Anyone seeing more memory usage with 23.01?
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Seeing 84% on my SG 1100 after upgrade. Started somewhere in the 30% range and has kept creeping up from there. It's a slow increase, but I am waiting to reboot to see how far it goes.
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Is that as shown on the dashboard?
Can you see what is using it in Diag > System Activity or in top output at the CLI?
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@stephenw10 Hi Steve. Yeah, that's what I see in the GUI.
It's actually come up a bit since earlier this morning.
Here is the Sys Activity tab.
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The graph of System/Memory from Status > Monitoring can also be helpful to check against.
"Free RAM is wasted RAM" is still true, if you see a bunch marked for caching then it's also normal/expected.
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@jimp very true. Here's the monitoring page. I will keep it running and see if it stabilizes over time.
Thanks Jim!
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That's the CPU view, click the wrench and change it to System > Memory
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This post is deleted! -
Same on my SG-1100
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That's the processor usage, you need to select 'Memory' in the settings like:
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@stephenw10 yup. I posted that pre-coffee...
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Looks like a good chunk of your memory usage is ZFS ARC, which can free itself as needed if other things need the RAM.
The first boot post-upgrade will show high ARC/wired usage because of all the disk activity associated with the upgrade.
If you reboot after it'll go back down to "normal" but may grow over time.
But again, it's like caching RAM, any free RAM is wasted RAM.
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@jimp Thanks Jim!
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Have there been changes since 23.01?
Does the bar contain noch wired and arc RAM as well? Or has the arc ram been raised?
For ~7gb ram there should not be much cache necessary. -
@renegade said in Anyone seeing more memory usage with 23.01?:
Have there been changes since 23.01?
Does the bar contain noch wired and arc RAM as well? Or has the arc ram been raised?
For ~7gb ram there should not be much cache necessary.ZFS ARC is counted under Wired.
We didn't explicitly change any tuning but there was a sizable jump between FreeBSD 12.x and FreeBSD 14.x.
Even on 23.01, though, some people reported the same observation where RAM usage appeared higher the first boot after an upgrade.
The memory in the graph marked cache is different, it's not related to ARC. But you want as much caching going on as possible to make use of the RAM rather than it just sitting there. If there is memory pressure, both cache and ARC will lower their own usage to make room for whatever needs it.
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@jimp ok thanks for the explanation.
Understood and makes sense, but it is hard to see if there is ram left for eg plug-ins or not.
