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fsmark - benchmark for simulating synchronous write workloads…  more info»


FS_MARK(1)                  User Commands                 FS_MARK(1)

       fs_mark - Benchmark synchronous/async file creation

       fs_mark [OPTIONS] -d DIRECTORY [-d DIRECTORY ...]

       fs_mark  is meant to give some low level bashing to file sys‐
       tems. The write pattern that it concentrates  on  is  heavily
       synchronous IO across multiple directories, drives, etc.

       -h     Print usage and exit.

       -k     Keep files after each iteration.

       -F     Run until filesystem is full.

              Method to be used for synchronizing changes to disk:

              0: No Sync

              1: fsyncBeforeClose

              2: sync/1_fsync

              3: PostReverseFsync

              4: syncPostReverseFsync

              5: PostFsync

              6: syncPostFsync

              Use number subdirectories.

              Use  number  files in each subdirectory in round robin

              Use directory. Can be specified multiple times.

              Log to logfile.

              Repeat the benchmark number of iterations.

              Use number of files per iteration.

              Use number of total bytes file names.

              Use number of random bytes in file names.

              Use number of bytes as size of each file.

              Use number of threads.

              Use number (of bytes per write() syscall.

       fs_mark was written by Ric Wheeler <>.

       This  manual  page  was   written   by   Martin   Steigerwald
       <>,  for  the  Debian project (but may be used by

fs_mark: Benchmark synchronouMarchn2012le creation        FS_MARK(1)
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