El vie., 14 ago. 2020 a las 9:28, Przemek Klosowski via devel (<
[email protected]>) escribió:
> On 8/14/20 7:33 AM, John M. Harris Jr wrote:
> > On Wednesday, August 12, 2020 1:16:34 PM MST Przemek Klosowski via devel
> > wrote:
> >>
> >> This is weird---your swap was 100% full, and ram almost full, and yet
> >> killing 4GB VirtualBox didn't seem to free up memory. I suspect some
> >> sort of measurement or reporting error---if these numbers were accurate,
> >> EarlyOOM did have a reason to panic and kill zoom. BTW, zoom taking 721
> >> MiB is crazy.
>
> > Are you kidding? The system still had over a quarter of a gigabyte of
> free
> > RAM. There's no reason to start killing off processes at that point.
> That's
> > tons of free memory. To put that into perspective, that's enough free
> memory
> > to store over 1000 average-length novels directly in memory.
>
> When the swap is 100% full, it is not like you have a bunch of processes
> neatly stored in it, and some free memory available---you have a mess of
> partly swapped out processes reading back their pages from swap and
> pushing other processes' RAM pages onto the fragmented swap, when they
> are trying to run.
>
> This is the worst case of disk usage, and as we discussed before, the
> transfer speeds for such traffic will be hundreds/thousands times
> slower---I would expect latencies going into tens of seconds. So, no, I
> am not kidding.
> _______________________________________________
>
2 comments:
- I don't use disk-based swap, only zram.
- It happened again, and in this case there is no Virtual Machine nor Zoom
app running:
ago 14 15:08:37 dublin.ireland.home earlyoom[888]: sending SIGTERM to
process 2052260 uid 1000 "Web Content": badness 322, VmRSS 447 MiB
ago 14 15:08:40 dublin.ireland.home earlyoom[888]: process exited after 2.7
seconds
ago 14 15:12:15 dublin.ireland.home earlyoom[888]: mem avail: 395 of
15887 MiB ( 2.49%), swap free: 0 of 4095 MiB ( 0.00%)
ago 14 15:12:15 dublin.ireland.home earlyoom[888]: low memory! at or below
SIGTERM limits: mem 2.52%, swap 10.00%
ago 14 15:12:15 dublin.ireland.home earlyoom[888]: sending SIGTERM to
process 2055755 uid 1000 "Web Content": badness 319, VmRSS 392 MiB
ago 14 15:12:17 dublin.ireland.home earlyoom[888]: process exited after 2.8
seconds
ago 14 15:28:35 dublin.ireland.home earlyoom[888]: mem avail: 371 of
15887 MiB ( 2.34%), swap free: 0 of 4095 MiB ( 0.00%)
ago 14 15:28:35 dublin.ireland.home earlyoom[888]: low memory! at or below
SIGTERM limits: mem 2.52%, swap 10.00%
ago 14 15:28:35 dublin.ireland.home earlyoom[888]: sending SIGTERM to
process 2062157 uid 1000 "Web Content": badness 327, VmRSS 553 MiB
ago 14 15:28:37 dublin.ireland.home earlyoom[888]: process exited after 2.3
seconds
Perhaps this ps_mem snippet is useful:
<snip
Private + Shared = RAM used Program
</snip>
....
<snip>
294.8 MiB + 4.7 MiB = 299.4 MiB telegram-desktop.bin
290.3 MiB + 22.1 MiB = 312.4 MiB rocketchat-desktop (5)
323.8 MiB + 9.5 MiB = 333.2 MiB kwin_x11 (9)
344.5 MiB + 1.4 MiB = 345.8 MiB nextcloud
373.2 MiB + 21.2 MiB = 394.4 MiB spotify (5)
416.6 MiB + 1.3 MiB = 417.9 MiB plasma-discover
448.5 MiB + 16.6 MiB = 465.2 MiB MainThread
892.8 MiB + 444.5 KiB = 893.2 MiB packagekitd
1.0 GiB + 8.6 MiB = 1.0 GiB plasmashell
1.9 GiB + 81.0 MiB = 1.9 GiB Web Content (9)
---------------------------------
9.7 GiB
=================================
</snip>
Well I'll report soon, any idea (remember I have 16 GB of RAM with 4G of
zram-based swap) will be welcome
--
--
Sergio Belkin
LPIC-2 Certified - http://www.lpi.org
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