[Lispweb] How well Araneida reacts to stress

[Berlin Brown]

Nice, do you have any stats on the machine, 2GB Ram? 2.8mhz?

On 10/5/05, Alan Shields <Alan-Shields at omrf.ouhsc.edu> wrote:
> Using the unit test server and siege, I set up benchmark.sh to test
> how well Araneida would hold up under repeated queries.
>
> I will say that the threaded SBCL server reacts much better than the
> serve event server to high concurrency. It does, however, tend to
> seriously wig out in highly interesting ways at said high concurrency.
>
> 50 continuous concurrent clients seems to be about the limit before
> you start tempting fate.
>
> serve-event will continue serving without throwing conditions, but it
> will be very slow.
>
> The threading seems to have issues with the repeated compile calls in
> the test suite - wrapping them in a mutex reduces most of the issues,
> but not all of them.
>
> Here are the stats for 5 minutes of 50 concurrent clients with random
> delays between requests between one second and 3.
>
> Transactions:                  29582 hits
> Availability:                 100.00 %
> Elapsed time:                 300.03 secs
> Data transferred:            3405777 bytes
> Response time:                  0.00 secs
> Transaction rate:              98.60 trans/sec
> Throughput:                 11351.45 bytes/sec
> Concurrency:                    0.42
> Successful transactions:       29588
> Failed transactions:               0
> Longest transaction:            0.43
> Shortest transaction:           0.00
>
>
> Don't pay too much attention to the throughput numbers, the tests
> transmit very little text. The transactions-per-second is the one to
> look at.
>
> Tonight I'll run a reasonable web server load test overnight on the unit
> test server: 30 simultaneous clients with random delays between one
> second and three, for 16 hours.
>
> This is using testing, not stable.
>
> Remember: if you're expecting a bunch of traffic, the way to go is to
> put Squid in front of Araneida. That's true even for Apache.
>
> Alan
> _______________________________________________
> Lispweb mailing list
> Lispweb at red-bean.com
> http://www.red-bean.com/mailman/listinfo/lispweb
>