# What does metric Session Current (scur) signify for backend

**URL:** <https://discourse.haproxy.org/t/what-does-metric-session-current-scur-signify-for-backend/5135>\
**Category:** Help!\
**Created:** [April 25, 2020, 7:55am UTC](https://discourse.haproxy.org/t/what-does-metric-session-current-scur-signify-for-backend/5135 "2020-04-25T07:55:03Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![tt100](https://avatars.discourse-cdn.com/v4/letter/t/9fc29f/32.png) [@tt100](https://discourse.haproxy.org/u/tt100)\
**Post date:** [April 25, 2020, 7:55am UTC](https://discourse.haproxy.org/t/what-does-metric-session-current-scur-signify-for-backend/5135/1 "2020-04-25T07:55:03Z")

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Hi,

Could someone please explain what scur mean for backend.

I am generating constant load with 100 connections using wrk. For frontend this metric correctly comes to be 100, but for backend, it occasionally comes to be 1 and then 0 for whole duration.  
While checking at the server (using ss command), I see constant 100 connections being made from HAProxy instance to this server. My understanding was that this metric gives the current number of active connections to the server (which should have been 100). But since it is giving 0 for whole duration of load generation, I am getting confused.

Load generation:

> wrk -c 100 -t5 -d1m -R1000 [http://VIP](http://VIP)

_Config_

> global  
> log /dev/log local0  
> log /dev/log local1 notice  
> chroot /var/lib/haproxy  
> user haproxy  
> group haproxy  
> daemon  
> #maxconn 65536
> 
> defaults  
> log global  
> mode http  
> http-reuse safe  
> option http-keep-alive  
> no log  
> timeout connect 5000  
> timeout client 50000  
> timeout server 50000  
> errorfile 400 /etc/haproxy/errors/400.http  
> errorfile 403 /etc/haproxy/errors/403.http  
> errorfile 408 /etc/haproxy/errors/408.http  
> errorfile 500 /etc/haproxy/errors/500.http  
> errorfile 502 /etc/haproxy/errors/502.http  
> errorfile 503 /etc/haproxy/errors/503.http  
> errorfile 504 /etc/haproxy/errors/504.http
> 
> frontend test  
> bind :80  
> mode http  
> maxconn 65536  
> default\_backend nginx
> 
> backend nginx  
> mode http  
> balance leastconn  
> server 10.30.10.110 10.30.10.110:81 weight 255

I am using HAProxy 2.0.14 for the test. Also, is “connect” metric the only way to get the actual number of connections being made to the backend?