実行中のプロセスのvm.max_map_countを確認する方法はありますか？
Ubuntu 18.04を使用しています
答え1
vm.max_map_count はシステム全体の最大値です。
プロセスの行数を数えて、プロセスで使用されるマッピングの数を見つけることができると思います。/proc/pid/マップ文書
$ cat /proc/173/maps
7fcde28c5000-7fcde28f7000 r--p 00000000 00:00 398275 /usr/lib/locale/C.UTF-8/LC_CTYPE
7fcde28f7000-7fcde2a6a000 r--p 00000000 00:00 398274 /usr/lib/locale/C.UTF-8/LC_COLLATE
7fcde2a6a000-7fcde2d50000 r--p 00000000 00:00 398286 /usr/lib/locale/locale-archive
7fcde2d50000-7fcde2d75000 r--p 00000000 00:00 407224 /usr/lib/x86_64-linux-gnu/libc-2.31.so
7fcde2d75000-7fcde2eed000 r-xp 00025000 00:00 407224 /usr/lib/x86_64-linux-gnu/libc-2.31.so
7fcde2eed000-7fcde2f37000 r--p 0019d000 00:00 407224 /usr/lib/x86_64-linux-gnu/libc-2.31.so
7fcde2f37000-7fcde2f38000 ---p 001e7000 00:00 407224 /usr/lib/x86_64-linux-gnu/libc-2.31.so
7fcde2f38000-7fcde2f3b000 r--p 001e7000 00:00 407224 /usr/lib/x86_64-linux-gnu/libc-2.31.so
7fcde2f3b000-7fcde2f3e000 rw-p 001ea000 00:00 407224 /usr/lib/x86_64-linux-gnu/libc-2.31.so
7fcde2f3e000-7fcde2f42000 rw-p 00000000 00:00 0
7fcde2f4e000-7fcde2f4f000 r--p 00000000 00:00 398282 /usr/lib/locale/C.UTF-8/LC_NUMERIC
7fcde2f4f000-7fcde2f50000 r--p 00000000 00:00 398285 /usr/lib/locale/C.UTF-8/LC_TIME
7fcde2f50000-7fcde2f5e000 r--p 00000000 00:00 407648 /usr/lib/x86_64-linux-gnu/libtinfo.so.6.2
7fcde2f5e000-7fcde2f6d000 r-xp 0000e000 00:00 407648 /usr/lib/x86_64-linux-gnu/libtinfo.so.6.2
7fcde2f6d000-7fcde2f7b000 r--p 0001d000 00:00 407648 /usr/lib/x86_64-linux-gnu/libtinfo.so.6.2
7fcde2f7b000-7fcde2f7f000 r--p 0002a000 00:00 407648 /usr/lib/x86_64-linux-gnu/libtinfo.so.6.2
7fcde2f7f000-7fcde2f80000 rw-p 0002e000 00:00 407648 /usr/lib/x86_64-linux-gnu/libtinfo.so.6.2
7fcde2f80000-7fcde2f83000 rw-p 00000000 00:00 0
7fcde2f83000-7fcde2f84000 r--p 00000000 00:00 398280 /usr/lib/locale/C.UTF-8/LC_MONETARY
7fcde2f84000-7fcde2f85000 r--p 00000000 00:00 398279 /usr/lib/locale/C.UTF-8/LC_MESSAGES/SYS_LC_MESSAGES
7fcde2f85000-7fcde2f86000 r--p 00000000 00:00 398283 /usr/lib/locale/C.UTF-8/LC_PAPER
7fcde2f86000-7fcde2f87000 r--p 00000000 00:00 398281 /usr/lib/locale/C.UTF-8/LC_NAME
7fcde2f87000-7fcde2f88000 r--p 00000000 00:00 398273 /usr/lib/locale/C.UTF-8/LC_ADDRESS
7fcde2f88000-7fcde2f89000 r--p 00000000 00:00 398284 /usr/lib/locale/C.UTF-8/LC_TELEPHONE
7fcde2f89000-7fcde2f90000 r--s 00000000 00:00 407071 /usr/lib/x86_64-linux-gnu/gconv/gconv-modules.cache
7fcde2f90000-7fcde2f91000 r--p 00000000 00:00 407107 /usr/lib/x86_64-linux-gnu/ld-2.31.so
7fcde2f91000-7fcde2fb3000 r-xp 00001000 00:00 407107 /usr/lib/x86_64-linux-gnu/ld-2.31.so
7fcde2fb3000-7fcde2fb4000 r-xp 00023000 00:00 407107 /usr/lib/x86_64-linux-gnu/ld-2.31.so
7fcde2fb4000-7fcde2fbb000 r--p 00024000 00:00 407107 /usr/lib/x86_64-linux-gnu/ld-2.31.so
7fcde2fbb000-7fcde2fbc000 r--p 0002b000 00:00 407107 /usr/lib/x86_64-linux-gnu/ld-2.31.so
7fcde2fbc000-7fcde2fbd000 r--p 00000000 00:00 398277 /usr/lib/locale/C.UTF-8/LC_MEASUREMENT
7fcde2fbd000-7fcde2fbe000 r--p 0002c000 00:00 407107 /usr/lib/x86_64-linux-gnu/ld-2.31.so
7fcde2fbe000-7fcde2fbf000 rw-p 0002d000 00:00 407107 /usr/lib/x86_64-linux-gnu/ld-2.31.so
7fcde2fbf000-7fcde2fc2000 rw-p 00000000 00:00 0
7fcde2fc2000-7fcde2fc3000 r--p 00000000 00:00 398276 /usr/lib/locale/C.UTF-8/LC_IDENTIFICATION
7fcde2fc3000-7fcde2fc6000 r--p 00000000 00:00 397207 /usr/bin/less
7fcde2fc6000-7fcde2fc7000 r--p 00003000 00:00 397207 /usr/bin/less
7fcde2fc7000-7fcde2fde000 r-xp 00004000 00:00 397207 /usr/bin/less
7fcde2fde000-7fcde2fdf000 r-xp 0001b000 00:00 397207 /usr/bin/less
7fcde2fdf000-7fcde2fe9000 r--p 0001c000 00:00 397207 /usr/bin/less
7fcde2fe9000-7fcde2fea000 r--p 00026000 00:00 397207 /usr/bin/less
7fcde2feb000-7fcde2fec000 r--p 00027000 00:00 397207 /usr/bin/less
7fcde2fec000-7fcde2ff0000 rw-p 00028000 00:00 397207 /usr/bin/less
7fcde2ff0000-7fcde2ff5000 rw-p 00000000 00:00 0
7fffdf70f000-7fffdf730000 rw-p 00000000 00:00 0 [heap]
7fffe5eff000-7fffe66ff000 rw-p 00000000 00:00 0 [stack]
7fffe6a8c000-7fffe6a8d000 r-xp 00000000 00:00 0 [vdso]
pmap コマンドの出力も使用できます。