Ascend Archive
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Re: (ASCEND) Feature Requests and Ascend?
On Thu, 9 Oct 1997, Tim Basher wrote:
> I just tried to reproduce your problem here and I was not [fully] able to.
> I was not able to bring the MAX to its knees or completely destroy performance.
> I was able to produce a measurable change in latency. It might or might not
> be noticeable to a remote user. I did not measure throughput.
for h in `jot 60 1 60`; do (nc host 5000 &); done
across ethernet:
64 bytes from xxx: icmp_seq=5 ttl=255 time=1044.850 ms
64 bytes from xxx: icmp_seq=6 ttl=255 time=995.315 ms
64 bytes from xxx: icmp_seq=7 ttl=255 time=727.330 ms
64 bytes from xxx: icmp_seq=8 ttl=255 time=735.823 ms
64 bytes from xxx: icmp_seq=9 ttl=255 time=1037.498 ms
Try a few more (ie. 80) and:
45 packets transmitted, 33 packets received, 26% packet loss
round-trip min/avg/max = 252.679/21128.747/39426.912 ms
In the above example, it just stops responding to pings or nearly
any other traffic (if I am telnetted to a termserv prompt it takes
~30-60 seconds to echo a keystroke) until the connections are
closed. It normally comes back when the sessions are disconnected.
Sessions over WAN links are brought to an almost complete standstill.
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