nuked my bad mysql eval

This commit is contained in:
Sears Russell 2005-03-26 02:24:16 +00:00
parent c8c7abf16c
commit 7f1c8cd01f

View file

@ -1853,19 +1853,6 @@ Such an optimization would be difficult to achieve with Berkeley DB
since the only diff-based mechanism it supports requires changes to
span contiguous regions of a record, which is not necessarily the case for arbitrary
object updates.
In a database server context, this type of optimization can be
supported if the fields of the object are broken into database table
columns. and a SQL update query only modifies a subset of the fields.
However, as we have seen in some preliminary evaluation,
the overheads associated with a SQL based interface outweigh the
advantages of this optimization. To avoid RPC costs, we ran the
benchmark using libmysqld, which bypasses RPC costs by linking MySQL
into an application binary. We used an InnoDB table, which seemed
to perform better than tables backed by Berkeley DB. Still, MySQL
was significantly slower then native Berkeley DB. If we do not link
the MySQL server into the application binary then the cost of local
interprocess communication dominates the test, causing the benchmark to
take too long to be reported here.
%% \footnote{It is unclear if
%% this optimization would outweigh the overheads associated with an SQL