PR kern/78968 MBuf cluster exhaustion. RFC (solutions)

[Ernest Smallis]

Hi All, I am seeing this problem as well:
a. The kernel is in a tight loop via the fxp driver since there are frames that need to be DMA'd but cannot be because 'b.'
b. The fxp driver calls m_getcl( ) which returns ENOBUFS since there are no clusters to satisfy the request. This goes on constantly so it appears the system is hung.
I submitted a follow-up to the PR and also requested contact with a committer to discuss this problem and possible solutions. 
I think this should be fixed, right away.
If you would like to donate your 2 cents worth to this discussion; I would be very happy to hear from you and am grateful for the input. 
Ernie ;-)

Ernest Smallis
Sr. Software Engineer
RAPID Development
esmallis at stbernard.com
858-524-2137