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WOW! Those differences are crazy! |
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> |
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> Please - I know benchmarking takes a lot of time - but could you check |
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> something: the behavior those fs have at what time they flush data from |
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> cache to disk is very different. Have you made sure that you measured |
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> the time it really needs? I mean the difference between: |
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> |
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> $ sync; time cp source dest |
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> and |
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> $ sync; time (cp source dest; sync) |
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> |
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> Only the last measures somewhat correctly. |
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> |
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I had noticed that there was, say, 5 seconds of disk activity after the cp |
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command complete which I assumed was buffers getting flushed, but 5 seconds |
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didnt seem that significant overall. I will run the tests as you suggest and |
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post back. Do you think btrfs (with or without compression) would be faster |
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than reiser? If so I will try that as well. |