Created attachment 509 [details] squid 100% CPU usage on one core IPFire forum topic with more details and tests: http://forum.ipfire.org/viewtopic.php?f=27&t=18413 IPFire forum post with solution: http://forum.ipfire.org/viewtopic.php?f=27&t=18413&start=15#p106363 Using IPFire Core 109 with Squid. Machine info: http://fireinfo.ipfire.org/profile/6a9eef819f5d3cb868ca056e5cad466374526206 Downloading a 1 GB file over a gigabit connection results in squid using 100% CPU on one core and strace shows 99.73 2.059048 17 120166 epoll_wait. Upgrading the kernel fixes the problem. Steps taken to upgrade the kernel: ssh into IPFire. cd \ wget http://people.ipfire.org/~trikolon/kern ... 13.tar.bz2 tar xvf kernel-4.9.13.tar.bz2 grub-mkconfig -o /boot/grub/grub.cfg Reboot. Done. Idea and kernel from http://forum.ipfire.org/viewtopic.php?f=50&t=18372#p105975
This is not a release kernel so I have no idea what has changed there. Could you please test Core Update 110 which is currently available for testing and includes a new version of squid.
Update to 110. Exactly the same situation. Updated the kernel again, problem fixed.
Is this issue still valid?
I have been using a different than stock kernel, version 4.9.24 and did not have any problems since. But since the stock kernel has not changed, I am guessing the problem is still there.
Okay, thanks. Kernel 4.14 is currently in development, this will be hopefully fixed with it (https://wiki.ipfire.org/devel/telco/2017-12-04).
we are on 4.14 now