Inline SNMP Backend doesn't work anymore

CMK version: Checkmk Enterprise Edition 2.1.0p19
OS version: Ubuntu 22.04.1 LTS

Error message: CMC Process hangs with 100% CPU, no SNMP requests send.

Hello,

since a few days we have a problem with the Inline SNMP - Backend. We monitor around 200 Hosts (mainly switches / routes) with SNMP since years without problems. But now, after a reboot of the server , we have the following problem:

  • With inline Backend the CMC process goes to 100% CPU, but no single SNMP - Request occurs (monitored with tcpdump).

  • If I change it in globale settings to “Classic” and make a “omd restart”, everything is fine.

A trace of the cmc - process generates in second a 100MB File. Each line repeating with the content below. Has anyone an idea or hint :wink:

Alex

strace -fp 1074219

strace: Process 1074219 attached with 26 threads
[pid 1074289] futex(0x7ffcedb358a0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074288] futex(0x7ffcedb35734, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074287] futex(0x7ffcedb35408, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074285] futex(0x7ffcedb35294, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074283] futex(0x7ffcedb350cc, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074281] futex(0x1f811f0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074280] futex(0x194e620, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074279] futex(0x1f86f90, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074278] futex(0x1984560, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074277] futex(0x36268e0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074276] futex(0x1724320, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074275] futex(0x1f7d9a0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074274] futex(0x1f823b0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074273] futex(0x17b3900, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074272] futex(0x343a310, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074271] futex(0x4af7620, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074270] futex(0x1df4860, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074269] futex(0x1f7d910, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074268] futex(0x19a1270, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074267] futex(0x39f3fd0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074266] futex(0x1fe6f40, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074265] futex(0x3878140, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074264] futex(0x38628f0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074263] futex(0x386d030, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074262] futex(0x3872ac0, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANY <unfinished ...>
[pid 1074219] poll([{fd=22, events=POLLIN}, {fd=24, events=POLLIN}, {fd=15, events=POLLIN}, {fd=25, events=POLLIN}, {fd=30, events=POLLIN}, {fd=32, events=POLLIN}, {fd=34, events=POLLIN}, {fd=36, events=POLLIN}, {fd=37, events=POLLIN}, {fd=39, events=POLLIN}, {fd=38, events=POLLIN}, {fd=43, events=POLLIN}, {fd=42, events=POLLIN}, {fd=45, events=POLLIN}, {fd=44, events=POLLIN}, {fd=47, events=POLLIN}, {fd=46, events=POLLIN}, {fd=49, events=POLLIN}, {fd=48, events=POLLIN}, {fd=51, events=POLLIN}, {fd=50, events=POLLIN}, {fd=53, events=POLLIN}, {fd=52, events=POLLIN}, {fd=55, events=POLLIN}, {fd=54, events=POLLIN}, {fd=57, events=POLLIN}, {fd=56, events=POLLIN}, {fd=59, events=POLLIN}, {fd=58, events=POLLIN}, {fd=61, events=POLLIN}, {fd=60, events=POLLIN}, {fd=63, events=POLLIN}, ...], 132, 401) = 55 ([{fd=45, revents=POLLIN}, {fd=47, revents=POLLIN}, {fd=49, revents=POLLIN}, {fd=51, revents=POLLIN}, {fd=53, revents=POLLIN}, {fd=55, revents=POLLIN}, {fd=57, revents=POLLIN}, {fd=59, revents=POLLIN}, {fd=61, revents=POLLIN}, {fd=63, revents=POLLIN}, {fd=65, revents=POLLIN}, {fd=67, revents=POLLIN}, {fd=69, revents=POLLIN}, {fd=71, revents=POLLIN}, {fd=73, revents=POLLIN}, {fd=75, revents=POLLIN}, {fd=77, revents=POLLIN}, {fd=79, revents=POLLIN}, {fd=81, revents=POLLIN}, {fd=83, revents=POLLIN}, {fd=85, revents=POLLIN}, {fd=87, revents=POLLIN}, {fd=89, revents=POLLIN}, {fd=91, revents=POLLIN}, {fd=93, revents=POLLIN}, {fd=95, revents=POLLIN}, {fd=97, revents=POLLIN}, {fd=99, revents=POLLIN}, {fd=101, revents=POLLIN}, {fd=103, revents=POLLIN}, {fd=105, revents=POLLIN}, {fd=107, revents=POLLIN}, ...])
[pid 1074219] poll([{fd=22, events=POLLIN}, {fd=24, events=POLLIN}, {fd=15, events=POLLIN}, {fd=25, events=POLLIN}, {fd=30, events=POLLIN}, {fd=32, events=POLLIN}, {fd=34, events=POLLIN}, {fd=36, events=POLLIN}, {fd=37, events=POLLIN}, {fd=39, events=POLLIN}, {fd=38, events=POLLIN}, {fd=43, events=POLLIN}, {fd=42, events=POLLIN}, {fd=45, events=POLLIN}, {fd=44, events=POLLIN}, {fd=47, events=POLLIN}, {fd=46, events=POLLIN}, {fd=49, events=POLLIN}, {fd=48, events=POLLIN}, {fd=51, events=POLLIN}, {fd=50, events=POLLIN}, {fd=53, events=POLLIN}, {fd=52, events=POLLIN}, {fd=55, events=POLLIN}, {fd=54, events=POLLIN}, {fd=57, events=POLLIN}, {fd=56, events=POLLIN}, {fd=59, events=POLLIN}, {fd=58, events=POLLIN}, {fd=61, events=POLLIN}, {fd=60, events=POLLIN}, {fd=63, events=POLLIN}, ...], 132, 398) = 55 ([{fd=45, revents=POLLIN}, {fd=47, revents=POLLIN}, {fd=49, revents=POLLIN}, {fd=51, revents=POLLIN}, {fd=53, revents=POLLIN}, {fd=55, revents=POLLIN}, {fd=57, revents=POLLIN}, {fd=59, revents=POLLIN}, {fd=61, revents=POLLIN}, {fd=63, revents=POLLIN}, {fd=65, revents=POLLIN}, {fd=67, revents=POLLIN}, {fd=69, revents=POLLIN}, {fd=71, revents=POLLIN}, {fd=73, revents=POLLIN}, {fd=75, revents=POLLIN}, {fd=77, revents=POLLIN}, {fd=79, revents=POLLIN}, {fd=81, revents=POLLIN}, {fd=83, revents=POLLIN}, {fd=85, revents=POLLIN}, {fd=87, revents=POLLIN}, {fd=89, revents=POLLIN}, {fd=91, revents=POLLIN}, {fd=93, revents=POLLIN}, {fd=95, revents=POLLIN}, {fd=97, revents=POLLIN}, {fd=99, revents=POLLIN}, {fd=101, revents=POLLIN}, {fd=103, revents=POLLIN}, {fd=105, revents=POLLIN}, {fd=107, revents=POLLIN}, ...])
[pid 1074219] poll([{fd=22, events=POLLIN}, {fd=24, events=POLLIN}, {fd=15, events=POLLIN}, {fd=25, events=POLLIN}, {fd=30, events=POLLIN}, {fd=32, events=POLLIN}, {fd=34, events=POLLIN}, {fd=36, events=POLLIN}, {fd=37, events=POLLIN}, {fd=39, events=POLLIN}, {fd=38, events=POLLIN}, {fd=43, events=POLLIN}, {fd=42, events=POLLIN}, {fd=45, events=POLLIN}, {fd=44, events=POLLIN}, {fd=47, events=POLLIN}, {fd=46, events=POLLIN}, {fd=49, events=POLLIN}, {fd=48, events=POLLIN}, {fd=51, events=POLLIN}, {fd=50, events=POLLIN}, {fd=53, events=POLLIN}, {fd=52, events=POLLIN}, {fd=55, events=POLLIN}, {fd=54, events=POLLIN}, {fd=57, events=POLLIN}, {fd=56, events=POLLIN}, {fd=59, events=POLLIN}, {fd=58, events=POLLIN}, {fd=61, events=POLLIN}, {fd=60, events=POLLIN}, {fd=63, events=POLLIN}, ...], 132, 398) = 55 ([{fd=45, revents=POLLIN}, {fd=47, revents=POLLIN}, {fd=49, revents=POLLIN}, {fd=51, revents=POLLIN}, {fd=53, revents=POLLIN}, {fd=55, revents=POLLIN}, {fd=57, revents=POLLIN}, {fd=59, revents=POLLIN}, {fd=61, revents=POLLIN}, {fd=63, revents=POLLIN}, {fd=65, revents=POLLIN}, {fd=67, revents=POLLIN}, {fd=69, revents=POLLIN}, {fd=71, revents=POLLIN}, {fd=73, revents=POLLIN}, {fd=75, revents=POLLIN}, {fd=77, revents=POLLIN}, {fd=79, revents=POLLIN}, {fd=81, revents=POLLIN}, {fd=83, revents=POLLIN}, {fd=85, revents=POLLIN}, {fd=87, revents=POLLIN}, {fd=89, revents=POLLIN}, {fd=91, revents=POLLIN}, {fd=93, revents=POLLIN}, {fd=95, revents=POLLIN}, {fd=97, revents=POLLIN}, {fd=99, revents=POLLIN}, {fd=101, revents=POLLIN}, {fd=103, revents=POLLIN}, {fd=105, revents=POLLIN}, {fd=107, revents=POLLIN}, ...])
[pid 1074219] poll([{fd=22, events=POLLIN}, {fd=24, events=POLLIN}, {fd=15, events=POLLIN}, {fd=25, events=POLLIN}, {fd=30, events=POLLIN}, {fd=32, events=POLLIN}, {fd=34, events=POLLIN}, {fd=36, events=POLLIN}, {fd=37, events=POLLIN}, {fd=39, events=POLLIN}, {fd=38, events=POLLIN}, {fd=43, events=POLLIN}, {fd=42, events=POLLIN}, {fd=45, events=POLLIN}, {fd=44, events=POLLIN}, {fd=47, events=POLLIN}, {fd=46, events=POLLIN}, {fd=49, events=POLLIN}, {fd=48, events=POLLIN}, {fd=51, events=POLLIN}, {fd=50, events=POLLIN}, {fd=53, events=POLLIN}, {fd=52, events=POLLIN}, {fd=55, events=POLLIN}, {fd=54, events=POLLIN}, {fd=57, events=POLLIN}, {fd=56, events=POLLIN}, {fd=59, events=POLLIN}, {fd=58, events=POLLIN}, {fd=61, events=POLLIN}, {fd=60, events=POLLIN}, {fd=63, events=POLLIN}, ...], 132, 398) = 55 ([{fd=45, revents=POLLIN}, {fd=47, revents=POLLIN}, {fd=49, revents=POLLIN}, {fd=51, revents=POLLIN}, {fd=53, revents=POLLIN}, {fd=55, revents=POLLIN}, {fd=57, revents=POLLIN}, {fd=59, revents=POLLIN}, {fd=61, revents=POLLIN}, {fd=63, revents=POLLIN}, {fd=65, revents=POLLIN}, {fd=67, revents=POLLIN}, {fd=69, revents=POLLIN}, {fd=71, revents=POLLIN}, {fd=73, revents=POLLIN}, {fd=75, revents=POLLIN}, {fd=77, revents=POLLIN}, {fd=79, revents=POLLIN}, {fd=81, revents=POLLIN}, {fd=83, revents=POLLIN}, {fd=85, revents=POLLIN}, {fd=87, revents=POLLIN}, {fd=89, revents=POLLIN}, {fd=91, revents=POLLIN}, {fd=93, revents=POLLIN}, {fd=95, revents=POLLIN}, {fd=97, revents=POLLIN}, {fd=99, revents=POLLIN}, {fd=101, revents=POLLIN}, {fd=103, revents=POLLIN}, {fd=105, revents=POLLIN}, {fd=107, revents=POLLIN}, ...])
[pid 1074219] poll([{fd=22, events=POLLIN}, {fd=24, events=POLLIN}, {fd=15, events=POLLIN}, {fd=25, events=POLLIN}, {fd=30, events=POLLIN}, {fd=32, events=POLLIN}, {fd=34, events=POLLIN}, {fd=36, events=POLLIN}, {fd=37, events=POLLIN}, {fd=39, events=POLLIN}, {fd=38, events=POLLIN}, {fd=43, events=POLLIN}, {fd=42, events=POLLIN}, {fd=45, events=POLLIN}, {fd=44, events=POLLIN}, {fd=47, events=POLLIN}, {fd=46, events=POLLIN}, {fd=49, events=POLLIN}, {fd=48, events=POLLIN}, {fd=51, events=POLLIN}, {fd=50, events=POLLIN}, {fd=53, events=POLLIN}, {fd=52, events=POLLIN}, {fd=55, events=POLLIN}, {fd=54, events=POLLIN}, {fd=57, events=POLLIN}, {fd=56, events=POLLIN}, {fd=59, events=POLLIN}, {fd=58, events=POLLIN}, {fd=61, events=POLLIN}, {fd=60, events=POLLIN}, {fd=63, events=POLLIN}, ...], 132, 397) = 55 ([{fd=45, revents=POLLIN}, {fd=47, revents=POLLIN}, {fd=49, revents=POLLIN}, {fd=51, revents=POLLIN}, {fd=53, revents=POLLIN}, {fd=55, revents=POLLIN}, {fd=57, revents=POLLIN}, {fd=59, revents=POLLIN}, {fd=61, revents=POLLIN}, {fd=63, revents=POLLIN}, {fd=65, revents=POLLIN}, {fd=67, revents=POLLIN}, {fd=69, revents=POLLIN}, {fd=71, revents=POLLIN}, {fd=73, revents=POLLIN}, {fd=75, revents=POLLIN}, {fd=77, revents=POLLIN}, {fd=79, revents=POLLIN}, {fd=81, revents=POLLIN}, {fd=83, revents=POLLIN}, {fd=85, revents=POLLIN}, {fd=87, revents=POLLIN}, {fd=89, revents=POLLIN}, {fd=91, revents=POLLIN}, {fd=93, revents=POLLIN}, {fd=95, revents=POLLIN}, {fd=97, revents=POLLIN}, {fd=99, revents=POLLIN}, {fd=101, revents=POLLIN}, {fd=103, revents=POLLIN}, {fd=105, revents=POLLIN}, {fd=107, revents=POLLIN}, ...])
[pid 1074219] poll([{fd=22, events=POLLIN}, {fd=24, events=POLLIN}, {fd=15, events=POLLIN}, {fd=25, events=POLLIN}, {fd=30, events=POLLIN}, {fd=32, events=POLLIN}, {fd=34, events=POLLIN}, {fd=36, events=POLLIN}, {fd=37, events=POLLIN}, {fd=39, events=POLLIN}, {fd=38, events=POLLIN}, {fd=43, events=POLLIN}, {fd=42, events=POLLIN}, {fd=45, events=POLLIN}, {fd=44, events=POLLIN}, {fd=47, events=POLLIN}, {fd=46, events=POLLIN}, {fd=49, events=POLLIN}, {fd=48, events=POLLIN}, {fd=51, events=POLLIN}, {fd=50, events=POLLIN}, {fd=53, events=POLLIN}, {fd=52, events=POLLIN}, {fd=55, events=POLLIN}, {fd=54, events=POLLIN}, {fd=57, events=POLLIN}, {fd=56, events=POLLIN}, {fd=59, events=POLLIN}, {fd=58, events=POLLIN}, {fd=61, events=POLLIN}, {fd=60, events=POLLIN}, {fd=63, events=POLLIN}, ...], 132, 397) = 55 ([{fd=45, revents=POLLIN}, {fd=47, revents=POLLIN}, {fd=49, revents=POLLIN}, {fd=51, revents=POLLIN}, {fd=53, revents=POLLIN}, {fd=55, revents=POLLIN}, {fd=57, revents=POLLIN}, {fd=59, revents=POLLIN}, {fd=61, revents=POLLIN}, {fd=63, revents=POLLIN}, {fd=65, revents=POLLIN}, {fd=67, revents=POLLIN}, {fd=69, revents=POLLIN}, {fd=71, revents=POLLIN}, {fd=73, revents=POLLIN}, {fd=75, revents=POLLIN}, {fd=77, revents=POLLIN}, {fd=79, revents=POLLIN}, {fd=81, revents=POLLIN}, {fd=83, revents=POLLIN}, {fd=85, revents=POLLIN}, {fd=87, revents=POLLIN}, {fd=89, revents=POLLIN}, {fd=91, revents=POLLIN}, {fd=93, revents=POLLIN}, {fd=95, revents=POLLIN}, {fd=97, revents=POLLIN}, {fd=99, revents=POLLIN}, {fd=101, revents=POLLIN}, {fd=103, revents=POLLIN}, {fd=105, revents=POLLIN}, {fd=107, revents=POLLIN}, ...])
[pid 1074219] poll([{fd=22, events=POLLIN}, {fd=24, events=POLLIN}, {fd=15, events=POLLIN}, {fd=25, events=POLLIN}, {fd=30, events=POLLIN}, {fd=32, events=POLLIN}, {fd=34, events=POLLIN}, {fd=36, events=POLLIN}, {fd=37, events=POLLIN}, {fd=39, events=POLLIN}, {fd=38, events=POLLIN}, {fd=43, events=POLLIN}, {fd=42, events=POLLIN}, {fd=45, events=POLLIN}, {fd=44, events=POLLIN}, {fd=47, events=POLLIN}, {fd=46, events=POLLIN}, {fd=49, events=POLLIN}, {fd=48, events=POLLIN}, {fd=51, events=POLLIN}, {fd=50, events=POLLIN}, {fd=53, events=POLLIN}, {fd=52, events=POLLIN}, {fd=55, events=POLLIN}, {fd=54, events=POLLIN}, {fd=57, events=POLLIN}, {fd=56, events=POLLIN}, {fd=59, events=POLLIN}, {fd=58, events=POLLIN}, {fd=61, events=POLLIN}, {fd=60, events=POLLIN}, {fd=63, events=POLLIN}, ...], 132, 397) = 55 ([{fd=45, revents=POLLIN}, {fd=47, revents=POLLIN}, {fd=49, revents=POLLIN}, {fd=51, revents=POLLIN}, {fd=53, revents=POLLIN}, {fd=55, revents=POLLIN}, {fd=57, revents=POLLIN}, {fd=59, revents=POLLIN}, {fd=61, revents=POLLIN}, {fd=63, revents=POLLIN}, {fd=65, revents=POLLIN}, {fd=67, revents=POLLIN}, {fd=69, revents=POLLIN}, {fd=71, revents=POLLIN}, {fd=73, revents=POLLIN}, {fd=75, revents=POLLIN}, {fd=77, revents=POLLIN}, {fd=79, revents=POLLIN}, {fd=81, revents=POLLIN}, {fd=83, revents=POLLIN}, {fd=85, revents=POLLIN}, {fd=87, revents=POLLIN}, {fd=89, revents=POLLIN}, {fd=91, revents=POLLIN}, {fd=93, revents=POLLIN}, {fd=95, revents=POLLIN}, {fd=97, revents=POLLIN}, {fd=99, revents=POLLIN}, {fd=101, revents=POLLIN}, {fd=103, revents=POLLIN}, {fd=105, revents=POLLIN}, {fd=107, revents=POLLIN}, ...])
[pid 1074219] poll([{fd=22, events=POLLIN}, {fd=24, events=POLLIN}, {fd=15, events=POLLIN}, {fd=25, events=POLLIN}, {fd=30, events=POLLIN}, {fd=32, events=POLLIN}, {fd=34, events=POLLIN}, {fd=36, events=POLLIN}, {fd=37, events=POLLIN}, {fd=39, events=POLLIN}, {fd=38, events=POLLIN}, {fd=43, events=POLLIN}, {fd=42, events=POLLIN}, {fd=45, events=POLLIN}, {fd=44, events=POLLIN}, {fd=47, events=POLLIN}, {fd=46, events=POLLIN}, {fd=49, events=POLLIN}, {fd=48, events=POLLIN}, {fd=51, events=POLLIN}, {fd=50, events=POLLIN}, {fd=53, events=POLLIN}, {fd=52, events=POLLIN}, {fd=55, events=POLLIN}, {fd=54, events=POLLIN}, {fd=57, events=POLLIN}, {fd=56, events=POLLIN}, {fd=59, events=POLLIN}, {fd=58, events=POLLIN}, {fd=61, events=POLLIN}, {fd=60, events=POLLIN}, {fd=63, events=POLLIN}, ...], 132, 396) = 55 ([{fd=45, revents=POLLIN}, {fd=47, revents=POLLIN}, {fd=49, revents=POLLIN}, {fd=51, revents=POLLIN}, {fd=53, revents=POLLIN}, {fd=55, revents=POLLIN}, {fd=57, revents=POLLIN}, {fd=59, revents=POLLIN}, {fd=61, revents=POLLIN}, {fd=63, revents=POLLIN}, {fd=65, revents=POLLIN}, {fd=67, revents=POLLIN}, {fd=69, revents=POLLIN}, {fd=71, revents=POLLIN}, {fd=73, revents=POLLIN}, {fd=75, revents=POLLIN}, {fd=77, revents=POLLIN}, {fd=79, revents=POLLIN}, {fd=81, revents=POLLIN}, {fd=83, revents=POLLIN}, {fd=85, revents=POLLIN}, {fd=87, revents=POLLIN}, {fd=89, revents=POLLIN}, {fd=91, revents=POLLIN}, {fd=93, revents=POLLIN}, {fd=95, revents=POLLIN}, {fd=97, revents=POLLIN}, {fd=99, revents=POLLIN}, {fd=101, revents=POLLIN}, {fd=103, revents=POLLIN}, {fd=105, revents=POLLIN}, {fd=107, revents=POLLIN}, ...])

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