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On 19 Jul 2007 at 10:14, Christian Parpart wrote: |
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> Hi all, |
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> |
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> I just migrated a standard gentoo/linux to a hardened profile including |
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> hardened-sources with grsecurity enabled and PaX-disabled. |
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> |
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> Well, it is basically used as a mySQL server, however, we do a biig sql db |
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> import once a week to operate on it. the import took about 12 hours. |
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> but now, using the hardened sourced and the hardened profile built system it |
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> really taked about 24+ hours. |
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> |
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> this really confuses me. can it be because of the extra validations the |
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> kernel-/userspace has to perform? |
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to decide where the extra time went, you should create a smaller |
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test case to reproduce the slowdown (something that runs, say, on |
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the order of a few minutes, not half a day) then do some profiling |
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with oprofile: the 100% overhead will stick out and we can investigate |
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further. |
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-- |
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