Redis Connection Limit

[Pawan Raina]

With Redis Timeout at 180 and MaxClients is commented out, we have noticed that Redis is forcibly closing connections after total number of connected clients reaches around 10235 (approx). Does anyone have any idea what would cause this behavior?

Thank you

Raina

[Josiah Carlson]

As per the configuration file:
# Set the max number of connected clients at the same time. By default
# this limit is set to 10000 clients, however if the Redis server is not
# able ot configure the process file limit to allow for the specified limit
# the max number of allowed clients is set to the current file limit
...

According to the config file, Redis automatically closes sockets when
it exceeds the (by default) 10k clients. Looking at the source, I'm
not seeing an explicit constant that does this.

What is the ulimit for file handles on your machine? Are you sure that
you're running out of connections due to a file handle limit, and not
due to connection timeout?

Regards,
- Josiah

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[Jokea]

I assuming you are using redis-2.4 which has a hard limit of 10240 clients.


Regards,
Jokea

[Pawan Raina]

I am using 2.2.12 and I know I should upgrade it which we plan to do by end of this quarter.   File handle limit is 64K.

What is the easiest way (if any) to increase this hard limit from 10240 to a higher number?

Thank you

Raina

--
Thanks
Raina

 

[Josiah Carlson]

Edit the source and compile it yourself. You should be able to grep
for the file handle limit.

- Josiah