I am still playing around with load/stress testing my FDS install. I am using
slamd to run the tests, and I am running the basic load, and the basic search
tests against my test boxes, The slamd client and the FDS server are on
identical hardware running RHEL4 with 2G memory, and 2 Intel Xeon 3.6GHz
processors. The issue I am seeing is that I am getting "cannot connect to the
ldap server" errors once I push the "threads per client" past 2400. My
question is am I hitting a limit on the OS (max tcp connections)? Or a FDS
limit? My assumption was that given appropriate hardware, and proper
configuration, I could expect FDS to handle more than 2400 concurrent
connections. Any insights as to what I might be missing would be greatly
appreciated.
Thanks
FDS Config:
Performance settings are:
Time Limit: 3600
Max file descriptors: 65535
Database Link Connection Management Settings
Max TCP connections: 6
Bind Timeout: 15
Max binds per conn: 20
Timeout before Abandon: 1
Max LDAP Conn: 40
Max bind retries: 6
Max operations/conn: 2
Database Settings:
Max Cache Size: 66060288
Mem Avail for cache: 105622733
Note: uidnumber is indexed
SLAMD test parameters:
Scheduled Start Time 06/05/2007 13:10:46
Scheduled Stop Time (not specified)
Scheduled Duration 300 seconds
Number of Clients 1
Wait for Available Clients true
Monitor Clients if Available false
Threads per Client 2400
Thread Startup Delay 0 milliseconds
Statistics Collection Interval 60 seconds
Job Dependencies (none specified)
Notify on Completion (none specified)
Parameter Information
Directory Server Host app2
Directory Server Port 389
Bind DN (not specified)
Bind Password (not specified)
Search Base dc=calpers,dc=ca,dc=gov
Search Scope Whole Subtree
Search Filter uidnumber=50000
Filter File URL (not specified)
Attributes to Return uidnumber
Warm Up Time 0
Cool Down Time 0
Search Size Limit 0
Search Time Limit 0
Time Between Requests (ms) 0
Use SSL false
Blindly Trust Any Certificate true
SSL Key Store (not specified)
SSL Key Store Password (not specified)
SSL Trust Store (not specified)
SSL Trust Store Password (not specified)
Number of Iterations -1
Always Disconnect false
Follow Referrals false
Cary Anderson, Systems Software Specialist
UNIX/Linux Services
Information Technology Services Branch
Technology Services & Support Division / Data Center Section
System Software & Storage Infrastructure
fCalPERS
Phone: (916) 795-2588
Fax: (916) 795-2424
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