Electronic device and computing system including same
As one aspect of the present disclosure, an electronic device is disclosed. The device may include: a volatile memory device; and a controller configured to be connected with a host processor and the volatile memory device, wherein the controller may be further configured to receive a swap-out request for first data in pages from the host processor, generate first compressed data by compressing the first data in response to the swap-out request, and store the first compressed data in the volatile memory device.
1. An electronic device for compressing and storing data, comprising:
a volatile memory device comprising a first area defined and managed as a compressed memory pool and a second area defined and managed as a temporary memory pool, the second area being different from the first area; and
a controller configured to be connected with a host processor and the volatile memory device,
wherein the controller is further configured to:
receive first data in pages and a swap-out request for the first data from the host processor,
store the first data in a first temporary buffer in the temporary memory pool,
generate first compressed data by compressing the first data in response to the swap-out request,
store the first compressed data in a second temporary buffer in the temporary memory pool,
determine a size of the first compressed data in the second temporary buffer of the temporary memory pool,
allocate the size of the first compressed data in the second temporary buffer in a storage area of the compressed memory pool of the volatile memory device,
store the first compressed data stored in the second temporary buffer in the storage area of the compressed memory pool,
record a location of the storage area in metadata of the first data, and
notify the host processor of completion of processing of the swap-out request,
wherein a size of the allocated storage area of the compressed memory pool corresponds to the size of the first compressed data in the second temporary buffer of the temporary memory pool.
2. The electronic device of claim 1 , wherein the controller is further configured to divide and manage the volatile memory device into the compressed memory pool and the temporary memory pool.
3. The electronic device of claim 1 , wherein the controller is further configured to:
receive a swap-in request for second data in pages from the host processor,
generate decompressed data by decompressing second compressed data in which the second data is compressed in response to the swap-in request, and
transfer the decompressed data to the host processor.
4. The electronic device of claim 3 , wherein the controller is further configured to:
store the decompressed data in a third temporary buffer of a page size in the temporary memory pool, and
transfer the decompressed data stored in the third temporary buffer to the host processor.
5. The electronic device of claim 4 , wherein the controller is further configured to:
notify the host processor of completion of processing of the swap-in request, and
initialize metadata of the second data.
6. The electronic device of claim 1 , wherein the controller comprises:
a swap controller configured to request allocation of a memory space of the volatile memory device based on page information on the first data included in the swap-out request and control compression of the first data;
a memory manager configured to secure an empty space in the volatile memory device according to a determination of the swap controller; and
a compression and decompression module configured to compress the first data according to the determination of the swap controller.
7. The electronic device of claim 6 , wherein the controller further comprises:
a direct memory access (DMA) module configured to receive data to be swapped out from the host processor or transmit data to be swapped in to the host processor by using a predetermined protocol.
8. The electronic device of claim 6 , wherein the controller further comprises:
a cache memory configured to store data that has ever been accessed or is expected to be accessed; and
a memory controller configured to be connected with the volatile memory device and the cache memory.
9. The electronic device of claim 3 , wherein the controller comprises:
a swap controller configured to identify a storage location of the second compressed data in the volatile memory device based on page information on the second data included in the swap-in request and metadata of the second data, and control decompression of the second compressed data;
a memory manager configured to secure an empty space in the volatile memory device according to a determination of the swap controller; and
a compression and decompression module configured to decompress the second compressed data according to the determination of the swap controller.
10. The electronic device of claim 1 , wherein the controller is further configured to:
transfer the size of the first compressed data to the host processor,
receive an address where the first compressed data is to be stored from the host processor, and
store the first compressed data at the received address.
11. The electronic device of claim 1 , wherein the controller is further configured to:
determine cold data out of data stored in the compressed memory pool in the volatile memory device, and
transmit the cold data to a non-volatile storage device configured to be connected to the controller.
12. The electronic device of claim 1 , wherein the controller is further configured to:
determine cold data out of data stored in the compressed memory pool in the volatile memory device,
generate decompressed data by decompressing the cold data, and
transmit the decompressed data to a non-volatile storage device configured to be connected to the controller.
13. The electronic device of claim 1 , wherein the controller is configured to be connected with an external electronic device, and
the controller is further configured to receive a swap-out request for third data in pages from the external electronic device, generate third compressed data by compressing the third data in response to the swap-out request for the third data, and store the third compressed data in the volatile memory device.
14. The electronic device of claim 1 , wherein the controller is configured to be connected with an external electronic device, and
the controller is further configured to receive a swap-in request for fourth data in pages from the external electronic device, generate decompressed data by decompressing fourth compressed data in which the fourth data is compressed in response to the swap-in request, and transfer the decompressed data to the external electronic device.
15. A computing system comprising:
a host processor; and
an electronic device,
wherein the electronic device comprises:
a volatile memory device comprising a first area defined and managed as a compressed memory pool and a second area defined and managed as a temporary memory pool, the second area being different from the first area; and
a controller configured to be connected with the host processor and the volatile memory device,
wherein the controller is further configured to:
receive first data in pages and a swap-out request for the first data from the host processor,
generate first compressed data by compressing the first data in response to the swap-out request,
store the first compressed data in a second temporary buffer in the temporary memory pool,
determine a size of the first compressed data in the second temporary buffer of the temporary memory pool,
allocate the size of the first compressed data in the second temporary buffer in a storage area of the compressed memory pool of the volatile memory device,
store the first compressed data stored in the second temporary buffer in the storage area of the compressed memory pool,
record a location of the storage area in metadata of the first data, and
notify the host processor of completion of processing of the swap-out request,
wherein a size of the allocated storage area of the compressed memory pool corresponds to the size of the first compressed data in the second temporary buffer of the temporary memory pool.