公开(公告)号：US12019542B2

公开(公告)日：2024-06-25

申请号：US17882802

申请日：2022-08-08

Applicant: Google LLC

Inventor： Abhishek Agarwal ,  Jiazhen Zheng ,  Srinivas Vaduvatha ,  Weihuang Wang ,  Hugh McEvoy Walsh ,  Weiwei Jiang ,  Ajay Venkatesan ,  Prashant R. Chandra

IPC: G06F12/0802

CPC classification number: G06F12/0802 ,  G06F2212/60

Abstract: Aspects of the disclosure are directed to high performance connection cache eviction for reliable transport protocols in data center networking. Connection priorities for connection entries are determined to store the connection entries in a cache based on their connection priority. During cache eviction, the connection entries with a lowest connection priority are evicted from the cache. Cache eviction can be achieved with low latency at a high rate.

公开(公告)号：US11914647B2

公开(公告)日：2024-02-27

申请号：US17833126

申请日：2022-06-06

Applicant: Google LLC

Inventor： Weiwei Jiang ,  Srinivas Vaduvatha ,  Prashant R. Chandra ,  Jiazhen Zheng ,  Hugh McEvoy Walsh ,  Weihuang Wang ,  Abhishek Agarwal

IPC: G06F16/901 ,  G06F3/06

CPC classification number: G06F16/9014 ,  G06F3/0613 ,  G06F3/0659 ,  G06F3/0673 ,  G06F16/9017

Abstract: A hash table system, including a plurality of hash tables, associated with respective hash functions, for storing key-value pairs; an overflow memory for storing key-value pairs moved from the hash tables due to collision; and an arbiter for arbitrating among commands including update commands, match commands, and rehash commands, wherein for each system clock cycle, the arbiter selects as a selected command one of an update command, a match command, or a rehash command, and wherein the hash table system completes execution of each selected command within a bounded number of system clock cycles.

公开(公告)号：US20240045800A1

公开(公告)日：2024-02-08

申请号：US17882802

申请日：2022-08-08

Applicant: Google LLC

Inventor： Abhishek Agarwal ,  Jiazhen Zheng ,  Srinivas Vaduvatha ,  Weihuang Wang ,  Hugh McEvoy Walsh ,  Weiwei Jiang ,  Ajay Venkatesan ,  Prashant R. Chandra

IPC: G06F12/0802

CPC classification number: G06F12/0802 ,  G06F2212/60

Abstract: Aspects of the disclosure are directed to high performance connection cache eviction for reliable transport protocols in data center networking. Connection priorities for connection entries are determined to store the connection entries in a cache based on their connection priority. During cache eviction, the connection entries with a lowest connection priority are evicted from the cache. Cache eviction can be achieved with low latency at a high rate.

公开(公告)号：US20230393987A1

公开(公告)日：2023-12-07

申请号：US17834018

申请日：2022-06-07

Applicant: Google LLC

Inventor： Jiazhen Zheng ,  Srinivas Vaduvatha ,  Hugh McEvoy Walsh ,  Prashant R. Chandra ,  Abhishek Agarwal ,  Weihuang Wang ,  Weiwei Jiang

IPC: G06F12/0895 ,  G06F12/0864 ,  G06F12/121

CPC classification number: G06F12/0895 ,  G06F12/0864 ,  G06F12/121

Abstract: A packet cache system includes a cache memory allocator for receiving a memory address corresponding to a non-cache memory and allocated to a packet, and associating the memory address with a cache memory address; a hash table for storing the memory address and the cache memory address, with the memory address as a key and the cache memory address as a value; a cache memory for storing the packet at a location indicated by the cache memory address; and an eviction engine for determining one or more cached packets to remove from the cache memory and place in the non-cache memory when occupancy of the cache memory is high.

公开(公告)号：US12216587B2

公开(公告)日：2025-02-04

申请号：US18583341

申请日：2024-02-21

Applicant: Google LLC

Inventor： Jiazhen Zheng ,  Srinivas Vaduvatha ,  Hugh McEvoy Walsh ,  Prashant R. Chandra ,  Abhishek Agarwal ,  Weihuang Wang ,  Weiwei Jiang

IPC: G06F12/0895 ,  G06F12/0864 ,  G06F12/121

Abstract: A packet cache system includes a cache memory allocator for receiving a memory address corresponding to a non-cache memory and allocated to a packet, and associating the memory address with a cache memory address; a hash table for storing the memory address and the cache memory address, with the memory address as a key and the cache memory address as a value; a cache memory for storing the packet at a location indicated by the cache memory address; and an eviction engine for determining one or more cached packets to remove from the cache memory and place in the non-cache memory when occupancy of the cache memory is high.

公开(公告)号：US12164439B1

公开(公告)日：2024-12-10

申请号：US18327962

申请日：2023-06-02

Applicant: Google LLC

Inventor： Chandan Muddamsetty ,  Jiazhen Zheng ,  Weiwei Jiang ,  Shivang Ghetia ,  Abhishek Agarwal ,  Srinivas Vaduvatha

IPC: G06F12/12 ,  G06F12/123 ,  G06F12/126

Abstract: Aspects of the disclosure are directed to a packet cache eviction engine for reliable transport protocols of a network. The packet cache eviction engine can manage on-chip cache occupancy by evicting lower priority packets to off-chip memory and ensuring that higher priority packets are kept on-chip to achieve higher performance and lower latency in processing packets in the network.

公开(公告)号：US11979476B2

公开(公告)日：2024-05-07

申请号：US17961669

申请日：2022-10-07

Applicant: Google LLC

Inventor： Abhishek Agarwal ,  Weihuang Wang ,  Weiwei Jiang ,  Srinivas Vaduvatha ,  Jiazhen Zheng

IPC: H04L67/61 ,  H04L67/55

CPC classification number: H04L67/61 ,  H04L67/55

Abstract: Aspects of the disclosure are directed to a high performance connection scheduler for reliable transport protocols in data center networking. The connection scheduler can handle enqueue events, dequeue events, and update events. The connection scheduler can include a connection queue, scheduling queue, and quality of service arbiter to support scheduling a large number of connections at a high rate.

公开(公告)号：US20240403228A1

公开(公告)日：2024-12-05

申请号：US18327962

申请日：2023-06-02

Applicant: Google LLC

Inventor： Chandan Muddamsetty ,  Jiazhen Zheng ,  Weiwei Jiang ,  Shivang Ghetia ,  Abhishek Agarwal ,  Srinivas Vaduvatha

IPC: G06F12/126 ,  G06F12/123

Abstract: Aspects of the disclosure are directed to a packet cache eviction engine for reliable transport protocols of a network. The packet cache eviction engine can manage on-chip cache occupancy by evicting lower priority packets to off-chip memory and ensuring that higher priority packets are kept on-chip to achieve higher performance and lower latency in processing packets in the network.

公开(公告)号：US20240064215A1

公开(公告)日：2024-02-22

申请号：US18200074

申请日：2023-05-22

Applicant: Google LLC

Inventor： Srinivas Vaduvatha ,  Weiwei Jiang ,  Prashant Chandra ,  Opeoluwa Oladipo ,  Jiazhen Zheng ,  Hugh McEvoy Walsh ,  Weihuang Wang ,  Abhishek Agarwal

IPC: H04L69/04 ,  H03M7/30

CPC classification number: H04L69/04 ,  H03M7/70 ,  H03M7/6011

Abstract: Compressing connection state information for a network connection including receiving an input bitmap having a sequence of bits describing transmit states and receive states; partitioning the input bitmap into a plurality of equal size blocks; partitioning each of the blocks into a plurality of equal sized sectors; generating a block valid sequence indicating the blocks having at least one bit set; generating, for each block having at least one bit set, a sector information sequence, the sector information sequence indicating, for the corresponding block, the sectors that have at least one bit set and an encoding type for each sector; and generating one or more symbols by encoding each sector that has at least one bit set.

公开(公告)号：US20230394082A1

公开(公告)日：2023-12-07

申请号：US17833126

申请日：2022-06-06

Applicant: Google LLC

Inventor： Weiwei Jiang ,  Srinivas Vaduvatha ,  Prashant R. Chandra ,  Jiazhen Zheng ,  Hugh McEvoy Walsh ,  Weihuang Wang ,  Abhishek Agarwal

IPC: G06F3/06 ,  G06F16/901

CPC classification number: G06F3/0659 ,  G06F16/9014 ,  G06F16/9017 ,  G06F3/0613 ,  G06F3/0673

Abstract: A hash table system, including a plurality of hash tables, associated with respective hash functions, for storing key-value pairs; an overflow memory for storing key-value pairs moved from the hash tables due to collision; and an arbiter for arbitrating among commands including update commands, match commands, and rehash commands, wherein for each system clock cycle, the arbiter selects as a selected command one of an update command, a match command, or a rehash command, and wherein the hash table system completes execution of each selected command within a bounded number of system clock cycles.