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After a long discussion with a friend I changed some kernel-configs: |
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* Large Receive Offload (INET_LRO) disabled. |
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* Changed allocator from SLUB to SLAB |
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These two made the system much more stable, much less allocation error |
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messages, but not yet stable enough (still some freezes) |
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* Increased /proc/sys/vm/min_free_kbytes. was at 8065, changed it to 16000 |
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which made the page allocations nearly disappear at all, with 20000 I |
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didn't find any message after having copied more than 500GB. But still one |
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freeze :-( |
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* Tried kernel boot parameter "noapic". Copied 500GB without any problem. No |
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freeze, no page alloc error, no transmit timeout in rtl8169 driver. |
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With this configuration I consider the problem as solved. |
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Greetings and thanks to all who answered me |
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Alex |