L M B E N C H 3 . 0 S U M M A R Y ------------------------------------ (Alpha software, do not distribute) Processor, Processes - times in microseconds - smaller is better ------------------------------------------------------------------------------ Host OS Mhz null null open slct sig sig fork exec sh call I/O stat clos TCP inst hndl proc proc proc --------- ------------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- discontig Linux 2.6.16- 1599 0.25 0.38 20.0 23.3 7.47 0.41 3.28 122. 644. 2961 sparsemem Linux 2.6.16- 1599 0.25 0.39 20.0 23.4 7.45 0.43 3.38 125. 655. 2951 Context switching - times in microseconds - smaller is better ------------------------------------------------------------------------- Host OS 2p/0K 2p/16K 2p/64K 8p/16K 8p/64K 16p/16K 16p/64K ctxsw ctxsw ctxsw ctxsw ctxsw ctxsw ctxsw --------- ------------- ------ ------ ------ ------ ------ ------- ------- discontig Linux 2.6.16- 1.9200 7.9500 7.9900 2.0000 5.6600 2.73000 5.46000 sparsemem Linux 2.6.16- 8.1500 17.7 17.8 5.9300 5.8500 2.83000 5.59000 *Local* Communication latencies in microseconds - smaller is better --------------------------------------------------------------------- Host OS 2p/0K Pipe AF UDP RPC/ TCP RPC/ TCP ctxsw UNIX UDP TCP conn --------- ------------- ----- ----- ---- ----- ----- ----- ----- ---- discontig Linux 2.6.16- 1.920 42.7 18.6 42.2 50.4 172.7 230.3 139. sparsemem Linux 2.6.16- 8.150 23.0 41.0 43.0 51.2 172.9 232.2 139. File & VM system latencies in microseconds - smaller is better ------------------------------------------------------------------------------- Host OS 0K File 10K File Mmap Prot Page 100fd Create Delete Create Delete Latency Fault Fault selct --------- ------------- ------ ------ ------ ------ ------- ----- ------- ----- discontig Linux 2.6.16- 44.3 35.1 157.7 51.0 17.6K 0.281 3.435 sparsemem Linux 2.6.16- 44.3 35.3 199.9 50.9 17.9K 0.244 3.403 *Local* Communication bandwidths in MB/s - bigger is better ----------------------------------------------------------------------------- Host OS Pipe AF TCP File Mmap Bcopy Bcopy Mem Mem UNIX reread reread (libc) (hand) read write --------- ------------- ---- ---- ---- ------ ------ ------ ------ ---- ----- discontig Linux 2.6.16- 1061 224. 196. 1833.5 446.0 408.4 203.2 424. 289.2 sparsemem Linux 2.6.16- 1000 224. 193. 1834.4 445.4 408.4 203.8 424. 287.9