfs_", By defaults, the time is 99999999s
# ./vfscount
Tracing... Ctrl-C to end.
^C
ADDR FUNC COUNT
ffffffff811f3c01 vfs_create 1
ffffffff8120be71 vfs_getxattr 2
ffffffff811f5f61 vfs_unlink 2
ffffffff81236ca1 vfs_lock_file 6
ffffffff81218fb1 vfs_fsync_range 6
ffffffff811ecaf1 vfs_fstat 319
ffffffff811e6f01 vfs_open 475
ffffffff811ecb51 vfs_fstatat 488
ffffffff811ecac1 vfs_getattr 704
ffffffff811ec9f1 vfs_getattr_nosec 704
ffffffff811e80a1 vfs_write 1764
ffffffff811e7f71 vfs_read 2283
Here we are using an output in 10 seconds, and printing 10 seconds summaries
# ./vfscount 10
Tracing... Ctrl-C to end.
ADDR FUNC COUNT
ffffffffa1283671 vfs_rename 1
ffffffffa129f471 vfs_setxattr 1
ffffffffa12831c1 vfs_mkdir 1
ffffffffa1282a51 vfs_rmdir 10
ffffffffa1283f31 vfs_unlink 28
ffffffffa1273e61 vfs_writev 53
ffffffffa12ae061 vfs_statfs 55
ffffffffa129e971 vfs_getxattr 138
ffffffffa1288561 vfs_readlink 157
ffffffffa12d6311 vfs_lock_file 223
ffffffffa1274da1 vfs_write 537
ffffffffa12798f1 vfs_statx_fd 2337
ffffffffa1279971 vfs_statx 3064
ffffffffa1271ba1 vfs_open 4334