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Linux 6.16 Will Now Conveniently Report Hard/Soft Lockups & RCU Stall Counts
A very convenient addition to Linux 6.16 for system administrators is reporting to user-space via sysfs counters for the number of hard and soft lock-ups as well as RCU stalls.
A very convenient addition to Linux 6.16 for system administrators is reporting to user-space via sysfs counters for the number of hard and soft lock-ups as well as RCU stalls. All of these counters are useful for monitoring tools to detect whether the machine is healthy. These handy/sys/kernel/hardlockup_count,/sys/kernel/softlockup_count and/sys/kernel/rcu_stall_count counters were added via the non-MM pull for Linux 6.16.
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