NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
Solved
RN3220 CPU upgrade -- Negligible effect??
I upgraded the processor of an RN3220 from an i3-3220 3.30GHz, which is dual-core 4-thread CPU, to a Xeon E3-1225 V2 @ 3.20GHz, a quad-core 4-thread CPU as comes in an RN4220 and sysbench shows almo...
OK, I'm not entirely sure what was going on. I upgraded a second one and got way better results. So I swapped the memory between the two and the first one now gave me the improved speed. Just to check, I swapped the memory back, and now they both perform like this:
Test execution summary:
total time: 2.5567s
total number of events: 10000
total time taken by event execution: 20.4385
per-request statistics:
min: 1.02ms
avg: 2.04ms
max: 28.60ms
approx. 95 percentile: 11.02msThreads fairness:
events (avg/stddev): 1250.0000/27.44
execution time (avg/stddev): 2.5548/0.00So, the memory must not have been seated well, even though dmidecode showed both banks properly. Since I swapped out the memory before the CPU, I suspect that the performance shown for the original processor is also bogus.
Are all NAS's using the same HDD's?
I always use IOMeter for benching block storage. Maybe set up up a couple of iSCSI LUNS and try it.
http://www.iometer.org/
Ah, wait. I see - this is a CPU perf question, not a disk IO question, sorry for misunderstanding.
Did you upgrade the memory to 8GB to match the RN4220? I have not been able to see a pic of the motherboard, but if the 3220 has only 1 4GB DIMM, and the 4220 has 2 4GB DIMMs, it could be using dual channel mode which greatly improves memory access throughput.
Yes, I also upgraded the memory to 2 4GB DIMMs, as the motherboard does appear to be dual-channel (two colors of DIMM slots).
I wish Netgear had included dmidecode in the tools of the base OS. If it were, you could use the examples from here (https://askubuntu.com/questions/1330514/how-to-check-ram-channel) to make sure that it was running in dual channel.
You might be able to see the memory config from the BIOS if you still have the monitor hooked up.
NETGEAR Academy
Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!
