This is an Nginx fork that adds dtrace USDT probes.
Installation:
./configure --with-dtrace-probes \
--with-dtrace=/usr/sbin/dtrace \
...
make
make install
Usage on Linux (with systemtap):
# make the stap-nginx script visiable in your PATH
export PATH=/usr/local/nginx/sbin:$PATH
# list all the static probes available in your nginx
stap-nginx -L 'process("nginx").mark("*")'
# run the test.stp file
stap-nginx test.stp
Sample test.stp file:
probe begin
{
print("Tracing. Hit CTRL-C to stop.\n")
}
probe process("nginx").mark("http-subrequest-start")
{
printf("uri: %s?%s\n", ngx_http_req_uri($arg1),
ngx_http_req_args($arg1))
}
For now, only tested on Solaris 11 Express and Fedora Linux 17.
The original Nginx documentation is available at http://nginx.org
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