Not enough RAM? - Xperia Z2 Q&A, Help & Troubleshooting

Hey guys,
Lately I've had problems with my apps always closing on me in the background when using multiple apps.
I.e I use Chrome with 8-12 Tabs, Moonreader+ also Walkman. And DsDownload and DsFile in the Background.
So whenever I switch back to chrome it has to rebuild the homepage
If I check RAM usage I see 1.5gb free RAM.
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But then I switch to apps in Cache and see 200mb Free.
So.... Am I really in a RAM shortage or does my phone just like to force apps in the background?
Anyone knows a better app for RAM management overview?
Greets
Haldi.

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Ive never actually ran into this issue unless ive had 30 tabs open on chrome or playing a game
I use 3c toolbox to see whats eating my ram

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i got a curious "problem" since a few days:
a long time of using stock ROM from @spuri78 the Task Manager in statusbar shows constantly 1,7 GB free of total 2,7 GB
But since a few days (nothing changed: no mods, no apk´s) it shows only 1,2 GB (and atm only 0,9 GB) free of total 2,7 GB
Cleaning cache with TWRP does not help.
What´s wrong?
Any ideas?

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Ahhh yeah 3c toolbox.
Looks better than system tuner.
BTW, anyone knows which ones are the important values in the Meminfo in /proc/?
MemTotal: 2855172 kB
MemFree: 62272 kB
Buffers: 139868 kB
Cached: 926216 kB
SwapCached: 8488 kB
Active: 937888 kB
Inactive: 1148848 kB
Active(anon): 510396 kB
Inactive(anon): 553188 kB
Active(file): 427492 kB
Inactive(file): 595660 kB
Unevictable: 25424 kB
Mlocked: 0 kB
HighTotal: 2281472 kB
HighFree: 23416 kB
LowTotal: 573700 kB
LowFree: 38856 kB
SwapTotal: 524284 kB
SwapFree: 310548 kB
Dirty: 7976 kB
Writeback: 0 kB
AnonPages: 1045364 kB
Mapped: 388804 kB
Shmem: 17368 kB
Slab: 98972 kB
SReclaimable: 52900 kB
SUnreclaim: 46072 kB
KernelStack: 17464 kB
PageTables: 39648 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 1951868 kB
Committed_AS: 81743384 kB
VmallocTotal: 278528 kB
VmallocUsed: 42756 kB
VmallocChunk: 86028 kB

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I think the Sony system app settings is somewhat off the mark....
MemTotal: 2855172 kB
MemFree: 178412 kB
Buffers: 27884 kB
Cached: 482564 kB
SwapCached: 8556 kB
Active: 1169996 kB
Inactive: 646788 kB
Active(anon): 945612 kB
Inactive(anon): 409452 kB
Active(file): 224384 kB
Inactive(file): 237336 kB
Unevictable: 25424 kB
Mlocked: 0 kB
HighTotal: 2281472 kB
HighFree: 65020 kB
LowTotal: 573700 kB
LowFree: 113392 kB
SwapTotal: 524284 kB
SwapFree: 309728 kB
Dirty: 1400 kB
Writeback: 0 kB
AnonPages: 1330984 kB
Mapped: 354572 kB
Shmem: 23164 kB
Slab: 100720 kB
SReclaimable: 51776 kB
SUnreclaim: 48944 kB
KernelStack: 19456 kB
PageTables: 43072 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 1951868 kB
Committed_AS: 81296116 kB
VmallocTotal: 278528 kB
VmallocUsed: 47400 kB
VmallocChunk: 86028 kB
I wonder which value they take for the free RAM....
BTW, it happened again. I was opening about 7 chrome tabs at once and then it stopped the bandcamp app and stopped playing the new circle of dust album ram showed about 700mb free and then instantly jumped to 950mb free.
P.s before you now think " oh chrome only uses 120mb Ram" lolnope, every tab has its own process with 25-35mb ~.~

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I saw your post and had to reply since they weren't any proper answer for this.
First of all yes your RAM is running out obviously if you have that much open and especially when you have ~300MB of free RAM, android likes to keep 10-15% of RAM free to ensure that it doesn't start lagging sometimes even more.
Also in settings the first page shows services and the second one shows processes this one is obvious though.
I'd suggest you use greenify to close some apps that run in the background to free up some more RAM or just uninstall the stuff you dont need because ~70% of Android apps stay running in the background.

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senoy2 said:
Also in settings the first page shows services and the second one shows processes this one is obvious though.
Click to expand...
Click to collapse
Ahhhh. Yeah that does make sense now ^^
Well yeah, tell me about to many apps ~.~ wiped dalvik and had to rebuild 344 apps, took way to long.
But yeah, some heavy multitasking just happens sometimes.
A lot of chrome tabs with guids and flight comparison pages, a travelguide in Moonreader, Tapatalk for forums browsing, discord for chatting. And then you think you should upload the newest Fotos to your NAS. Out of RAM faster than you expect

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Here in a short video.
https://youtu.be/bPWiIxXVjs0

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Haldi4803 said:
Ahhhh. Yeah that does make sense now ^^
Well yeah, tell me about to many apps ~.~ wiped dalvik and had to rebuild 344 apps, took way to long.
But yeah, some heavy multitasking just happens sometimes.
A lot of chrome tabs with guids and flight comparison pages, a travelguide in Moonreader, Tapatalk for forums browsing, discord for chatting. And then you think you should upload the newest Fotos to your NAS. Out of RAM faster than you expect
Click to expand...
Click to collapse
Yep i do some heavy multi-tasking too but I don't really run out of RAM that often since i have everything organized and am running a CM ROM which helps too.

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maybe turn off stamina mode ?
check developer options in your settings there might be an option turned on to force close tasks in the background
or the option for queue background data in power management is on turn it OFF
if nothing else reset phone it helps
but before that try rebooting
actually you should reboot like once in 3 days
+as said greenify helps alot but it hibernates apps so check the ones you dont use (also works unroot)
---------- Post added at 07:15 PM ---------- Previous post was at 07:13 PM ----------
Zspitter said:
maybe turn off stamina mode ?
check developer options in your settings there might be an option turned on to force close tasks in the background
or the option for queue background data in power management is on turn it OFF
if nothing else reset phone it helps
but before that try rebooting
actually you should reboot like once in 3 days
Click to expand...
Click to collapse
btw im on 5.1.1 official firm unroot bootloader locked and NEVER had ram issues sometimes had like 20 apps in task manager on and going no lags smooth af

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I think that one need to realise that these are smartphones. Not portable supercomputers.
Sounds like OP might want to use an ultra-portable laptop instead.

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I'd love to, in 5.5“ maximum and with 3 days batterylife at least.
Sadly no one wants to sell such a thing
Background processes are set to standard.
I think that's more than 4?