On Tue, Nov 10, 2009 at 5:35 PM, Alan DeKok
<aland@deployingradius.com> wrote:
Dinh Pham Cong wrote:
> start_servers = 1024
> max_servers = 3000
> max_spare_servers = 3000
That's a little high.
I saw that when 1000 client was created at the same time and send requests to Radius server concurrently there were about 2000+ radiusd threads were created too. I thought that 1000 concurrent client could be translated to more than 1000 packets/s.
I have done another load tests with smaller concurrent clients: 100, 200, 500. However, Radiusd can not handle more than 1000 request/s (total requests/total time used to sent all the requests). For example Radiusd can handle 20 000 request in more than 20 seconds, 40 000 requests in more than 43 seconds.
> My sql.conf
>
> # number of sql connections to make to server
> num_sql_socks = 1000
Remember: 1000 packets/s does *not* mean 1000 threads or 1000 SQL
sockets. The server should be able to do 1000 packets/s with a much
smaller number of threads && sockets. i.e. 50/50.
I thought that num_sql_socks = 1000 meaned that Radiusd would create a connection pool of 1000 MySQL connections.
> I developed a Java client that can create 1000 concurrent threads that
> connect and send accounting requests (start and stop) to Radius server.
See also "radperf" (http://networkradius.com/radperf.html). It can do
load testing and user login simulations.
Thanks I will try.
> However, after sending for 20 or 30 seconds, radius server generated a
> lot of error messages and crashed
>
> Error messages
>
> Tue Nov 10 16:14:34 2009 : Error: Discarding duplicate request from
> client tester1 port 41442 - ID: 134 due to unfinished request 2436
This is likely because your SQL database is too slow.
Have you checked to see if the SQL database can handle 1000 inserts/s?
> Crashed
>
> Nov 10 15:55:35 Mobile6 kernel: radiusd[22242]: segfault at
> 00000000000000c8 rip 0000003daee5306b rsp 00002aae5d82a780 error 4
See doc/bugs for instructions on producing useful crash reports. We
can then use these to fix bugs.
> Nov 10 15:57:29 Mobile6 kernel: radiusd[30941]: segfault at
> 00000000000000c8 rip 0000003daee5306b rsp 00002aaee56de180 error 4
> Nov 10 16:14:36 Mobile kernel: radiusd[10788]: segfault at
> 00000000000000c8 rip 0000003daee5306b rsp 00002aac913de780 error 4
>
> What do I need to do to enable FreeRadius server to meet more than 1000
> accounting request (INSERT AND DELETE) for a second?
Use a database that can handle 1000 requests/s.
I have done separate load tests of INSERT and DELETE on radacct table (using MEMORY engine) and found that MySQL 5.0 can handle about 6000 - 8700 qps. I have used mysqlslap to do that.