56 lines
2.2 KiB
Plaintext
56 lines
2.2 KiB
Plaintext
Demonstrations of vfscount, the Linux eBPF/bcc version.
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This counts VFS calls during time, by tracing all kernel functions beginning
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with "vfs_", By defaults, the time is 99999999s
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# ./vfscount
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Tracing... Ctrl-C to end.
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^C
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ADDR FUNC COUNT
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ffffffff811f3c01 vfs_create 1
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ffffffff8120be71 vfs_getxattr 2
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ffffffff811f5f61 vfs_unlink 2
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ffffffff81236ca1 vfs_lock_file 6
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ffffffff81218fb1 vfs_fsync_range 6
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ffffffff811ecaf1 vfs_fstat 319
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ffffffff811e6f01 vfs_open 475
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ffffffff811ecb51 vfs_fstatat 488
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ffffffff811ecac1 vfs_getattr 704
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ffffffff811ec9f1 vfs_getattr_nosec 704
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ffffffff811e80a1 vfs_write 1764
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ffffffff811e7f71 vfs_read 2283
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Here we are using an output in 10 seconds, and printing 10 seconds summaries
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# ./vfscount 10
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Tracing... Ctrl-C to end.
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ADDR FUNC COUNT
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ffffffffa1283671 vfs_rename 1
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ffffffffa129f471 vfs_setxattr 1
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ffffffffa12831c1 vfs_mkdir 1
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ffffffffa1282a51 vfs_rmdir 10
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ffffffffa1283f31 vfs_unlink 28
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ffffffffa1273e61 vfs_writev 53
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ffffffffa12ae061 vfs_statfs 55
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ffffffffa129e971 vfs_getxattr 138
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ffffffffa1288561 vfs_readlink 157
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ffffffffa12d6311 vfs_lock_file 223
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ffffffffa1274da1 vfs_write 537
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ffffffffa12798f1 vfs_statx_fd 2337
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ffffffffa1279971 vfs_statx 3064
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ffffffffa1271ba1 vfs_open 4334
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ffffffffa12798b1 vfs_getattr 4823
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ffffffffa1279821 vfs_getattr_nosec 4823
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ffffffffa1274af1 vfs_read 9060
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This can be useful for workload characterization, to see what types of
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operations are in use.
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You can edit the script to customize what kernel functions are matched.
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Full usage:
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# ./vfsstat -h
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USAGE: ./vfsstat [time]
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