Обычно это не утечки памяти, а раздувание памяти из-за бездумного программирования: чтение огромного JSON целиком в память, чтение всех записей с БД в память (Product.all) и пр.
Also etwas so:
same => n,Playback(demo-nogo,noanswer) ;->183 Session Progress
same => n,Answer ; -> 200 OK
в машине 32 гига памяти, тест запустил так
в итоге в консоли отловил это
[ 77.839328] EDAC MC0: 1 CE ie31200 CE on mc#0csrow#0channel#0 (csrow:0 channel:0 page:0x0 offset:0x0 grain:8 syndrome:0x8a)
[ 79.588921] {1}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 0
[ 79.588921] {1}[Hardware Error]: event severity: fatal
[ 79.588922] {1}[Hardware Error]: Error 0, type: fatal
[ 79.588922] {1}[Hardware Error]: fru_text: UncorrectedErr
[ 79.588922] {1}[Hardware Error]: section_type: memory error
[ 79.588922] {1}[Hardware Error]: node: 1 device: 0
[ 79.588922] {1}[Hardware Error]: error_type: 3, multi-bit ECC
[ 79.588923] Kernel panic - not syncing: Fatal hardware error!
[ 79.588923] CPU: 0 PID: 1562 Comm: memtester Not tainted 4.19.0-27-amd64 #1 Debian 4.19.316-1
[ 79.588923] Hardware name: Supermicro Super Server/X11SSL-F, BIOS 2.0c 10/06/2017
[ 79.588923] Call Trace:
[ 79.588923] dump_stack+0x66/0x81
[ 79.588923] panic+0xfa/0x25d
[ 79.588924] ? ghes_copy_tofrom_phys+0xe4/0x260
[ 79.588924] __ghes_panic.cold.21+0x21/0x21
[ 79.588924] ghes_notify_nmi+0xca/0x180
[ 79.588924] nmi_handle+0x62/0x120
[ 79.588924] default_do_nmi+0x4e/0x100
[ 79.588924] do_nmi+0xff/0x150
[ 79.588925] nmi+0xa6/0xef
[ 79.588925] RIP: 0033:0x55ab30302d82
[ 79.588925] Code: 0f 1f 84 00 00 00 00 00 48 83 c2 01 48 83 c0 08 48 83 eb 08 49 39 d6 0f 84 93 00 00 00 4a 8d 34 2a 48 8b 08 83 e6 01 48 89 de <48> 0f 44 f0 48 39 ce 74 d5 8b 05 e7 34 20 00 85 c0 0f 85 a7 00 00
[ 79.588925] RSP: 002b:00007ffe2f76c970 EFLAGS: 00000202
[ 79.588926] RAX: 00007f5be9800428 RBX: ffff80a4167ffbd7 RCX: ffff80a4167ffbd7
[ 79.588926] RDX: 0000000040fd6285 RSI: ffff80a4167ffbd7 RDI: 0000000000000000
[ 79.588926] RBP: 00007f59e194f000 R08: 00007f5e46b0b8c0 R09: 00007f5e46b10500
[ 79.588926] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 79.588927] R13: 0000000000000000 R14: 000000008c9ffe02 R15: 0000000000000000
[ 79.588983] Kernel Offset: 0xa00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)