Resource starvation when QTS opened for long period

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paternoster
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Registrován: 05 led 2022, 16:38
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Resource starvation when QTS opened for long period

Příspěvek od paternoster »

Warning: having opened QTS(5) for long periods (>4 hours*) leads to resource starvation. With no return do previous state. It seems no more new processes can be spawned. _thttpd are suspect beacause of more than hundred processes (in zombie state) and probably occupy the maximum allowed number of existing processes and prevent creating new processes. Sshd becomes paralyzed (because it forks) and QTS HTTP(s) server, but not regular Web server. Unresponsivity at 445(smb), 22, 8080+8443 port has same signature: it replies by SYN+ACK, replies with ACK on data sent to socket but never replies with any data. Sometimes replies with RST - only on 8443 port which is non-QTS Web Server at HTTPS


*: for 1GB RAM . On 1GB RAM model. (Unable to analyze if memory amount limited or process count limited)
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