Your application has probably run out of file descriptors. On linux you can get a sense of the number of active file descriptors your program is using by looking in the /proc/$PID/fd directory. Where $PID is the process id of your program.
/proc/$PID/limits will tell you the current limits for that process. On Tuesday, 28 June 2016 14:25:56 UTC+10, dkbala...@gmail.com wrote: > > I am currently facing an issue in my load environment during the load > testing. The description of the issue is given below, > > > We have a Jersey REST application which is being guarded by a GO > application. GO app validates the browser cookie and creates a single host > reverse proxy and serve the request if its a valid one, Initially we got > the below error > > http: proxy error: dial tcp HOSTNAME:PORT can't assign requested address > > > Even after upgrading it to 1.6, the same issue is happening but GO App log > shows the below error > "http: proxy error: net/http: request canceled" > > > I've enabled the DisableKeepAlives and performed the load testing and the > same issue is happening, Now Go app shows the below errors. > > http: proxy error: dial tcp HOSTNAME:PORT: i/o timeout > http: proxy error: net/http: request canceled > > > Code snippet for creating proxy is given below > > > var proxy = httputil.NewSingleHostReverseProxy(proxy_url) > http.DefaultTransport.(*http.Transport).DisableKeepAlives = true > > > We use proxy.ServeHttp after we validate the request. Normally the above > proxy error is not occurring suddenly but it occurs after 2 or 3 hours > after which load testing is started > > After disabling keep alive connection, we see lots of TCP connecion in > TIMED_WAIT state but its not getting closed but the application is hanging > and see the proxy error in the log. > > > So we have to either call > https://golang.org/pkg/net/http/#Transport.CloseIdleConnections or > increase MaxIdleConnsPerHost to some higher value to fix this issue. > The same test cases were working fine in the past but its failing now > suddenly. > > Appreciate your help. > > > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
