문서 편집 권한이 없습니다. 다음 이유를 확인해주세요: 요청한 명령은 다음 권한을 가진 사용자에게 제한됩니다: 사용자. 문서의 원본을 보거나 복사할 수 있습니다. [[분류: 시스템 벤치마크]] == Stroage Latency Comparison == <syntaxhighlight lang="c" line> L1 cache reference 0.5 ns Branch mispredict 5 ns L2 cache reference 7 ns 14x L1 cache Mutex lock/unlock 25 ns getpid 50 ns Main memory reference 100 ns 20x L2 cache, 200x L1 cache Compress 1K bytes with Zippy 3,000 ns 3 us Send 1K bytes over 1 Gbps network 10,000 ns 10 us Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD Read 1 MB sequentially from memory 250,000 ns 250 us Round trip within same datacenter 500,000 ns 500 us Read 1 MB sequentially from SSD* 1,000,000 ns 1,000 us 1 ms ~1GB/sec SSD, 4X memory Disk seek 10,000,000 ns 10,000 us 10 ms 20x datacenter roundtrip Read 1 MB sequentially from disk 20,000,000 ns 20,000 us 20 ms 80x memory, 20X SSD Send packet CA->Netherlands->CA 150,000,000 ns 150,000 us 150 ms </syntaxhighlight> == Instructions == <syntaxhighlight lang="c" line> MOV 1 cycles JMP (Short) 1 cycles JMP (Far) 16-20 cycles CALL (Far) 16-22 cycles CALL (Near) 3 cycles INT 33 cycles IRET 32 cycles CLI 8-9 cycles STI 16-17 cycles RDTSC 5 cycles </syntaxhighlight> == 참고 == # https://gist.github.com/jboner/2841832/forks # https://www.agner.org/optimize/instruction_tables.pdf Latency 101 문서로 돌아갑니다.