Clockwork 融资 2100 万美元实现纳秒级服务器时间同步，并推出延迟感知产品

做的是什么生意

Clockwork sells nanosecond-grade time synchronization for servers plus Latency Sensei, a product that uses trusted clocks to deliver fine-grained latency data across cloud, on-premises and hybrid environments.

启动资金：US$21M Series A (2022-03-16) led by NEA, with angel investors John Hennessy, Ram Shriram and Jerry Yang participating.

起因

The idea grew out of Stanford research by Mendel Rosenblum and Balaji Prabhakar's teams into what distributed systems could do if clocks were trustworthy. Prabhakar described servers inside data centers that could not agree even on the second, while NTP-based sync stays far from microsecond accuracy. Yilong Geng, Deepak Merugu and Prabhakar founded Clockwork, with Rosenblum as chief scientist, and built a system that measures timestamp arrival times, feeds clock offset and frequency drift into a machine learning model, and lets clocks detect and correct each other.

经过

On 2022-03-16 Clockwork announced a $21M Series A led by NEA, joined by angels John Hennessy, Ram Shriram and Jerry Yang, and launched its first product, Latency Sensei, claiming sync accuracy down to 5 nanoseconds with hardware timestamps and hundreds of nanoseconds with software timestamps. Customers already included Nasdaq, Wells Fargo and RBC. The roadmap pointed to congestion detection that would give TCP better routing hints inside data centers, and the founders argued trustworthy time could reopen time-based algorithms for database consistency, event ordering, consensus and ledgers.

可借鉴之处

深度研究洞察只有通过产品才能变成公司：Clockwork 首个产品是 Latency Sensei，并拥有具名金融客户，而不是又一篇论文。