Varnish constantly running into an OOM condition.
Chris Lee
chris.lee at cern.ch
Thu Jul 10 12:29:18 UTC 2025
Hi again.
I just noticed something while looking into this:
The other suspect is the newer jemalloc version in the repository
I noticed that jemalloc doesn’t appear to be used, and the RPM isn’t even installed or listed a dependency when using the default package in AppSteam [1]
[atlasfrontiergpn02 ~]# ldd /usr/sbin/varnishd
linux-vdso.so.1 (0x00007ffc84fb0000)
libpcre.so.1 => /lib64/libpcre.so.1 (0x00007fd43b8ad000)
libm.so.6 => /lib64/libm.so.6 (0x00007fd43b7d2000)
libc.so.6 => /lib64/libc.so.6 (0x00007fd43b400000)
/lib64/ld-linux-x86-64.so.2 (0x00007fd43ba8f000)
Testing now with a new node with V7, I can see the jemalloc is now installed as a dependency?
I am assuming that this could be causing the issues with the overheads?
Cheers
Chris
[1]
[root at atlasfrontiergpn02 ~]# rpm -qi varnish
Name : varnish
Version : 6.6.2
Release : 6.el9_6.1
Architecture: x86_64
Install Date: Wed 02 Jul 2025 02:35:38 PM CEST
Group : Unspecified
Size : 3133696
License : BSD
Signature : RSA/SHA256, Mon 02 Jun 2025 01:28:24 PM CEST, Key ID d36cb86cb86b3716
Source RPM : varnish-6.6.2-6.el9_6.1.src.rpm
Build Date : Mon 02 Jun 2025 05:56:10 AM CEST
Build Host : x64-builder01.almalinux.org
Packager : AlmaLinux Packaging Team <packager at almalinux.org>
Vendor : AlmaLinux
URL : https://www.varnish-cache.org/
Summary : High-performance HTTP accelerator
Description :
This is Varnish Cache, a high-performance HTTP accelerator.
Varnish Cache stores web pages in memory so web servers don’t have to
create the same web page over and over again. Varnish Cache serves
pages much faster than any application server; giving the website a
significant speed up.
Documentation wiki and additional information about Varnish Cache is
available on: https://www.varnish-cache.org/
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