Oracle gratefully acknowledges the following contributions from Google, Inc. to improve InnoDB performance:
Replacing InnoDB's use of Pthreads mutexes with calls to GCC atomic builtins, as discussed in Section 126.96.36.199, “Faster Locking for Improved Scalability”. This change means that InnoDB mutex and and rw-lock operations take less CPU time, and improves throughput on those platforms where the atomic operations are available.
Controlling master thread
I/O rate, as
Section 188.8.131.52, “Controlling the Master Thread I/O Rate”. The
master thread in InnoDB is a thread that performs various
tasks in the background. Historically, InnoDB has used a hard
coded value as the total
I/O capacity of
the server. With this change, user can control the number of
I/O operations that can be performed per
second based on their own workload.
Changes from the Google contributions were incorporated in the
following source code files:
These contributions are incorporated subject to the conditions
contained in the file
COPYING.Google, which are
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