5. 影响性能的原因应用服务器
Inefficient use of DB connections
Excessive use of DB queries
Inefficient caching controlling the number of object instances
数据库服务器
Locking
Long queries
Indexes not properly defined
Web服务器
Scripting languages are server intensive
Excessive use of HTTPS
Hardware limitations (memory and CPU)
网络架构
Badly configured load balancers
Insufficient network bandwidth
Configuration of network devices
ISP peeringInside
FirewallOutside
Firewall
9. 负载测试流程5. Analyze data andpinpoints bottlenecks
1. Record user interactions
against client application
into test script2. Turn scripts into Virtual Users by adding test data and user behavior3. Run Virtual Users to generate load4. Monitor system performance during load testThe Load Testing Process
10. 支持最普遍的企业级环境Web ServerApp. ServerDatabaseInternet/IntranetClientsWeb
HTTP(S)
WAP
i-mode
COM
CORBA
LDAP
Winsock
RMI
FTP
POP3
SMTP
Real Player
MS Media
V-XMLDatabases
Oracle
MS SQLServer
DB2
Sybase
Informix
ODBCMiddleware
Protocols
CORBA
COM
TUXEDO
Jolt
MQSeriesPlatforms
NT, 2000
Sun
HP
IBM
LinuxERP/CRM
Oracle Apps.
SAP
Siebel
PeopleSoftLegacy
3270
5250
VT100
11. 性能监视器 隔离瓶颈Web ServerApp. ServerDatabaseInternet/IntranetClientsWeb App. Server Monitors:
BroadVision
Allaire ColdFusion
SilverStream
BEA WebLogic Server
IBM WebSphere
MS ASPWeb Server Monitors:
MS IIS
iPlanet (NES)
ApacheO.S Monitor:
NT, 2000
Unix
LinuxDatabase Monitors:
Oracle
SQLServer
DB2
SybaseNetwork Monitors:
SNMP
Network DelayMiddleware Monitors:
TUXEDO
EJBAriba
ATG Dynamo
Oracle 9iASStreaming Monitors:
Real Server
MS Media ServerFirewall Monitors:
CheckPoint
13. ActiveTestActiveTest是一个使用LoadRunner的基于主机和web的测试服务,能够进行高扩展的web站点压力测试London
Load Farm Santa Clara Load Farm
San Jose
Load Farm ActiveTest Command CenterCustomer
Web ApplicationLoad Farms
Worldwide Locations