Backport #80211 to 25.4: Disable CPU overload check in server settings by default

robot-clickhouse · robot-clickhouse · commit 4e09c3a287f5 · 2025-05-14T20:09:54.000Z
diff --git a/src/Core/ServerSettings.cpp b/src/Core/ServerSettings.cpp
@@ -1060,8 +1060,8 @@ The policy on how to perform a scheduling of CPU slots specified by `concurrent_
     )", 0) \
     DECLARE(Bool, storage_shared_set_join_use_inner_uuid, true, "If enabled, an inner UUID is generated during the creation of SharedSet and SharedJoin. ClickHouse Cloud only", 0) \
     DECLARE(UInt64, os_cpu_busy_time_threshold, 1'000'000, "Threshold of OS CPU busy time in microseconds (OSCPUVirtualTimeMicroseconds metric) to consider CPU doing some useful work, no CPU overload would be considered if busy time was below this value.", 0) \
-    DECLARE(Float, min_os_cpu_wait_time_ratio_to_drop_connection, 10.0, "Min ratio between OS CPU wait (OSCPUWaitMicroseconds metric) and busy (OSCPUVirtualTimeMicroseconds metric) times to consider dropping connections. Linear interpolation between min and max ratio is used to calculate the probability, the probability is 0 at this point.", 0) \
-    DECLARE(Float, max_os_cpu_wait_time_ratio_to_drop_connection, 20.0, "Max ratio between OS CPU wait (OSCPUWaitMicroseconds metric) and busy (OSCPUVirtualTimeMicroseconds metric) times to consider dropping connections. Linear interpolation between min and max ratio is used to calculate the probability, the probability is 1 at this point.", 0) \
+    DECLARE(Float, min_os_cpu_wait_time_ratio_to_drop_connection, 0, "Min ratio between OS CPU wait (OSCPUWaitMicroseconds metric) and busy (OSCPUVirtualTimeMicroseconds metric) times to consider dropping connections. Linear interpolation between min and max ratio is used to calculate the probability, the probability is 0 at this point.", 0) \
+    DECLARE(Float, max_os_cpu_wait_time_ratio_to_drop_connection, 0, "Max ratio between OS CPU wait (OSCPUWaitMicroseconds metric) and busy (OSCPUVirtualTimeMicroseconds metric) times to consider dropping connections. Linear interpolation between min and max ratio is used to calculate the probability, the probability is 1 at this point.", 0) \
 
 
 // clang-format on
