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IBM STG — pSeries® Solutions Enablement group has completed an R6iNotes workload benchmark with the IBM System p5™ 550Q server with eight 1.5GHz IBM POWER5+™ cores running IBM Lotus® Domino®7 and the new DWA7 template on the IBM AIX 5L™ V5.3 operating system. The results below demonstrate an outstanding pSeries achievement in price/performance and high workload capacity with 24,000 Lotus Domino Web Access NotesBench users. This audit result demonstrates the performance capability of IBM POWER5™ technology with an excellent response time and a high number of NotesBench users per processor core1.
These results for the p5-550Q server are based on the NotesBench R6iNotes workload which was run on a dedicated LPAR system configuration. The R6iNotes workload ran for six hours without errors with an average response time of 932 ms.
The p5-550Q server was configured with eight 1.5GHz POWER5 processors. The POWER5+ architecture places four processors cores on a single chip module (Quad-Core Module -QCM). There are two QCMs in this system configuration. IBM System p5 identifies processors as the number of cores per system. Thus this 8-way system contains two 4-core chips for a total of eight cores. Since System p5 considers each core a processor, the system is described as an 8-way with eight processors.
To support these processors the system was configured with 32GB of memory, a RAID10 SCSI disk sub-system using seventy two (72) 10,000 rpm 73.4GB disks and two PCI-X 10/100/1000 Mbps integrated Ethernet ports, plus two PCI 10/100 Ethernet cards. This configuration supported four Lotus Domino partitions running the NotesBench R6iNotes workload of 24,000 active users. All users databases were using the new Lotus Domino7 DWA7 template. All partitions shared a common Lotus Domino Directory (Name and Address Book or NAB) which contained 48,000 person documents.
In addition to the p5-550Q system under test (SUT), the benchmarked configuration included 24 client (child) driver systems for the NotesBench R6iNotes workload and one parent system. All systems were connected using the TCP/IP network protocol.
The performance measurements were completed by September 22,2005. All aspects of the performance measurements including setup, execution, and results analysis and reporting were performed by the IBM STG - Solutions Enablement team in Austin, Texas. The benchmark results were audited by KMDS Technical Associates, Inc., in September, 2005. NotesBench provides an objective method for evaluating the performance of different platforms running Lotus Domino. NotesBench generates a transactions-per-minute (tpm) throughput metric, called a NotesMark, for each test, along with a value for the maximum capacity (number of NotesBench users) supported, and the average response time.
1 Results current as of September, 2005. Please refer to the NotesBench consortium at http://notesbench.org for a complete list of all Lotus Domino NotesBench reports.
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