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>> >> My website seems a bit slower since I enabled grsecurity on that |
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>> >> system. Is that typical? Is it most likely due to MPROTECT, or |
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>> >> something else? |
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>> > |
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>> > can you quantify this slowdown? and what grsec/pax features did you enable? |
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>> |
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>> I enabled the grsecurity "Gentoo (server)" profile in the hardened |
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>> kernel. |
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> |
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> ok, is PAGEEXEC enabled (and SEGMEXEC isn't) and is your cpu some P4 variant |
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> without NX support? that's about the only situation where you should see an |
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> observable slowdown, otherwise i doubt you can percieve a few % without |
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> actual measurements. so if neither is your case, it's definitely worth an |
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> investigation. |
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|
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Very close. PAGEEXEC is enabled, but so is SEGMEXEC. My CPU is a |
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P4-2.8, and I'm not sure about NX support but these are the flags: |
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fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 |
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clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc pebs bts |
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pni monitor ds_cpl cid xtpr |
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- Grant |
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