Dear Wietse Venema,
The output of LINUX command "systemctl status postfix" already shows postfix
service alone was using 6.2 GB of RAM.
[root@ns1 ~]# top
top - 20:56:04 up 2 days, 4:01, 1 user, load average: 3.38, 3.50, 3.89
Tasks: 218 total, 6 running, 212 sleeping, 0 stopped, 0 zombie
%Cpu(s): 49.6 us, 5.9 sy, 0.0 ni, 0.0 id, 5.9 wa, 0.0 hi, 0.0 si, 38.7 st
MiB Mem : 7684.1 total, 177.4 free, 7283.0 used, 628.5 buff/cache
MiB Swap: 0.0 total, 0.0 free, 0.0 used. 401.1 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
537498 ceo 20 0 1351868 1.2g 9216 R 39.3 16.5 0:34.02 clamscan
537510 ceo 20 0 1339460 1.2g 9216 R 35.7 16.3 0:31.26 clamscan
537575 ceo@teo+ 20 0 1063560 995.6m 9088 R 25.0 13.0 0:19.80 clamscan
537566 ceo@teo+ 20 0 1035668 993240 8960 R 17.9 12.6 0:18.78 clamscan
17 root 20 0 0 0 0 R 3.6 0.0 33:15.23
rcu_preempt
537675 root 20 0 4244 3072 2816 S 3.6 0.0 0:00.01 sh
1 root 20 0 170924 8576 4992 S 0.0 0.1 10:10.06 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:01.04 kthreadd
Regards,
Mr. Turritopsis Dohrnii Teo En Ming
Targeted Individuals in Singapore
GIMP = Government-Induced Medical Problems
3rd March 2025 Monday
On Monday, March 3rd, 2025 at 8:49 PM, Wietse Venema via Postfix-users
<postfix-users@postfix.org> wrote:
> Turritopsis Dohrnii Teo En Ming via Postfix-users:
>
> > Dear Wietse Venema,
> >
> > Please refer to the output of Linux command "systemctl status postfix".
> >
> > [CODE]
> >
> > postfix.service - Postfix Mail Transport Agent
> > Loaded: loaded (/usr/lib/systemd/system/postfix.service; enabled; preset:
> > disabled)
> > Active: active (running) since Sat 2025-03-01 16:30:47 +08; 1min 58s ago
> > Process: 697 ExecStartPre=/usr/sbin/restorecon -R /var/spool/postfix/pid
> > (code=exited, status=0/SUCCESS)
> > Process: 716 ExecStartPre=/usr/libexec/postfix/aliasesdb (code=exited,
> > status=0/SUCCESS)
> > Process: 787 ExecStartPre=/usr/libexec/postfix/chroot-update (code=exited,
> > status=0/SUCCESS)
> > Process: 819 ExecStart=/usr/sbin/postfix start (code=exited,
> > status=0/SUCCESS)
> > Main PID: 1149 (master)
> > Tasks: 69 (limit: 48939)
> > Memory: 6.2G
> > CPU: 2min 5.479s
> >
> > [/CODE]
> >
> > As shown above, postfix was consuming 6.2 GB of RAM before it got killed by
> > OOM Killer.
>
>
> Please show WHAT PROCESS is using 6G of memory. Use PS, TOP, or
> any command that gives PER PROCESS information. One numbner for
> the entire system is NOT SUFFICIENT.
>
> Wietse
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