the limit for overqueueing was too small for stuff like fcp
on a fileserver connected with a standard 32K limit pipe like
ramfs.
fcp usesd 8K*16procs > 32K*2
the biggest queue limit used in the kernel is 256K making
the maximum queue bloat 2.5MB or 320K for standard pipes.
that should be big enougth to never happen in practice
unless there is a bug which we like to catch before we
exhaust all kernel memory.
