In McKusick's book "The design and Implementation of the 4.4BSD Operating system", in the "Buffer Management subsection
of the I/O system overview, there is a a sentence that says
"...depending on available memory, a system is configured with from
100 to 1000 buffers.." referring to the number of struct buf* in the
integrated VM/IO buffer cache.
I have plenty of RAM in my computer, but it seems like there are always
1000 buffers configured (empirical observation, if I try to allocate
one more after that the system freezes). How do I increase the nubmer of
buffers? More consicely, how do I allocate more memory to the buffer management subsystem?
Thanks Eno
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