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Extremely weird network issue
So I have two boxes,
Box Left and Box Right. Same exact network, same location, connected to same switch and router. Only difference? Box L have a bit newer CPU then box R. But for some reason, Box L have slower download then Box R.
Tried switching port, swapping Connection but for some reason, Box L won't download faster then Box R.
Both of them are running exact same setup (well fresh minimal centos 6 64bit), I am sitting here scratching my head for last 2 hour trying to figure out what could have went wrong.
Any help, any idea would help.
Comments
same IP range?
Yeap yeap. Same block. > @RyanD said:
On box L it would be anywhere from 9-27MB/s anytime while box R does a solid 50+.
Have you swap the network card?
I have a feeling this might be the case. Just came home. Don't feel like going back again. Will check tomorrow.
Yeap. They are fine.
Did you tweak sysctl on both boxes? tcp_rmem and the like.
Try changing the hard disk and verify if the issue is with the board.
Had a similar case with one of my Pi and was able to solve it by changing the exact same hard disk.
Paste your trace route on both server.
+1 with @sdglhm can't it come from the hard drive ?
Can you run
fdisksmartctl ?am thinking more of lan card / driver problem / duplex mismatch
you can also try different OS like Ubuntu for a change / quick test
Have you check ethtool output?
Faulty board is the main culprit. Just swapped out and all is well.
As I mentioned nic and drives were fine.
Thank you @jack for pointing out the right response and thanks everyone for your kind help