e7a60d01b2
Summary: WriteController had a number of issues: * It could introduce a delay of 1ms even if the write rate never exceeded the configured delayed_write_rate. * The DB-wide delayed_write_rate could be exceeded in a number of ways with multiple column families: * Wiping all pending delay "debts" when another column family joins the delay with GetDelayToken(). * Resetting last_refill_time_ to (now + sleep amount) means each column family can write with delayed_write_rate for large writes. * Updating bytes_left_ for a partial refill without updating last_refill_time_ would essentially give out random bonuses, especially to medium-sized writes. Now the code is much simpler, with these issues fixed. See comments in the new code and new (replacement) tests. Pull Request resolved: https://github.com/facebook/rocksdb/pull/8064 Test Plan: new tests, better than old tests Reviewed By: mrambacher Differential Revision: D27064936 Pulled By: pdillinger fbshipit-source-id: 497c23fe6819340b8f3d440bd634d8a2bc47323f |
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| .. | ||
| db_impl_compaction_flush.cc | ||
| db_impl_debug.cc | ||
| db_impl_experimental.cc | ||
| db_impl_files.cc | ||
| db_impl_open.cc | ||
| db_impl_readonly.cc | ||
| db_impl_readonly.h | ||
| db_impl_secondary.cc | ||
| db_impl_secondary.h | ||
| db_impl_write.cc | ||
| db_impl.cc | ||
| db_impl.h | ||