Fabian
20 lines
701 B
Bash
20 lines
701 B
Bash
#!/bin/bash
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# Find the busy thread (the one eating CPU)
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echo "=== BUSY THREADS ==="
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for tid in $(ls /proc/15070/task/); do
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utime1=$(cat /proc/15070/task/$tid/stat 2>/dev/null | awk '{print $14}')
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sleep 1
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utime2=$(cat /proc/15070/task/$tid/stat 2>/dev/null | awk '{print $14}')
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if [ -n "$utime1" ] && [ -n "$utime2" ]; then
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diff=$((utime2 - utime1))
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if [ "$diff" -gt 50 ]; then
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echo "Thread $tid: delta_utime=$diff (BUSY)"
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wchan=$(cat /proc/15070/task/$tid/wchan 2>/dev/null)
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echo " wchan: $wchan"
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fi
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fi
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done
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echo "=== STRACE SAMPLE (2s) ==="
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sudo timeout 2 strace -p 15070 -e trace=write,read,openat -c 2>&1 | head -30
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