I have nearly implemented a face recognition server on my nvdia tx1.
It loads all face data from MYSQL, listen port, receive picture and return
the nearest face's name.
I use `top` to show how many memory this program used, like this;
>top - 07:46:03 up 2 days, 5:55, 3 users, load average: 0.16, 0.25, 0.24
Tasks: 219 total, 1 running, 218 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.6 us, 2.6 sy, 0.0 ni, 96.7 id, 0.0 wa, 0.0 hi, 0.1 si,
0.0 st
KiB Mem : 4092340 total, 19692 free, 3282888 used, 789760 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 631872 avail Mem
PID USER PR NI VIRT RES SHR S
%CPU %MEM TIME+ COMMAND
11455 ubuntu 20 0 1289156 716612 16284 S 0.0
17.5 0:09.96 sofacer.com
This server cost 17.5% memory, but the size of all face data is 222MB.
I tried `runtime.GC()` and `pprof.WriteHeapProfile()`:
>ubuntu@tegra-ubuntu:~/GoProjects/src/sofacer.com$ go tool pprof mem.profile
Entering interactive mode (type "help" for commands)
(pprof) top
158.68MB of 158.68MB total ( 100%)
flat flat% sum% cum cum%
158.68MB 100% 100% 158.68MB 100%
(pprof)
In low-memory state, tx1 would kill my go server.
How to decrese memory usage in `top` ?
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