si wrote: ›jmi: na reply defaultne caka pokial viem wokenny ping, ale *nixovy nie a ked mu poviem -i 0.002 tak mi posle kazdej 0.002 sekundy packet... (overis si to napriklad tak ze si pustis tcpdump)
podla mojich skusenosti, pre ping co je v RH 7.3 az FC 2 to tak nie je vzdy, vid niektore pokusne vysledky
Quote: › ping juh -s 1450 -i 0.01 -c 1000
--- juh.tnet ping statistics ---
1000 packets transmitted, 1000 received, 0% packet loss, time 16475ms
rtt min/avg/max/mdev = 4.002/4.389/12.807/0.732 ms, pipe 3
(nic sa nestrati, max ping 12ms a predsa mu to trvalo 16s a stroje to snad stihaju, vid pokus kde je -l definovane)
Quote: › nice -n -10 ping juh -s 1450 -i 0.01 -c 100
--- juh.tnet ping statistics ---
100 packets transmitted, 100 received, 0% packet loss, time 1492ms
rtt min/avg/max/mdev = 4.011/4.353/13.093/0.961 ms, pipe 3
Quote: › nice -n -10 ping juh -s 5000 -i 0.01 -c 100
--- juh.tnet ping statistics ---
100 packets transmitted, 100 received, 0% packet loss, time 1729ms
rtt min/avg/max/mdev = 7.324/8.127/16.114/1.041 ms, pipe 3
Quote: › nice -n -10 ping juh -s 5000 -i 0.01 -c 100 -l 10
--- juh.tnet ping statistics ---
100 packets transmitted, 100 received, 0% packet loss, time 894ms
rtt min/avg/max/mdev = 7.067/10.688/38.309/5.232 ms, pipe 8
pre uplonost
Quote: › nice -n -10 ping juh -s 5000 -A -c 100
--- juh.tnet ping statistics ---
100 packets transmitted, 100 received, 0% packet loss, time 1247ms
rtt min/avg/max/mdev = 7.090/8.072/14.049/0.876 ms, pipe 3, ipg/ewma 12.596/7.942 ms
Quote: › ping -V
ping utility, iputils-ss020927
inak je to compexovy 5ghz spoj na asi 3.5km
no porobil som dalsich asi 30 testov a nedava to ziadnu logiku, ani po 100mbit
tak predsa som cosi nasiel. Nehladal som presnu hranicu, ale pokial je -i parameter aspon 0.02 tak to sedi s tym co hovoris ty. Pokial je 0.01 a mensi tak to nesedi a realny cas sa "mozno da odhadnut" s odchylkou asi 20% ako pocet_paketov*(interval+avg_rtt), vid priklady:
Quote: › ping juh -i 0.01 -c 1000 -s 1450
--- juh.tnet ping statistics ---
1000 packets transmitted, 1000 received, 0% packet loss, time 16313ms
rtt min/avg/max/mdev = 4.000/4.374/9.848/0.585 ms, pipe 2
ping juh -i 0.01 -c 1000
--- juh.tnet ping statistics ---
1000 packets transmitted, 1000 received, 0% packet loss, time 14225ms
rtt min/avg/max/mdev = 2.299/2.634/7.764/0.513 ms, pipe 2
ping juh -i 0.01 -c 1000 -s 5000
--- juh.tnet ping statistics ---
1000 packets transmitted, 1000 received, 0% packet loss, time 16946ms
rtt min/avg/max/mdev = 6.858/8.162/15.675/0.974 ms, pipe 3
inak zaujimave je ze ked dam 0.005 tak cas klesne asi na 60-70% toho co bolo pre 0.01
koniec experimentov, cakaju ma, ideme zapit divny ping  |
