# RL9 dnf OOMs with EPEL but only on one machine!

**URL:** <https://forums.rockylinux.org/t/rl9-dnf-ooms-with-epel-but-only-on-one-machine/14964>\
**Category:** Rocky Linux Help & Support\
**Tags:** rocky-linux-9\
**Created:** [July 8, 2024, 12:26pm UTC](https://forums.rockylinux.org/t/rl9-dnf-ooms-with-epel-but-only-on-one-machine/14964 "2024-07-08T12:26:46Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![sweh](https://sea2.discourse-cdn.com/flex020/user_avatar/forums.rockylinux.org/sweh/32/1287_2.png) [@sweh](https://forums.rockylinux.org/u/sweh)\
**Post date:** [July 8, 2024, 12:26pm UTC](https://forums.rockylinux.org/t/rl9-dnf-ooms-with-epel-but-only-on-one-machine/14964/1 "2024-07-08T12:26:46Z")

</div>

I currently have 7 RL9 VMs running.

On one machine, and only one machine, `dnf` will OOM the machine. And only when EPEL is enabled.

(For testing I have disabled swap 'cos otherwise the machine goes into swap-of-death and loadav went to over 50!)

eg

```auto
dnf makecache
...
[652504.185326] systemd invoked oom-killer: gfp_mask=0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), order=0, oom_score_adj=0
...
[652504.185569] [pid] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name
...
[652504.185735] [3661998] 0 3661998 212112 178248 1593344 0 0 dnf
...
[652504.185824] Out of memory: Killed process 3661998 (dnf) total-vm:848448kB, a
non-rss:712980kB, file-rss:12kB, shmem-rss:0kB, UID:0 pgtables:1556kB oom_score_
adj:0

```

But if I disable `epel` then it works fine

```auto
% dnf --disablerepo=epel makecache
Docker CE Stable - x86_64 25 kB/s | 3.5 kB 00:00    
Extra Packages for Enterprise Linux 9 openh264 6.6 kB/s | 993 B 00:00    
MariaDB 3.9 kB/s | 3.4 kB 00:00    
Rocky Linux 9 - BaseOS 8.1 kB/s | 4.1 kB 00:00    
Rocky Linux 9 - AppStream 15 kB/s | 4.5 kB 00:00    
Rocky Linux 9 - Extras 26 kB/s | 2.9 kB 00:00    
Metadata cache created.

```

Indeed a `--disablerepo=* --enablerepo=epel` also explodes.

An `rpm --verify epel-repease` shows the repo file is unchanged.

Even manually cleaning out `/var/cache/dnf` didn’t help.

On another machine on the same physical host

```auto
 /bin/time -v dnf makecache
Extra Packages for Enterprise Linux 9 - x86_64 24 kB/s | 33 kB 00:01
Extra Packages for Enterprise Linux 9 openh264 8.8 kB/s | 993 B 00:00
Rocky Linux 9 - BaseOS 29 kB/s | 4.1 kB 00:00
Rocky Linux 9 - AppStream 14 kB/s | 4.5 kB 00:00
Rocky Linux 9 - Extras 19 kB/s | 2.9 kB 00:00
Metadata cache created.
...
        Maximum resident set size (kbytes): 104388

```

So I have no idea why this one machine is blowing up!

---

_[View the full topic](https://forums.rockylinux.org/t/rl9-dnf-ooms-with-epel-but-only-on-one-machine/14964)._