MediaBanc
asked on
Perfmon Bytes/sec
Hi Experts,
Right now, I'm using Perfmon in my application server. I added a counter Network Interface\Bytes Total/sec in monitoring. The server have gigabit nic. I just want to know the threshold value for it so that I will know if the network is already saturated or causing bottleneck.
Thank you.
Right now, I'm using Perfmon in my application server. I added a counter Network Interface\Bytes Total/sec in monitoring. The server have gigabit nic. I just want to know the threshold value for it so that I will know if the network is already saturated or causing bottleneck.
Thank you.
SOLUTION
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Yes.
As you have seen from the above only getting 70% of the published NIC speed is normal rule of thumb. Also you have to look outside of the single network adapter and use a lan sniffer that typically taps into your ethernet circuit to determine the total network traffic. A bad network adapter can bring your entire network to a crawl by flooding the network with malformed packets. Even a section of bad cable can slow things down measurably.. To get the benefits of CAT 6 you need CAT 6 throughout the network.
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one can get > 100Mbytes/sec on ethernet, but that requires nailing MTU, having a switch, no collisions, and manipulating traffic so that each packet has max payload size. I can get that easily if I write low-level UDP socket code, but you won't be doing that.
Real-world, figure anything pushing 90MB/sec is the best you can expect unless you are running benchmarks.
Real-world, figure anything pushing 90MB/sec is the best you can expect unless you are running benchmarks.
ASKER
With regards to the link above, the author specified:
I would like to know how did he come up with the information or how to measure it. I'm confused yet if for a Gigabit NIC, should I multiply it by 10 since it's gigabit?
Thank you.