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Originally Posted by radio
I'm looking for anyone else that can confirm or deny this. All you need is a transfer of two minutes to notice the pattern in a network monitor like taskmanager or analogx netstat live.
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Originally Posted by blue68f100
Phoenix32 is the 4000 specialist, see what he has to say.
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Go here and look at the Netstat Live screenshots
http://forums.procooling.com/vbb/sho...t=13731&page=2
Yes, I have seen these spikes, but not anywhere near as glaring as yours are (I suspect the 320 GB drives for that). These spikes appear to be as the cache loads/unloads. If you watch the disk activity, you will see this.
Further, the spikes are almost non existant (very very small and short) when sending with FTP. Add in that it is more pronounced when receiving FTP or when using SMB and this is an indication these cache loads are being caused by CPU load (the CPU cannot keep up with the cache when under higher loading).
Reducing the cache size seems to minimize this effect and part of why I recommend to people to use 128 MB memory unless they are running JVM enough to warrant 256 MB memory.
Now with all that said, I have not seen spikes anywhere near as glaring as yours were. Again, I have to suspect the 320 GB drives as part of that equation. We recently dug up information indicating the OS does have a practical limit of 1 TB (by we, I mean David). As we have said many times, the 4 x 300/320 GB drives just do not look like a good idea in a SNAP 4000. It might "apprear" to be working properly, but in the end may cause some serious grief.