关键词: 单程序多数据（SPMD）, 并行测控数据实时存储系统, 负载均衡, 互斥锁

Abstract:

Nowadays, the traditional serial programs for TT&C data storage system is becoming difficult to adapt to the high load task demands in the new environment of continuously increased instrumentation equipment’s numbers and data rates. In this paper, a parallel real-time TT&C data storage system framework is designed and implemented based on OpenMP and Qt with the parallel idea of SPMD（Single Program Multiple Data）. By introducing the M/M/1 queuing model, a static task partitioning algorithm is designed to balance the load between parallel threads. At the same time, a fine-grained synchronization mechanism between threads is completed for shared memory communication based on mutex locks. And the signal and slot mechanism of Qt is successfully embedded into OpenMP threads by the means of event loop, thus the good man-computer interaction capability of Qt is retained in the parallel framework. Experimental results show that the parallel framework has better scalability and real-time performance compared with the serial TT&C data storage system under high load, which can make a better use of the computing resources of the multi-core system and obtain better real-time performance.

Key words: Single Program Multiple Data（SPMD）；parallel real-time TT&C data storage system, load balance, mutex locks