在实践中C10k怎么样？

Question

I just tested a small application made using Tornado , and i'm far from the 10k simultanuous connections ! To make the test, i've used Siege , under OpenSuse 12.2 64 bit , the machine is i7 with 8GB Here is the result:

siege -c 4000 localhost:8000

I got this error:

Transactions:                   2164 hits
Availability:                  39.90 %
Elapsed time:                   6.85 secs
Data transferred:               2.52 MB
Response time:                  1.04 secs
Transaction rate:             315.91 trans/sec
Throughput:                     0.37 MB/sec
Concurrency:                  329.74
Successful transactions:        2164
Failed transactions:            3260
Longest transaction:            5.94
Shortest transaction:           0.00

And if i use 10k connection:

siege -c 10000 localhost:8000

I get an error:

[error] descriptor table full sock.c:109: Too many open files

Answer 1

Check the output from the ulimit command. You'll need to increase the file descriptor limit on both siege and the tornado webserver to finish your benchmark.