SPECweb99 Result

Dell:	PowerEdge 750
Red Hat:	Red Hat Content Accelerator 3.2

SPECweb99 = 3400

Performance

Iteration

Conforming Simultaneous Connections

1	3297
2	3400
3	3400
Median	3400

Configuration

Availability Dates
All Hardware	Mar-2004
HTTP Software	Jan-2004
Operating System	Jan-2004
Supplemental System	Jan-2004

Hardware

Vendor Dell

Model PowerEdge 750

Processor 3.2GHz Intel Pentium 4 (800MHz bus)

# Processors 1 core, 1 chip, 1 core/chip (Hyper-Threading enabled)

Primary Cache 12KBI+8KBD on chip

Secondary Cache 512KB on chip

Other Cache None

Memory 4 GB DDR400 (4x1GB)

Disk Subsystem 2 120GB 7200 rpm SATA disks

Disk Controllers Dell CERC SATA 1.5/6ch

Other Hardware 2 Dell PowerConnect 5012

Software

Operating System Red Hat Enterprise Linux AS 3

File System ext2

Other Software Update 1

HTTP Software

Vendor Red Hat

HTTP Software Red Hat Content Accelerator 3.2

API RHCA API

Server Cache None

Log Mode Binary CLF

Test Sponsor
Test Date	Feb-2004
Tested By	Dell
SPEC License	55

Network

# of Controllers 1

Network Controllers Intel PRO/1000 MT Dual Port Server Adapter

# of Nets 2

Type of Nets Gigabit Ethernet

Network Speed 1 Gb/s

MSL (sec) 30 (Non RFC1122)

Time-Wait (sec) 60 (Non RFC1122)

MTU 1500

Clients

# of Clients 8

Model Dell PowerEdge 1550

Processor 1.4GHz Pentium III

# of Processors 2

Memory 256MB

Network Controller Onboard Intel 82544EI

Operating System Microsoft Windows XP

Compiler Microsoft Visual C++ 6.0

Benchmark Configuration

Requested Connections 3400

Fileset Size (MB) 10999.52

Notes

SUT Notes

1 partition on first disk for OS
File set, logs on 2-disk SW RAID0 stripe
Hyper-Threading enabled

Operating System Notes

ulimit -n 10000, sets number of open files, default 1024
One NIC IRQ bound per logical CPU; aacraid (file set) IRQ bound to CPU 1, default 0
Each NIC's TX queue length set to 20000 via ifconfig, default 100
File systems mounted with "noatime,nodiratime", no inode access time updating
net.ipv4.nonlocal_bind = 1, allows processes to bind to non-local IP adresses
net.ipv4.tcp_timestamps = 0, turns TCP timestamp support off, default on
net.ipv4.tcp_max_tw_buckets = 1500000, sets TCP time-wait buckets pool size, default 180000
net.ipv4.tcp_rmem = 30000000 30000000 30000000, sets min/default/max TCP read buffer, default 4096 87380 174760
net.ipv4.tcp_wmem = 30000000 30000000 30000000, sets min/pressure/max TCP write buffer, default 4096 16384 131072
net.ipv4.tcp_mem = 30000000 30000000 30000000, sets min/pressure/max TCP buffer space, default 31744 32256 32768
net.ipv4.tcp_window_scaling = 0, turn TCP window scaling support off, default on
net.core.hot_list_length = 5000, maximum number of skb-heads to be cached, default 128
net.core.optmem_max = 10000000, maximum amount of option memory buffers, default 10240
net.core.rmem_max = 10000000, maximum receive socket buffer size, default 131071
net.core.wmem_max = 10000000, maximum send socket buffer size, default 131071
net.core.rmem_default = 10000000, default receive socket buffer size, default 65535
net.core.wmem_default = 10000000, default send socket buffer size, default 65535
net.core.netdev_max_backlog = 300000, number of unprocessed input packets before kernel starts dropping them, default 300
sys.vm.dcache_priority = 1000000, lowers # entries zapped from dcache each iteration, default 0
Kernel parameters:
idle=poll, idle threads poll reschedule flag, default is to use HLT instruction

HTTP Software Notes

One network bound per TUX thread
net.tux.logging = 1, turns on logging of requests, default 0
net.tux.cgiroot = /, cgi root check, default /var/www/tux/cgiroot/
net.tux.cgi_uid = 99, uid 'nobody' for cgi scripts; default -1
net.tux.cgi_gid = 99, gid 'nobody' for cgi scripts; default -1
net.tux.max_backlog = 3000, maximum per-listening-socket TCP backlog size, default 2048
net.tux.generate_etags = 0, don't generate ETag header, default 1
net.tux.generate_last_mod = 0, don't generate Last-Modified header, default 0
net.tux.noid = 1, suppress the Server id string, default 0
net.tux.max_connect = 50000, maximum # simultaneous connections, default 1000
net.tux.cgi_inherit_cpu = 1, CGIs inherit CPU binding, default 0

Client Notes

Registry tunes:
- Tcpip\Parameters\MaxUserPort=0xfffe, sets maximum open ports to 65534
- Tcpip\Parameters\TcpTimedWaitDelay=60, sets TIME_WAIT parameter to 60 seconds (non-RFC 1122), default 240
- Tcpip\Parameters\MaxFreeTWTcbs=100000, sets maximum number of TIME_WAIT tcbs to 100,000
- Tcpip\Parameters\TcpWindowSize=65535, sets TCP send\receive window size, default 8192

Other Notes

Tuning Disclosure: See above.
Dynamic API, flag descriptions: Dell-20031027-RHCA.tgz
Kernel config: Dell-20040302-PE750-config.txt

Test Run Details

**Test results for each iteration (median is shaded)**
Iteration	Conforming Connections	Percent Conform	Throughput ops/sec	Response msec	ops/sec/ loadgen	kbit/ sec
1	3297	97.0%	9557.6	355.1	2.81	335.5
2	3400	100.0%	9620.0	353.7	2.83	336.8
3	3400	100.0%	9641.1	352.9	2.84	337.6

Tue Mar 23 14:49:26 2004

First published at SPEC.org on 16-Mar-2004