ericgar@pliny ~ $ tracepath google.com 1: 192.168.0.150 (192.168.0.150) 0.371ms pmtu 1500 1: 192.168.0.1 (192.168.0.1) 3.179ms 1: 192.168.0.1 (192.168.0.1) 3.263ms 2: 68.28.121.85 (68.28.121.85) 379.922ms 3: 68.28.121.91 (68.28.121.91) 424.449ms asymm 4 4: 68.28.123.55 (68.28.123.55) 163.418ms asymm 6 5: no reply 6: 68.28.127.5 (68.28.127.5) 178.967ms 7: no reply 8: 68.28.125.69 (68.28.125.69) 129.804ms 9: sl-gw20-hrs-10-0-0.sprintlink.net (144.224.112.17) 185.336ms 10: sl-crs1-hrs-0-0-2-0.sprintlink.net (144.232.7.133) 511.799ms 11: sl-crs1-nyc-0-6-0-0.sprintlink.net (144.232.24.97) 156.634ms [ several hops of no reply]
Mutex vs. Semaphore
I just want to say that this sequence of blog posts by Niall Cooling is a great, detailed discussion about mutexes and semaphores.