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syscall - What does it mean?

Definition of 'syscall'

English

Noun

(en-noun)
  • (computing) A software request for a service from the operating system kernel.
  • * 2009 , Jatinder N. D. Gupta, Sushil K. Sharma, Handbook of research on information security and assurance
  • At an assembly code level, when a process wants to make a syscall , it will load the syscall number into the EAX register
  • * 2010 , Michael Resch, Katharina Benkert, Xin Wang, High Performance Computing on Vector Systems 2010 (page 57)
  • In addition, the relatively slow scalar CPU of the SX-9 and high cost of context switches (interrupts, syscalls ) due to the huge context that needs to be stored away (like vector registers) contribute their part to the very poor UDP performance.