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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
commit | 19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch) | |
tree | 42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/seastar/doc/io-properties-file.md | |
parent | Initial commit. (diff) | |
download | ceph-19fcec84d8d7d21e796c7624e521b60d28ee21ed.tar.xz ceph-19fcec84d8d7d21e796c7624e521b60d28ee21ed.zip |
Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/seastar/doc/io-properties-file.md')
-rw-r--r-- | src/seastar/doc/io-properties-file.md | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/seastar/doc/io-properties-file.md b/src/seastar/doc/io-properties-file.md new file mode 100644 index 000000000..2af0b5bc2 --- /dev/null +++ b/src/seastar/doc/io-properties-file.md @@ -0,0 +1,34 @@ +# Specifying the I/O properties of a system + +The I/O properties of a system can be specified as a YAML string, by +using the option --io-properties, or as a YAML file with the option +--io-properties-file. + +The expected format starts with a map of sections at the top level. +Currently only `disks` is supported. + +## The disks section + +Inside the `disks` section, the user can specify a list of mount points. + +For each mount point, 4 properties have to be specified (none are +optional): + +* `read_iops`: read IOPS speed of the device +* `read_bandwidth`: read bandwidth speed of the device +* `write_iops`: write IOPS speed of the device +* `write_bandwidth`: write bandwidth speed of the device + +Those quantities can be specified in raw form, or followed with a +suffix (k, M, G, or T). + +Example: + +``` +disks: + - mountpoint: /var/lib/some_seastar_app + read_iops: 95000 + read_bandwidth: 545M + write_iops: 85000 + write_bandwidth: 510M +``` |