My compatriot Chris Gibson highlighted a great performance tuning attribute for Fibre Channel adapters in this blog post . I was so excited that I dusted off my blog-writing skills (much neglected) and got fired up enough to put Chris' advice into practice via a script. First, the advice - which came originally from IBM's Dan Braden - is to display the number of command elements - num_cmd_elems - on a Fibre Channel adapter. num_cmd_elems? Huh? On AIX (and on the Virtual I/O Server) there is an attribute on Fibre Channel... [More]

Tags:  fc dan chris gibson fibre aix chdev channel queue adapter num_cmd_elems technote performance depth disk braden