Akiko Hoshikawa

Akiko Hoshikawa is a Senior Technical Staff Member with the IBM Silicon Valley Lab, where she leads the performance engineers for Db2 for z/OS development. She is responsible of driving performance initiated development in each Db2 releases working closely with Db2 developers. She has been working in the Db2 for z/OS performance team since 1997, executing performance evaluations of new Db2 releases and supporting numerous customers performance tuning and vendor benchmarks.

Lightning Fast I/O via zHyperLink and Db2 for z/OS Exploitation – Part 2

Aug 22, 2019 | Performance

Last week we ended with Db2 Performance of zHyperLink Read. Now let’s look at the CPU cost of zHyperLink read. As explained last week, I/O operation is now synchronous to CPU with zHyperLink and SQL processing spins while waiting for the I/O to complete. At the same...

Lightning Fast I/O via zHyperLink and Db2 for z/OS Exploitation

Aug 15, 2019 | Performance

As the size of database and the volume of transactions increase, many of Db2 transactions tend to spend significant amount of wait time in database read and log write I/Os. zHyperLink is introduced to help reduce b2 transaction latency. zHyperLink is a new short...

Db2 12 In-Memory Feature: Fast Index Traversal

Feb 13, 2019 | DB2

Db2 12 is classified as an in-memory data base by Gartner. It is not just a simple in-memory data base but a very smart one. In this paper, we explain one of the most innovative in memory optimizations in Db2 12. Why In-Memory Optimization in Index? The...