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<div dir="auto">IIRC, there is one issue with that, is that IO load is considered a CPU load, so on busy storage servers you get throttling with almost free CPU. I may be wrong that load is calculated from loadavg, which is a different story at all, as it indicates the number of processes which are ready to consume the CPU time, including those waiting for IOs to complete, but that is what my mind recalls.</div><div dir="auto"><br></div><div dir="auto">I easily get loadavg of 128 on iscsi storage servers with almost free CPU, no thermal reaction at all.</div><div dir="auto"><br></div><div dir="auto">Best,</div><div dir="auto">Vlad</div><div dir='auto'><br></div>
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<div dir="auto">On February 5, 2024 19:22:11 Ken Gaillot <kgaillot@redhat.com> wrote:</div>
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<div dir="auto">On Mon, 2024-02-05 at 18:08 +0800, hywang via Users wrote:</div>
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<div dir="auto">hello, everyone:</div>
<div dir="auto">Is there any way to disable pacemaker throttle mode. If there is,</div>
<div dir="auto">where to find it?</div>
<div dir="auto">Thanks!</div>
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<div dir="auto">You can influence it via the load-threshold and node-action-limit</div>
<div dir="auto">cluster options.</div>
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<div dir="auto">The cluster throttles when CPU usage approaches load-threshold</div>
<div dir="auto">(defaulting to 80%), and limits the number of simultaneous actions on a</div>
<div dir="auto">node to node-action-limit (defaulting to twice the number of cores).</div>
<div dir="auto"><br></div>
<div dir="auto">The node action limit can be overridden per node by setting the</div>
<div dir="auto">PCMK_node_action_limit environment variable (typically in</div>
<div dir="auto">/etc/sysconfig/pacemaker, /etc/default/pacemaker, etc. depending on</div>
<div dir="auto">distro).</div>
<div dir="auto">-- </div>
<div dir="auto">Ken Gaillot <kgaillot@redhat.com></div>
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<div dir="auto">_______________________________________________</div>
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<div dir="auto">https://lists.clusterlabs.org/mailman/listinfo/users</div>
<div dir="auto"><br></div>
<div dir="auto">ClusterLabs home: https://www.clusterlabs.org/</div>
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