Too much sleeping thread processes spawning and waiting for something

[sashko-guz]

Threads of vips is not correctly closed

In my application i have too much "sleeping" processes, that do nothing.

Application:

• just simple http server, that receives the http request, process image and make response of it.

But, during the production usage and debug with pprof:

in htop:
1 root process
84 threadprocesses

in /debug/pprof

211 allocs
0 block
0 cmdline
4 goroutine
211 heap
0 mutex
0 profile
0 symbol
16 threadcreate
0 trace

so goroutine is working fine, but threadprocesses, that must be shutting down is growing and growing. Some of them are reused, but some — not, and still in memory.

already used
MALLOC_ARENA_MAX=2
and
Jemalloc

for memory allocation
Nothing working, the sleeping thread processes still exists

vips-8.15.1
go1.24.0 linux/amd64