Hi everyone,

I should start by saying I am a newbie and have recently started using
NGINX and VERYY happy with it. But, I have been trying to run some
stress tests on NGINX (hitting a static file), and it looks like no
matter what I do, server is choking at around 400 req/sec. Isn't this
too low for a static file on NGINX? Am I doing something wrong?

I have increased hard/soft limit to 30K/10K. My machine is reasonably
powerful (quad-core i7 with 8gb RAM) and during the tests, CPU load is
pretty low.

I used apache bench to do performance testing and I am hitting a
static file on local filesystem. I ran the test from 2 different
machines (nginx is on the 3rd machine) and used the following command
on each starting at the same time:

ab -n 10000 -c 400 http://mydomain.com/static.html

Results of one of these is below:

Document Length: 29638 bytes

Concurrency Level: 400
Time taken for tests: 33.856 seconds
Complete requests: 10000
Failed requests: 0
Write errors: 0
Total transferred: 300038664 bytes
HTML transferred: 297222704 bytes
Requests per second: 295.37 [#/sec] (mean)
Time per request: 1354.241 [ms] (mean)
Time per request: 3.386 [ms] (mean, across all concurrent requests)
Transfer rate: 8654.48 [Kbytes/sec] received

Connection Times (ms)
min mean[+/-sd] median max
Connect: 6 448 1276.7 113 21113
Processing: 120 840 621.7 570 5980
Waiting: 5 186 176.3 114 2200
Total: 132 1288 1420.9 695 23143

Percentage of the requests served within a certain time (ms)
50% 695
66% 1134
75% 1474
80% 1721
90% 3027
95% 3685
98% 4688
99% 6445
100% 23143 (longest request)


Am I missing something here??? Relevant parts of NGINX Conf:

worker_processes 6;
worker_rlimit_nofile 30000;

events {
worker_connections 1024;
# multi_accept on;
}

http {

sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
# server_tokens off;

# server_names_hash_bucket_size 64;
# server_name_in_redirect off;

log_format combined_perf '$remote_addr - $remote_user [$time_local] '
'"$request" $status $body_bytes_sent '
'"$http_referer" "$http_user_agent" '
'[$request_time / $upstream_response_time]';

access_log /var/log/nginx/root/access.log combined_perf;
error_log /var/log/nginx/root/error.log error;

##
# Gzip Settings
##

gzip on;
gzip_disable "msie6";
……
}

Thanks a ton!

_______________________________________________
nginx mailing list
nginx@nginx.org
http://mailman.nginx.org/mailman/listinfo/nginx