HSG-WP08007 PX2832002-00 Rev. D 03/13 4
WHITE PAPER
To make the benchmarks relevant to today’s businesses, QLogic selected
the market-leading Oracle Relational Database Management System
(RDBMS) running on Microsoft
®
Windows Server™ 2008 R2. RDBMS on
Windows is a very popular, highly scalable enterprise configuration in wide
production use for both workloads described in the previous paragraphs.
The tool used for predicting the performance of the Oracle database under
load was Orion from Oracle.
Testing performance. To test and compare the I/O performance, QLogic
used a Texas Memory Systems RamSan
®
-325 solid-state storage
subsystem as the target. Solid-state storage dramatically reduces the
latency that comes from using disk-based storage. This latency reduction
allows for measuring the true capability of the adapter DUT.
Test Setup
The test setup (Figure 3) consisted of the latest 8Gb adapters from QLogic
and Emulex, running on current commercially available drivers and installed
in a Intel Nahalem Quad Core (dual socket) server running the Windows
Server 2008 R2 operating system (OS). The Intel Nahalem server was
connected to a RamSan-325 (with 32GB total capacity) through a QLogic
5000 Series Stackable Fibre Channel Switch. Using a solid-state disk
removes the latency introduced by a slower disk drive, and provides the
performance benchmark expected from next-generation storage arrays.
Eight LUNs were created on the RamSan, and each was visible through
four different ports. The switch was configured with one initiator to the
QLogic 5000 Series Stackable Fibre Channel Switch in a zone with four
target RamSan ports.
Figure 3. 8Gb Test Setup
The tests were performed using the latest commercially available hardware,
software, and drivers. All measurements were made with default settings of
the adapters from both companies.
Test Procedure
The tests were executed on the configuration in Figure 3 as follows:
1. A QLogic 8Gb single-channel PCI Express
®
to Fibre Channel Adapter
(QLE2560) was installed on the test server using the appropriate
miniport driver.
2. Eight LUNs were created and mapped to four target ports.
3. The Windows device manager was used to verify that the LUNs were
visible. Each LUN was then formatted and assigned a drive letter that
could be used by the Orion tool.
4. The Orion commands were executed to simulate OLTP and OLAP
workloads.
5. These steps were repeated for the Emulex 8Gb single-channel PCI
Express to Fibre Channel Adapter (LPe12000).
Test Results
The performance of the QLogic adapter and Emulex adapter were tested
and measured based on critical parameters as part of OLTP and OLAP
application testing. The performance was measured against an increasing
load on the adapters determined by the number of outstanding I/O requests.
TP Workloads. OLTP is the most common workload in the enterprise, so
it provides a good indication of the adapter’s scalability in a production
setting. Figure 4 shows an up to 106 percent performance advantage of
QLogic over Emulex in overall IOPS in the OLTP application environment.
Figure 4. OLTP Application Performance
0
20000
40000
60000
80000
100000
120000
140000
1 2 3 4 8 12 16 20 24 28 32
IOPS (Transacons/Second)
Outstanding I/Os (Increasing Workload)
Oracle OLTP Transaconal Performance
QLE2560
Emulex LPe 12000
(5 pages)
(4 pages)
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