OPNsense Forum
Archive => 20.1 Legacy Series => Topic started by: Ricardo on June 16, 2020, 07:43:30 am
-
Hi opnsense folks!
I want to utilize the most of the RAM sitting in my router, and mostly idle (the dashboard says 600MB of the 4096MB is utilized, the rest looks not used.
I set up tmpfs for /var and /tmp, but thats only minimal size of files.
I use unbound DNS to cache records in memory, but thats also very minimal amount.
I use maltrail, but due to the current setup, it stores its files not under /var or /tmp, but under /root, so its torturing the underlying ssd, and not the RAM.
I enabled netflow in the past, it consumed a significant amount of RAM, but the python scripts running in the background killed the already underpowered CPU as well, so I stopped it.
What other service(s) enabled would benefit from the plenty of available RAM, while keeping the CPU usage still low?
-
Hello.
if you use it on a virtual machine, you could see that it use 70% of the memory alocated.
I think that opnsense only report "memory use", and do not show you how much buffer it use.
I you know linux that it's to say that it only show from free -m "memory usage" and not buffer.
-
This is a dedicated hardware router (APU2), no virtualization is utilized (the router is neither a VM guest nor it runs as a VM host for other downlink VM guests).
-
I know, but what i said is that it already used 70% of the memory but it does not show you in the interface.
On my case, if i take a look on the interface, opnsense says "16%" of memory used.
But on the host i see 70% of the memory used.
If i add more memory, it always use 70% (or something like that).
So has i said even if you do not see it on the panel because it report only "used memory", it already used something like 70% of the memory to buffer etc.
So like always in linux, all your memory is used by buffer in fact, and you could see it with free -m, but not sure if it's possible on the opnsense rom.
-
This is my current memory allocation details:
SYSTEM MEMORY INFORMATION:
mem_wire: 568782848 ( 542MB) [ 13%] Wired: disabled for paging out
mem_active: + 127094784 ( 121MB) [ 3%] Active: recently referenced
mem_inactive:+ 2809913344 ( 2679MB) [ 68%] Inactive: recently not referenced
mem_cache: + 0 ( 0MB) [ 0%] Cached: almost avail. for allocation
mem_free: + 603004928 ( 575MB) [ 14%] Free: fully available for allocation
mem_gap_vm: + -217088 ( 0MB) [ 0%] Memory gap: UNKNOWN
______________ ____________ ___________ ______
mem_all: = 4108578816 ( 3918MB) [100%] Total real memory managed
mem_gap_sys: + 129896448 ( 123MB) Memory gap: Kernel?!
______________ ____________ ___________
mem_phys: = 4238475264 ( 4042MB) Total real memory available
mem_gap_hw: + 56492032 ( 53MB) Memory gap: Segment Mappings?!
______________ ____________ ___________
mem_hw: = 4294967296 ( 4096MB) Total real memory installed
SYSTEM MEMORY SUMMARY:
mem_used: 882049024 ( 841MB) [ 20%] Logically used memory
mem_avail: + 3412918272 ( 3254MB) [ 79%] Logically available memory
______________ ____________ __________ _______
mem_total: = 4294967296 ( 4096MB) [100%] Logically total memory
Does that mean I have plenty of un-itilized memory, that could be actively used for additional added value service?