QLogic 10000 Series Adapter Provides Application Benefits Through I_O Caching - Manual (Page 3)

SN0430935-00 Rev. D 04/14 3
White Paper QLogic 10000 Series Adapter Provides
Application Benefits Through I/O Caching
Figure 2: Single-Server Query TPS
MULTISERVER (4) QLOGIC 10000 SERIES ADAPTER DELIVERS
22 × PERFORMANCE
The four-server test setup shown in Figure 3 was configured with four Intel
Xeon Servers connected to an HP EVA storage array through four QLogic
10000 Series Adapters and a QLogic 5800V/5802V Fibre Channel Switch.
TPC workload queries were executed in parallel with cache levels varying
in size from 0 to 100 percent of the SQL database size. The simultaneous
runs emulate a clustered application scenario, where numerous servers
are running I/O traffic to a single array.
Figure 3. Multiple Server Database Query Setup
Figure 4 shows that in a four-server configuration, there is clearly a
very large aggregated TPS acceleration that is achieved with relatively
modest cache sizing. The range indicated by “2A” shows a significant
application performance increase with small configurations: 3.5 × TPS at
just 20 percent cache sized. The range indicated by “2B” shows that a
large application acceleration performance is available with modest cache
configurations and multiple servers: 22 × TPS at 30 percent cache size.