Performance measured by lmbench on cicada.cs.yale.edu on Dec. 29, 2001 Process management ----------------------- mhz: 1693 MHz, 0.59 nanosec clock Simple system calls syscall: 0.9269 microseconds read: 1.0617 microseconds write: 0.9835 microseconds stat: 3.1276 microseconds fstat: 1.1209 microseconds open/close: 4.3539 microseconds Process Process fork+exit: 171.0252 microseconds Process fork+execve: 841.6385 microseconds Process fork+/bin/sh -c: 4307.6800 microseconds Memory ------ ./bw_mem 128m cp 134.22 723.75 ./bw_mem 128m rd 134.22 1837.32 ./bw_mem 128m wr 134.22 838.75 ./bw_pipe 922.30 MB/sec ./bw_tcp localhost 493.50 MB/sec ./bw_tcp cyndra 9.87 MB/sec File system ----------- ./lat_fs 0k 1000 1643 1419 1k 1000 516 1362 4k 1000 399 1357 10k 1000 251 1354 ./lat_fs /tmp 0k 1000 33007 251446 1k 1000 23570 173340 4k 1000 23379 172861 10k 1000 17219 123732 IO systems ---------- Select on fd's 10 fd's: 2.1389 microseconds 100 fd's: 5.6631 microseconds 250 fd's: 11.6258 microseconds 500 fd's: 20.7954 microseconds Select on tcp fd's 10 tcp fd's: 2.4570 microseconds 100 tcp fd's: 8.7383 microseconds 250 tcp fd's: 19.2836 microseconds 500 tcp fd's: 35.6711 microseconds Signal Signal handler installation: 1.274 microseconds Signal handler overhead: 3.775 microseconds Protection fault: 1.681 microseconds Network ------- ./bw_pipe 922.30 MB/sec ./bw_tcp localhost 493.50 MB/sec ./bw_tcp cyndra 9.87 MB/sec Local host UDP latency: 16.4148 microseconds TCP latency: 18.5221 microseconds RPC/tcp: 34.7739 microseconds RPC/udp latency: 31.6130 microseconds Between cicada.cs.yale.edu and cyndra.cs.yale: ./bw_tcp cyndra 9.87 MB/sec