Gary Gatten wrote:
> I found when I increased the rrd level to "full" for hosts, domains, and
> interfaces it would fault very often - sometimes it would only run for a
> few seconds.  The gdb spewed various messages about files missing, etc.
> I've since changed it to Full for Interfaces only and it's much better.

We're running with:

Dump Interval: 300
Throughput Granularity: 6
Dump Hours: 96
Dump Days: 45
Dump Months: 18
RRD Update Delay 10
Data to Dump: Only "Interfaces"
RRD Detail: Full
Detect Anomalies: Yes

Most of our crash lines look like:

May  8 06:10:45 fw1-pri kernel: ntop[6708]: segfault at 0000000008258000 
rip 0000003ec2c03d9b rsp 0000000042802d88 error 4

May  9 20:51:54 fw1-pri kernel: ntop[10329]: segfault at 
000000000c718000 rip 0000003ec2c03d9b rsp 0000000043c04d88 error 4

May 10 17:28:00 fw1-pri kernel: ntop[25581]: segfault at 
00000000196fe000 rip 0000003ec2c03d9b rsp 00000000459fc1a8 error 4

May 12 03:52:06 fw1-pri kernel: ntop[5650]: segfault at 000000000255f000 
rip 0000003ec2c03d9b rsp 0000000042802d88 error 4

May 12 05:22:55 fw1-pri kernel: ntop[23672]: segfault at 
000000001168d000 rip 0000003ec2c03d9b rsp 0000000043c04d88 error 4

> I've also found that if a browser is left open for long periods on any
> number of report pages, this will eventually cause a fault as well.  I
> had nTop running perfect for about a month then it started dying several
> times a day.  I found one of my team had added nTop reports to his ..
> "monitoring console" - which is a browser window open to a BUNCH of
> various monitoring things: MRTG, nTop, etc.  I had him remove it and all
> is well again.  Log files showed "EPIPE" errors when sending to web
> client....

I see those a lot if you leave the "Global Traffic Statistics" page 
open.  I usually have the "Summary -> Network Load" graphs loaded in a 
browser window.  I may change over to only having them auto-refresh 
after 60 minutes instead of the current 2 or 3 minutes.
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