Howdy,
I am doing some testing, and wondered if the value assigned to maxcontig
can be larger than the number of logical blocks in a cylinder group? The
mkfs_ufs man page would lead me to believe the answer to my question is
"yes":
maxcontig=n The maximum number of logical
blocks, belonging to one file, that
are allocated contiguously. The
default is calculated as follows:
[ .... ]
I want to see if it's possible to configure UFS to simulate VxFS's ability
to allocate single sequential block extents. We have several applications
that perform large sequential I/O's, and have significantly increased
throughput by allocating one large sequential extent per file. Can we
achieve the same thing by adjusting cgsize and maxcontig with UFS? Any
thoughts or feedback are welcome!
Thanks,
- Ryan
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