hi david im also trying to find a reason for ping's hanging.i got the same problem on my CRON-ed monitoring scripts which spawned new instances of the script cause ping hanged. its not running MDK though. but it exhibits the same problem as yours. the kernel on that machine is 2.4.18
the quick fix i did was put a time out of on the pinging. once it doesnt respond for about 2000 secs, ping aborts. check out the -w option of the command ping. hth dianne --- David Relson <[EMAIL PROTECTED]> wrote: > Greetings, > > Anybody know of problems with kernel 2.4.19 and > ping? Here's why I ask: > > For the past few years, I've used a python script to > monitor the uptime for > my DSL connection. Each minute the script runs > "ping -c 1 $nameserver" to > see if I can still access my ISP's DNS server. > > About a month ago, I updated from Mandrake 8.2 to > Mandrake 9.0 (with kernel > going from 2.4.18-6mdk to 2.4.19-16mdk) and changed > ISPs from DirecTV to > DigitalRealm (with attendant change in DSL modem). > Since then I have > noticed that my script hangs fairly reqularly - > sometimes once a day, > sometimes several times a day. > > As a test, for the last couple of days I'm running > the script from from > three machines, with different kernels - two with > 2.4.18-6mdk (from > Mandrake 8.2) and one with 2.4.19-16mdk (from > Mandrake 9.0). I've had > several failures with the 2.4.19 machine and none > with the 2.4.18. > > When the problem occurs, I've used netstat and ps to > see what's > happening. Here's typical output: > > [root@osage relson]# netstat -pvlA inet | grep ping > raw 0 0 osage.osagesoftwar:icmp > *:* 7 6178/ping > > [root@osage relson]# ps -wl 6177 6178 > F S UID PID PPID C PRI NI ADDR SZ WCHAN > TTY TIME CMD > 000 S 0 6177 22689 0 69 0 - 493 wait4 > ? 0:00 sh -c > ping -c 1 166.90.244.250 >/dev/null > 100 S 0 6178 6177 0 69 0 - 355 wait_f > ? 0:00 ping > -c 1 166.90.244.250 > > Is anybody familiar with this problem? Is there a > solution? > > Thanks. > > David > -------------------------------------------------------- > David Relson Osage Software > Systems, Inc. > [EMAIL PROTECTED] Ann Arbor, MI 48103 > www.osagesoftware.com tel: 734.821.8800 > > > > Want to buy your Pack or Services from MandrakeSoft? > > Go to http://www.mandrakestore.com > __________________________________________________ Do you Yahoo!? Yahoo! Shopping - Send Flowers for Valentine's Day http://shopping.yahoo.com
Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com
