.BI logbufs= value
Set the number of in-memory log buffers. Valid numbers range
from 2-8 inclusive.
-The default value is 8 buffers for filesystems with a
-blocksize of 64KiB, 4 buffers for filesystems with a blocksize
-of 32KiB, 3 buffers for filesystems with a blocksize of 16KiB
-and 2 buffers for all other configurations. Increasing the
-number of buffers may increase performance on some workloads
-at the cost of the memory used for the additional log buffers
-and their associated control structures.
+The default value is 8 buffers for any recent kernel.
.TP
.BI logbsize= value
Set the size of each in-memory log buffer.
Valid sizes for version 1 and version 2 logs are 16384 (16k) and
32768 (32k). Valid sizes for version 2 logs also include
65536 (64k), 131072 (128k) and 262144 (256k).
-The default value for machines with more than 32MiB of memory
-is 32768, machines with less memory use 16384 by default.
+The default value for any recent kernel is 32768.
.TP
\fBlogdev=\fP\fIdevice\fP and \fBrtdev=\fP\fIdevice\fP
Use an external log (metadata journal) and/or real-time device.