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Modding talk:Player Guide/Troubleshooting (view source)
Revision as of 23:24, 10 October 2021
, 23:24, 10 October 2021no edit summary
:: * Process logical address space _is not shared between processes_. _Physical_ memory is, but that is mapped to processes (into their logical address space). Even 32-bit NT can address more than 4 GiB of physical RAM via PAE. If you have two 32-bit processes, they do not share a 2 GiB logical address space. Or a 3 GiB logical address space. They have their own logical address spaces. They compete for _physical_ memory, but that's true of any system.
:: * Process logical address space _is not shared between processes_. _Physical_ memory is, but that is mapped to processes (into their logical address space). Even 32-bit NT can address more than 4 GiB of physical RAM via PAE. If you have two 32-bit processes, they do not share a 2 GiB logical address space. Or a 3 GiB logical address space. They have their own logical address spaces. They compete for _physical_ memory, but that's true of any system.
:: * On 64-bit Windows, obviously the same applies. Except that if a process is flagged as `LARGEADDRESSAWARE`, it gets access to the full 4 GiB address space instead of 3, as the kernel does not need to be mapped within the 4 GiB address space (during an interrupt, the processor switches back to long mode and the kernel can access its own memory which is mapped outside of what the process is aware of).
:: * On 64-bit Windows, obviously the same applies. Except that if a process is flagged as `LARGEADDRESSAWARE`, it gets access to the full 4 GiB address space instead of 3, as the kernel does not need to be mapped within the 4 GiB address space (during an interrupt, the processor switches back to long mode and the kernel can access its own memory which is mapped outside of what the process is aware of).
:: I mean, unless we're talking about Windows 9x. Those could and would operate weirdly... but Windows NT has _never_ operated this way.
:: The reason players still see <tt>OutOfMemoryException</tt> is that the process is exhausting its logical address space. Simple as that. You can exhaust it without ever committing physical pages.
:: [[User:Ameisen|Ameisen]] ([[User talk:Ameisen|talk]]) 23:22, 10 October 2021 (UTC)
:: [[User:Ameisen|Ameisen]] ([[User talk:Ameisen|talk]]) 23:22, 10 October 2021 (UTC)