[squid-users] filedescriptors on debian/systemd

[ngtech1ltd at gmail.com]

Hey,

What's the bug exactly?
The design of systemd is to enforce the FD limit.
This is coming from the init 0 level of the design and due to this,
squid cannot "patch" the kernel at runtime like any other process.
The OS and systemd do not give any API to allow a request for"more FD".
I assume that these days it makes sense for a request from the kernel or
systemd to implement such a feature but I don't know if anyone have worked on this.

Thanks,
Eliezer

----
Eliezer Croitoru
NgTech, Tech Support
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Email: ngtech1ltd at gmail.com
Web: https://ngtech.co.il/
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-----Original Message-----
From: squid-users <squid-users-bounces at lists.squid-cache.org> On Behalf Of Matus UHLAR - fantomas
Sent: Tuesday, 2 August 2022 16:54
To: squid-users at lists.squid-cache.org
Subject: [squid-users] filedescriptors on debian/systemd

Hello,

I have encountered Debian bug 934208:

2022/07/28 16:40:53 kid1| With 1024 file descriptors available
2022/07/29 06:50:18 kid1| WARNING! Your cache is running out of filedescriptors

according to the bug report:

"Under systemd the default is not to have any limitation at all."

which seems not to be true, but:

Unfortunately there are still some bugs that needs to be straightened
out upstream for Squid to use the --with-filedescriptors value when
there is *no* specific upper limit provided by the OS.


limits when I log in (ssh or console) are 1024(soft) and 1048576 (hard) and 
yet squid starts with 1024 FDs.

I have configured:

# cat /etc/systemd/system/squid.service.d/override.conf
[Service]
LimitNOFILE=65536

and after reloading systemd:

# systemctl daemon-reload

and restart squid it seems to work properly:

2022/08/02 15:52:28 kid1| With 65536 file descriptors available


does anyone encounter this bug?
How do you fix it?

-- 
Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
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