Messages in this thread | | | Date | Tue, 03 Oct 2006 10:47:09 -0500 | From | "Jose R. Santos" <> | Subject | Re: Fwd: Any way to find the network usage by a process? |
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Irfan Habib wrote: > Hi, > > Is there any method either kernel or user level which tells me which > process is generating how much traffic from a machine. For example if > some process is flooding the network, then I would like to know which > process (PID ideally), is generating the most traffic. > >
A while ago I did a SystemTap script to solve a problem similar to this. It's been siting in my system for a while collecting dust and you currently don't need the embedded C code since the networking.stp tapset has all this script needs(and more), but I should point you in the right direction.
This worked a couple of months ago but it is currently untested. Hope it helps.
-JRS
global ifstats, ifdevs, execname
%{ #include<linux/skbuff.h> #include<linux/netdevice.h> %}
probe kernel.function("dev_queue_xmit") { execname[pid()] = execname() name=skb_to_name($skb) ifdevs[name] = name ifstats[pid(),name] <<< 1 }
function skb_to_name:string (skbuff:long) %{ struct sk_buff *skbuff = (struct sk_buff *)((long)THIS->skbuff); struct net_device *netdev = skbuff->dev; sprintf (THIS->__retvalue, "%s" , netdev->name); %}
probe timer.ms(5000) { exit() }
probe end { foreach( pid in execname) { if (pid == 0) continue printf("%15s[%5d] ->\t", execname[pid],pid) foreach( ifname in ifdevs) { printf("[%s:%7d] \t", ifname, @count(ifstats[pid, ifname])) } print("\n") } print("\n") }
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