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| author | Travis Rhoden <trhoden@gmail.com> | 2013-01-18 22:26:07 -0500 |
|---|---|---|
| committer | Travis Rhoden <trhoden@gmail.com> | 2013-01-18 22:26:07 -0500 |
| commit | 48308954cbbec59a4671b20a685a920b8db2ca58 (patch) | |
| tree | ada8158721d5b7b0877c16fe208d6b36285e0b9d | |
| parent | 0cb760f31b0cb26f022fe8b9341e41cd5351afac (diff) | |
| download | ceph-48308954cbbec59a4671b20a685a920b8db2ca58.tar.gz | |
Clarify journal size based on filestore max sync
The docs had the recommended journal size based on the option
"filestore min sync interval" when it should have been
"filestore max sync interval".
While in there, fix a couple of typos -- multiple when it should
be multiply, and a missing word. Change "Should at least twice"
to "Should be at least twice..."
Signed-off-by: Travis Rhoden <trhoden@gmail.com>
| -rw-r--r-- | doc/rados/configuration/ceph-conf.rst | 4 | ||||
| -rw-r--r-- | doc/rados/configuration/osd-config-ref.rst | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/doc/rados/configuration/ceph-conf.rst b/doc/rados/configuration/ceph-conf.rst index f861ce8cd80..ca03a8520a4 100644 --- a/doc/rados/configuration/ceph-conf.rst +++ b/doc/rados/configuration/ceph-conf.rst @@ -386,10 +386,10 @@ journal data (e.g., a solid state drive delivers high performance journaling). Ceph's default ``osd journal size`` is 0, so you will need to set this in your ``ceph.conf`` file. A journal size should find the product of the ``filestore -min sync interval`` and the expected throughput, and multiple the product by +max sync interval`` and the expected throughput, and multiply the product by two (2):: - osd journal size = {2 * (expected throughput * filestore min sync interval)} + osd journal size = {2 * (expected throughput * filestore max sync interval)} The expected throughput number should include the expected disk throughput (i.e., sustained data transfer rate), and network throughput. For example, diff --git a/doc/rados/configuration/osd-config-ref.rst b/doc/rados/configuration/osd-config-ref.rst index ceba2042390..97759652202 100644 --- a/doc/rados/configuration/osd-config-ref.rst +++ b/doc/rados/configuration/osd-config-ref.rst @@ -30,7 +30,7 @@ :Description: The size of the journal in megabytes. If this is 0, and the journal is a block device, the entire block device is used. Since v0.54, this is ignored if the journal is a block device, and the entire block device is used. :Type: 32-bit Integer :Default: ``1024`` -:Recommended: Begin with 1GB. Should at least twice the product of the expected speed multiplied by ``filestore min sync interval``. +:Recommended: Begin with 1GB. Should be at least twice the product of the expected speed multiplied by ``filestore max sync interval``. ``osd max write size`` |