Giorgos Keramidas wrote:
On 2005-07-12 16:38, Roman Kurakin <[EMAIL PROTECTED]> wrote:
Hi,
I am starting to investigate some net problem and I wonder if this
problem seen/known.
The problem was observed with ce(4) (Cronyx Tau32-PCI/Lite,
it is not in the tree yet, but similar to cp(4)/ctau(4) devices) and
sppp(4).
If you run usual ping you will see normal delay which is much less than
1sec.
But if you run flood ping, stop it, and run normal ping again you'll see
delay
about one sec.
ping x.x.x.x
delay << 1 sec
ping -f x.x.x.x
average delay << 1 sec
ping x.x.x.x
delay ~ 1 sec
This was seen on FreeBSD 4.11 stable.
Any ideas? Does any body observed such behaviour in other environment?
Is it possible that flood ping hits an icmp rate-limiting watermark and
then every subsequent icmp packet gets penalized with a delay until a
fair amount of time passes?
Wasn't observed on ethernet iface. But this is good idea to test delay
by some other type
of packets. Do you know any good ans simple tool for that?
rik
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