code: mafs

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added metrics

--- a/TODO

+++ b/TODO

@@ -13,7 +13,4 @@

 make docs/mafs.ms more interesting?

 test -A announce

 Clean up the Iobuf locking description?

-man/mafs.4 man/mafs.8

-	Add EXAMPLES

-	Add mafs.pdf as a resource

 Open device file in EXCL mode?

--- a/docs/mafs.ms

+++ b/docs/mafs.ms

@@ -1213,12 +1213,11 @@

 Ream and start single process M[a]fs on a disk and also mount it for use.

 .sp

 .nf

-	mount -c <{disk/mafs -s -r mafs_myservice -h 10 mydisk <[0=1]} /n/mafs_myservice

+	mount -c <{disk/mafs -s -r mafs_myservice mydisk <[0=1]} /n/mafs_myservice

 .in 3n

 .br

 	-s: use stdin and stdout for communication

 	-r mafs_myservice: ream the disk using mafs_myservice as the service name

-	-h 10: use 10 hash buckets

 	 mydisk: running mafs on the disk, mydisk

 .in 0

 .fi

@@ -1499,6 +1498,48 @@

 .br

 .nf

 	for(t in tests/test.2/blocks/^`{seq 0 39}*){ echo $t; echo '---------'; cat $t; echo }

+.fi

+.sp

+.sp

+.ft B

+Performance metrics

+.ft R

+.sp

+.nf

+	ramfs -m /n/ramfs

+	touch /n/ramfs/file

+	cat /dev/zero | tput -p > /n/ramfs/file

+	172.49 MB/s

+	174.56 MB/s

+	163.50 MB/s

+	125.00 MB/s

+	102.99 MB/s

+	87.81 MB/s

+	77.78 MB/s

+	69.50 MB/s

+	63.71 MB/s

+	58.65 MB/s

+	54.72 MB/s

+	dd -if /dev/zero -of /n/ramfs/file -count 700 -bs 1m

+

+	disk/mfs -r mfs_ramfs_file /n/ramfs/file

+	mount -c /srv/mfs_ramfs_file /n/mfs_ramfs_file

+	cat /dev/zero | tput -p > /n/mfs_ramfs_file/zeros.file

+	6.26 MB/s

+	5.99 MB/s

+	5.90 MB/s

+	echo halt >> /n/mfs_ramfs_file/adm/ctl; lc /srv

+	unmount /n/mfs_ramfs

+

+	disk/mafs -r mafs_ramafs_file /n/ramfs/file

+	mount -c /srv/mafs_ramafs_file /n/mafs_ramafs_file

+	cat /dev/zero | tput -p > /n/mafs_ramafs_file/zeros.file # throttles down to mfs speed

+	45.49 MB/s

+	31.52 MB/s

+	23.16 MB/s

+	24.54 MB/s

+	echo halt >> /n/mafs_ramafs_file/adm/ctl; lc /srv

+	unmount /n/ramfs

 .fi

 .sp

 .sp