| Demonstrations of vfscount, the Linux eBPF/bcc version. |
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| This counts VFS calls, by tracing all kernel functions beginning with "vfs_": |
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| # ./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 |
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| This can be useful for workload characterization, to see what types of |
| operations are in use. |
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| You can edit the script to customize what kernel functions are matched. |
