I am using the rlm_perl module for accounting purposes. I tried to benchmark the whole process by doing something like this : sub accounting{ start_benchmark(); // acct start code here stop_benchmark(); send_bench_results_using_udp(); } sub stop_accounting{ start_benchmark(); // acct stop code here stop_benchmark(); send_bench_results_using_udp(); } I hope that the routines names I used are self-explanatory. In my config I have 32 servers running, using 32 perl clones. The results I get (after 2-3 k requests) are these : Mean time for acct start : 0.005 secs Mean time for acct stop : 0.01 secs Since there is a 1:1 ratio of start/stop requests I guess that we can say that for each request (regardless of its type) I should get a mean of 0.0075 secs. And this in turn should be giving about 130 req/sec. But I am not getting this kind of performance. I know that there is a handling overhead for each request. I don't know the exact percentage of this overhead but for simplicity's sake lets be pessimistic and consider it to be about 30%. Now the performance should be something like 80 req/sec. But I am not getting this kind of performance either. In fact, as soon as my main radius reaches a number of 50 req/sec my NAS starts sending requests to my backup radius. Correct me if I am wrong : If every perl clone can complete each request in X secs shouldn't 32 clones complete 1/X*32 requests per second? Or something similar to that? (even half of that would be great, considering the extra overhead for handling these threads) I used the debug output when my server served about 30-40 requests/sec and I noticed this "perl_pool total/active/spare [32/0/32]" With a utilisation such as that (30-40 req/secs) shouldn't more perl clones be active (unless the above line means something else). The problem does not seem to be the database. I made a simple program that uses the exact same code as my radius perl script does and I can get this kind of performance easily. So what I am trying to say here is that I get this "feeling" that I do not get any concurrency at all from my radius daemons. I checked my Perl installation an both threads and multiplicity is enabled : usethreads=define use5005threads=undef useithreads=define usemultiplicity=define Any help would be appreciated. -- ------------------------------------------- Apostolos Pantsiopoulos Kinetix Tele.com Support Center email: apant@kinetix.gr, support@kinetix.gr Tel. & Fax: +30 2310556134 Mobile : +30 6937069097 MSN : apant2@hotmail.com WWW: http://www.kinetix.gr/ -------------------------------------------