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| author | Samuel Just <sam.just@inktank.com> | 2013-05-10 12:26:32 -0700 |
|---|---|---|
| committer | Samuel Just <sam.just@inktank.com> | 2013-05-21 12:51:20 -0700 |
| commit | 17a6e7faa7a512b803f228e26c101ccb45306f7a (patch) | |
| tree | 560e4b9b36b89af51b845159a1723a0fed16540d | |
| parent | 12eff5d9ff46617f0067a1c57e2b61fc43afb3bb (diff) | |
| download | ceph-17a6e7faa7a512b803f228e26c101ccb45306f7a.tar.gz | |
doc/dev/osd_internals: add some info about throttles
Signed-off-by: Samuel Just <sam.just@inktank.com>
| -rw-r--r-- | doc/dev/osd_internals/osd_throttles.rst | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/doc/dev/osd_internals/osd_throttles.rst b/doc/dev/osd_internals/osd_throttles.rst new file mode 100644 index 00000000000..4fa3044f986 --- /dev/null +++ b/doc/dev/osd_internals/osd_throttles.rst @@ -0,0 +1,21 @@ + Messenger throttle (number and size) + |-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| + FileStore op_queue throttle (number and size) + |--------------------------------------------------------| + WBThrottle + |---------------------------------------------------------------------------------------------------------| + Journal (size) + |-----------------------------------------------------------------------------------------------------------------------------------------------------------------| + |----------------------------------------------------------------------------------------------------> flushed ----------------> synced + | +Op: Read Header --DispatchQ--> OSD::_dispatch --OpWQ--> PG::do_request --journalq--> Journal --FileStore::OpWQ--> Apply Thread --Finisher--> op_applied -------------------------------------------------------------> Complete + | | +SubOp: --Messenger--> ReadHeader --DispatchQ--> OSD::_dispatch --OpWQ--> PG::do_request --journalq--> Journal --FileStore::OpWQ--> Apply Thread --Finisher--> sub_op_applied - + | + |-----------------------------> flushed ----------------> synced + |------------------------------------------------------------------------------------------| + Journal (size) + |---------------------------------| + WBThrottle + |-----------------------------------------------------| + FileStore op_queue throttle (number and size) |