This caused 100% cpu in the ns-slapd in the master server..
I tried to get a system core file but the server crashed during the process..
Currently I only have this info:
# strace -f -p 59308
strace: Process 59308 attached with 45 threads
[pid 59876] select(0, NULL, NULL, NULL, {0, 270564} <unfinished ...>
[pid 59355] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 262, NULL <unfinished ...>
[pid 59354] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 280, NULL <unfinished ...>
[pid 59353] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 260, NULL <unfinished ...>
[pid 59352] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 272, NULL <unfinished ...>
[pid 59351] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 258, NULL <unfinished ...>
[pid 59350] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 276, NULL <unfinished ...>
[pid 59349] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 264, NULL <unfinished ...>
[pid 59348] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 278, NULL <unfinished ...>
[pid 59347] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 266, NULL <unfinished ...>
[pid 59346] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 282, NULL <unfinished ...>
[pid 59345] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 274, NULL <unfinished ...>
[pid 59344] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 284, NULL <unfinished ...>
[pid 59343] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 269, NULL <unfinished ...>
[pid 59342] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 288, NULL <unfinished ...>
[pid 59341] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 270, NULL <unfinished ...>
[pid 59340] futex(0x55fbedc8d08c, FUTEX_WAIT_PRIVATE, 286, NULL <unfinished ...>
[pid 59339] restart_syscall(<... resuming interrupted futex ...> <unfinished ...>
[pid 59338] restart_syscall(<... resuming interrupted futex ...> <unfinished ...>
[pid 59337] futex(0x55fbedc4500c, FUTEX_WAIT_PRIVATE, 1, NULL <unfinished ...>
[pid 59336] restart_syscall(<... resuming interrupted futex ...> <unfinished ...>
[pid 59335] futex(0x55fbedc45e0c, FUTEX_WAIT_PRIVATE, 1, NULL <unfinished ...>
[pid 59333] select(0, NULL, NULL, NULL, {0, 236980} <unfinished ...>
[pid 59332] select(0, NULL, NULL, NULL, {0, 199957} <unfinished ...>
[pid 59331] select(0, NULL, NULL, NULL, {1, 524631} <unfinished ...>
[pid 59330] select(0, NULL, NULL, NULL, {0, 66126} <unfinished ...>
[pid 59325] epoll_wait(12, <unfinished ...>
[pid 59324] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 16, NULL <unfinished ...>
[pid 59323] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 15, NULL <unfinished ...>
[pid 59322] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 14, NULL <unfinished ...>
[pid 59321] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 13, NULL <unfinished ...>
[pid 59320] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 12, NULL <unfinished ...>
[pid 59319] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 11, NULL <unfinished ...>
[pid 59318] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 10, NULL <unfinished ...>
[pid 59317] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 9, NULL <unfinished ...>
[pid 59316] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 8, NULL <unfinished ...>
[pid 59315] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 7, NULL <unfinished ...>
[pid 59314] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 6, NULL <unfinished ...>
[pid 59313] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 4, NULL <unfinished ...>
[pid 59312] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 3, NULL <unfinished ...>
[pid 59311] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 1, NULL <unfinished ...>
[pid 59310] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 5, NULL <unfinished ...>
[pid 59309] futex(0x55fbecf740dc, FUTEX_WAIT_PRIVATE, 2, NULL <unfinished ...>
[pid 59308] futex(0x7f8263ba79d0, FUTEX_WAIT, 59309, NULL <unfinished ...>
[pid 59355] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59354] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59353] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59352] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59351] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59350] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59349] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59348] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59347] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59346] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59345] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59344] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59343] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59341] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59340] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59323] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59322] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59321] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59320] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59319] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59318] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59317] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59316] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59315] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59314] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59313] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59312] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59311] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
[pid 59310] <... futex resumed> ) = -1 EAGAIN (Resource temporarily unavailable)
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