Dynamic memory allocation based on workload characterization and optimization
An information handling system may include a persistent memory module and a basic input/output system (BIOS). The information handling system may be configured to: prior to initialization of an operating system, receive, at a configuration application of the BIOS, configuration information regarding the persistent memory module; in response to the configuration information, allocate a first portion of the persistent memory module to volatile system memory of the information handling system, a second portion of the persistent memory module to non-volatile storage of the information handling system, and a third portion of the persistent memory module to a dynamic memory area; and after initialization of the operating system, execute a memory manager configured to alter sizes of the first portion, the second portion, and the third portion, wherein the altering is carried out without performing a reboot of the information handling system.
1. An information handling system comprising:
a persistent memory module; and
a basic input/output system (BIOS);
wherein the information handling system is configured to:
prior to initialization of an operating system, receive, at a configuration application of the BIOS, configuration information regarding the persistent memory module;
in response to the configuration information, allocate a first portion of the persistent memory module to volatile system memory of the information handling system, a second portion of the persistent memory module to non-volatile storage of the information handling system, and a third portion of the persistent memory module to a dynamic memory area; and
after initialization of the operating system, execute a memory manager configured to alter sizes of the first portion, the second portion, and the third portion, wherein the altering is carried out without performing a reboot of the information handling system, and wherein the altering includes reallocating selected quantities of the third portion to the first portion and the second portion respectively.
2. The information handling system of claim 1 , wherein the BIOS is a Unified Extensible Firmware Interface (UEFI) BIOS.
3. The information handling system of claim 1 , wherein the configuration information received at the configuration application of the BIOS is a selection of dynamic memory allocation mode.
4. The information handling system of claim 1 , wherein the non-volatile storage is block input/output (I/O) storage.
5. The information handling system of claim 1 , wherein the first portion of the persistent memory module is allocated to Memory Mode, and the second portion of the persistent memory module is allocated to App Direct Mode.
6. The information handling system of claim 1 , wherein the memory manager is configured to use a block translation table (BTT) driver to execute a call to the BIOS to alter the sizes.
7. The information handling system of claim 6 , wherein the BIOS is configured to update a data structure associated with the persistent memory module by executing an _FIT method.
8. A method comprising:
a basic input/output system (BIOS) of an information handling system receiving, prior to initialization of an operating system, configuration information regarding a persistent memory module of the information handling system;
in response to the configuration information, the BIOS allocating a first portion of the persistent memory module to volatile system memory of the information handling system, a second portion of the persistent memory module to non-volatile storage of the information handling system, and a third portion of the persistent memory module to a dynamic memory area; and
after initialization of the operating system, the information handling system executing a memory manager configured to alter sizes of the first portion, the second portion, and the third portion, wherein the altering is carried out without performing a reboot of the information handling system, and wherein the altering includes reallocating selected quantities of the third portion to the first portion and the second portion respectively.
9. The method of claim 8 , wherein the memory manager altering the sizes is in response to a detection that usage of a particular one of the first, second, and third portions has reached a threshold usage.
10. The method of claim 8 , wherein the configuration information received at the configuration application of the BIOS is a selection of dynamic memory allocation mode.
11. The method of claim 8 , wherein the non-volatile storage is block input/output (I/O) storage.
12. The method of claim 8 , wherein the first portion of the persistent memory module is allocated to Memory Mode, and the second portion of the persistent memory module is allocated to App Direct Mode.
13. The method of claim 8 , wherein the memory manager is configured to use a block translation table (BTT) driver to execute a call to the BIOS to alter the sizes.
14. An article of manufacture comprising a non-transitory, computer-readable medium having computer-executable code thereon that is executable by an information handling system for:
a basic input/output system (BIOS) of the information handling system receiving, prior to initialization of an operating system, configuration information regarding a persistent memory module of the information handling system;
in response to the configuration information, the BIOS allocating a first portion of the persistent memory module to volatile system memory of the information handling system, a second portion of the persistent memory module to non-volatile storage of the information handling system, and a third portion of the persistent memory module to a dynamic memory area; and
after initialization of the operating system, executing a memory manager configured to alter sizes of the first portion, the second portion, and the third portion, wherein the altering is carried out without performing a reboot of the information handling system, and wherein the altering includes reallocating selected quantities of the third portion to the first portion and the second portion respectively.
15. The article of claim 14 , wherein the BIOS is a Unified Extensible Firmware Interface (UEFI) BIOS.
16. The article of claim 14 , wherein the configuration information received at the configuration application of the BIOS is a selection of dynamic memory allocation mode.
17. The article of claim 14 , wherein the non-volatile storage is block input/output (I/O) storage.
18. The article of claim 14 , wherein the first portion of the persistent memory module is allocated to Memory Mode, and the second portion of the persistent memory module is allocated to App Direct Mode.
19. The article of claim 14 , wherein the memory manager is configured to use a block translation table (BTT) driver to execute a call to the BIOS to alter the sizes.
20. The article of claim 19 , wherein the BIOS is configured to update a data structure associated with the persistent memory module by executing an _FIT method.