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Richard Alpe
1f372dffe6
Add vm.conf with sysctl parameters optimized for embedded network devices 512MB-8GB of memory. Focus on fast recovery and determinism. - Panic on OOM - Aggressive dirty page writeback - Increased watermark scale factor for proactive reclaim Includes tuning guide documentation for alternative scenarios. Signed-off-by: Richard Alpe <richard@bit42.se>
24 lines
756 B
Plaintext
24 lines
756 B
Plaintext
# Memory and OOM tuning for embedded network devices
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# Optimized for systems with 512MB-4GB RAM
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# Target: Fast and deterministic OOM behavior
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# OOM Behavior
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# Panic on OOM for fast system reset and recovery
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vm.panic_on_oom=1
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# Dirty Page Writeback
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# Limit dirty pages to 10% of RAM before blocking writers
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# Start background writeback at 5% to prevent accumulation
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vm.dirty_ratio=10
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vm.dirty_background_ratio=5
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# Writeback Timing
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# Expire dirty pages after 10 seconds (1000 centiseconds)
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# Ensures quick flushing on limited-memory systems
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vm.dirty_expire_centisecs=1000
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# Memory Watermarks
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# Increase distance between low/high watermarks for earlier reclaim
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# Maintains larger free memory buffer proactively (default: 10)
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vm.watermark_scale_factor=150
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