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High memory utilization
Posted: 24 Apr 2023, 14:51
by XFNeo
Hi! I have high memory utilization after enabled Hyper Cache.
Before it was ~35% after it comes 80%
But when I check
top or
Process in TOS GUI utilization is still about 35%
Code: Select all
# free -m
total used free shared buff/cache available
Mem: 3761 2885 79 108 796 700
Swap: 1951 366 1585
Setu up:
F2-423
TOS 5.1.31, check with 5.1.33 also
2 NVME in RAID 0
4 Gb RAM
Re: High memory utilization
Posted: 24 Apr 2023, 18:41
by TMzethar
This is a normal situation that enabling SSD cache will consume a certain amount of TNAS memory.
You can make it smaller according to your needs.
Re: High memory utilization
Posted: 24 Apr 2023, 20:35
by XFNeo
How I can adjust it and where can I see the current consumption for hyper cache?
Re: High memory utilization
Posted: 24 Apr 2023, 21:41
by XFNeo
Isn't 40% of RAM too much for Hyper cache?
Re: High memory utilization
Posted: 25 Apr 2023, 09:28
by TMzethar
After you disable and re-enable Hyper Cache, you can choose the capacity again.
Re: High memory utilization
Posted: 25 Apr 2023, 14:25
by XFNeo
Could you explane me how is cache size on nvme disk related to RAM consumption? And what are the recommendations for cache size?
Re: High memory utilization
Posted: 25 Apr 2023, 18:40
by TMtina
The cache size on the nvme disk is not directly related to the RAM consumption. Normally, the larger the cache size of the nvme disk, the better.
Re: High memory utilization
Posted: 25 Apr 2023, 20:03
by XFNeo
How I can figure out how many RAM utilized by cache?
Re: High memory utilization
Posted: 25 Apr 2023, 21:19
by TMtina
You can use the command free -h to view RAM usage, including cached information.
Re: High memory utilization
Posted: 26 Apr 2023, 16:15
by XFNeo
TMtina wrote: ↑25 Apr 2023, 21:19
You can use the command free -h to view RAM usage, including cached information.
This command does not show how many RAM exactly utilized by cache.