公开(公告)号：US20190095490A1

公开(公告)日：2019-03-28

申请号：US16206595

申请日：2018-11-30

Applicant: Pure Storage, Inc.

Inventor： John Colgrove ,  Ethan L. Miller ,  Neil Amar Vachharajani ,  Feng Wang

IPC: G06F17/30

Abstract: Methods and apparatus for determining if a value is stored in a hash table is provided. The method includes breaking the value into address bits, prefix bits, and signature bits. The method includes determining a container in a compressed index at an address specified by the address bits, the container comprised of a prefix table with bits set corresponding to the prefix bits determined by aggregate values associated with the container and a signature table containing the signature bits determined by the aggregate values associated with the container. The method includes determining a result based on a function of the prefix and signature tables and the determined prefix and signature bits.

公开(公告)号：US11249999B2

公开(公告)日：2022-02-15

申请号：US16206595

申请日：2018-11-30

Applicant: Pure Storage, Inc.

Inventor： John Colgrove ,  Ethan L. Miller ,  Neil Amar Vachharajani ,  Feng Wang

IPC: G06F16/2455 ,  G06F16/22

Abstract: Methods and apparatus for determining if a value is stored in a hash table is provided. The method includes breaking the value into address bits, prefix bits, and signature bits. The method includes determining a container in a compressed index at an address specified by the address bits, the container comprised of a prefix table with bits set corresponding to the prefix bits determined by aggregate values associated with the container and a signature table containing the signature bits determined by the aggregate values associated with the container. The method includes determining a result based on a function of the prefix and signature tables and the determined prefix and signature bits.