SPECweb96 Result

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                                                        ||
 IBM : RS/6000 43P-260                                  ||   4597   SPECweb96
 IBM : IBM HTTP Server 1.3.6                            ||
                                                        ||
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   Throughput   Response
     ops/sec      msec
       460         1.5
       920         1.5
      1380         1.5
      1840         1.6
      2300         1.6
      2760         1.7
      3220         1.8
      3680         1.9
      4140         2.1
      4597         2.5

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                          General Availability Dates

 Hardware            Oct-98
 Operating System    Sep-99
 HTTP Software       Aug-99

                               System Hardware

 Vendor              IBM
 Model               RS/6000 43P-260
 Processor           200 MHz POWER3
 # of Processors     2
 Primary Cache       32KBI+64KBD on chip
 Secondary Cache     4MB(I+D) off chip
 Other Cache         None
 Memory              4096 MB
 Disk Controllers    Wide/Fast-20 SCSI I/O Controller
 Disk Subsystem      3 9.1GB 16 Bits SCSI Disk Drive
 Other Hardware      Alteon ACEswitch 180 Ethernet switch

                               System Software

 Operating System    AIX 4.3.3
 Other Software      None
 File System Type    JFS

                                HTTP Software

 Vendor              IBM
 HTTP Software       IBM HTTP Server 1.3.6
 # of "threads"      2
 Server Cache        FRCA(Integrated)
 Log Mode            Common Log Format

                                   Network

 # of Controllers    2
 Network Controller  Gigabit Ethernet-SX PCI Adapter
 # of Nets           2
 Type of Nets        Jumbo Frame Gigabit
 Network Speed       1 Gigabit/sec
 MSL (sec)           30
 Time-Wait (sec)     60

                               Load Generators

 # of Generators     6
 # of Processes Each 12
 Model               6 RS/6000 43P-260
 Processor           200 MHz POWER3
 # of Processors     2
 Memory              1024 MB
 Network Controller  Gigabit Ethernet-SX PCI Adapter
 Operating System    AIX 4.3.2
 Compiler            IBM Cset++ Version 3.1.3

                            Benchmark Configuration

 Max Requested Load  4600
 Max Fileset Size    1484

                                 Test Sponsor

 Tested By           IBM Austin
 License Number      11
 Test Date           Aug-99

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                                Network Notes

<> Jumbo Frame Gigabit MTU=9000
<> 3 clients per network

                                 Other Notes

<> server no (network option) tuning:
<> no -o sb_max=262144 (max buffer size allowed for a socket, default=65536)
<> no -o somaxconn=16384 (max listen backlog, default=1024)
<> no -o nbc_max_cache=100000 (max file size for the network buffer cache, default=131072)
<> no -o nbc_pseg=20000 (number of entry allowed in private segment, default=0)
<> no -o tcp_sendspace=28000 (default socket send buffer size, default=16384)
<> no -o tcp_recvspace=28000 (default socket receive buffer size, default=16384)
<> no -o tcp_timewait=5 (ensure that TIME_WAIT is at least 60 seconds, default=1)
<> Processor affinity - bind 2 Ethernet interrupts to 2 CPU's ( one intr to each CPU )
<> 3 disks (one for OS, one for SPECweb96 file_set, and one for web server log )
<> client no (network option) tuning:)
<> no -o tcp_sendspace=28000 (default socket send buffer size, default=16384)
<> no -o tcp_recvspace=28000 (default socket receive buffer size, default=16384)
<> no -o delayack=3 (delay ack for connection setup and shutdown, default=0)
<> no -o delayackports={80} (delay ack ports, default={} )
<> Altermate HTTP/HT.c used. Repeated client-side calls'gethostbyname()' ommitted, as approved by SPEC. No change in measured server performance but reduction in client load. )

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