Hello everyone,
I've been a life long Unix/Linux user but I'll be the first to admit I have little specific AIX knowledge at this point and I've inherited these systems for better or worse so please forgive if I ask something in the wrong context. And yes, I've searched google for 3 days now
I have a bunch of Power755 machines running AIX 6.1.0.0. I have multiple FC adapters to storage and 10GbE ethernet.
On the very same network, switch and storage I also have a bunch of x86 machines running RHEL75, multiple FC adapters to storage and 10GbE ethernet.
On the Linux boxes I can copy files (scp, ftp, nfs, rsync) at about 150MB/s.
On the AIX boxes those same copies are running around 40MB/s.
And, I can't figure out why???
I've been though several network tuning walkthru's found on google and nothing seems to make any difference.
Obviously the Power755's are 8 year old hardware where there x86 machines are circa 2017/2018 hardware and the AIX boxes only have 32GB of RAM where my x86 stuff has 256GB and 512GB. But, does that really account for the difference in network performance? I just have a hard time believing that IBM would put out a piece of iron that doesn't perform of up the published specs...
Anyway, if someone can help point me in the direction to track this down I'd much appreciate it.
The FC cards are all same speed, 8Gbps, there's plenty of flash and spindles in the NetApp that I know there's no bottle neck there. We've swapped ethernet adapters, cables, swtichports, etc. and I'm left with little choice but to draw the conclusion that somehow these AIX boxes are configured incorrectly. Oh, and yes, the ethernet ports ‘show' they are up at 10GB.
Thanks in advance,
-brian