App stops working after many requests

[msmaldi]

Running sample in README.md

if run:
siege -c 8 -r 1024 http://0.0.0.0:3003

App stop response.

the problem only occurs with fork, if remove fork the app never stop:
Server.@new ("http", handler: new App ()).run ({"app", "--address=0.0.0.0:3003" });

[arteymix]

I have always had issue with the libsoup backend which does not really fit nicely with the async request handling VSGI does. Have you tried other backends? Like a SCGI with NGINX reverse proxy?

I'll take a look.

[msmaldi]

How do I do thats?

[arteymix]

There's some details here: https://valum-framework.readthedocs.io/en/latest/vsgi/server/scgi/#nginx

[msmaldi]

I'm looking for an ultra fast server
Its works, but performance is very very slow
vgsi + nginx:

$ siege -c 8 -r 1024 localhost
** SIEGE 4.0.4
** Preparing 8 concurrent users for battle.
The server is now under siege...
Transactions:		        8192 hits
Availability:		      100.00 %
Elapsed time:		       60.61 secs
Data transferred:	        0.09 MB
Response time:		        0.01 secs
Transaction rate:	      135.16 trans/sec
Throughput:		        0.00 MB/sec
Concurrency:		        1.06
Successful transactions:        8192
Failed transactions:	           0
Longest transaction:	       60.06
Shortest transaction:	        0.00

my current server implemented in c + nginx reverse proxy:

$ siege -c 8 -r 10240 http://localhost
** SIEGE 4.0.4
** Preparing 8 concurrent users for battle.
The server is now under siege...
Transactions:		       81920 hits
Availability:		      100.00 %
Elapsed time:		        1.84 secs
Data transferred:	        7.03 MB
Response time:		        0.00 secs
Transaction rate:	    44521.74 trans/sec
Throughput:		        3.82 MB/sec
Concurrency:		        6.79
Successful transactions:       81920
Failed transactions:	           0
Longest transaction:	        0.01
Shortest transaction:	        0.00

The performance of scgi may is a bug too

[arteymix]

It looks like a bug, you seem to have a bunch of very fast requests and one with a very lengthy timeout (60 seconds). Can I take a look at the application code?

[arteymix]

VSGI has basically no overhead beside parsing and generating SCGI messages, so I would doubt these numbers reflect the true performance.

[msmaldi]

My code is a simple demonstration

using VSGI;

class App : Handler
{
    public override async bool handle_async (Request req, Response res) throws Error
    {
        return yield res.expand_utf8_async ("Hello world!");
    }
}

Server.@new ("scgi", handler: new App ()).run ({"app", "--address=0.0.0.0:3003", "--forks=4" });

the process use 0% of cpu, maybe has many thread locks, maybe scgi is not closing connection, and is finished after 1min (60sec)