uhub4 at uhub0 port 5 "NEC product 0x005a" rev 2.00/1.00 addr 2
 umass0 at uhub4 port 1 configuration 1 interface 0 "TOSHIBA TransMemory" rev 2.00/1.10 addr 3
 umass0: using SCSI over Bulk-Only
 scsibus2 at umass0: 2 targets, initiator 0
 sd0 at scsibus2 targ 1 lun 0: <TOSHIBA, TransMemory, PMAP> SCSI0 0/direct removable
 sd0: 961MB, 512 bytes/sec, 1968128 sec total

 #!/bin/sh
 
 for opt in none noatime async noatime,async softdep softdep,async
 do
     if [ X$opt = Xnone ]
     then
         opt=""
     else
         opt="-o $opt"
     fi
 
     echo ==== opt: $opt ====
 
     if mount $opt /dev/sd0d /mnt
     then
         cd /mfs/ && time pax -rwpe . /mnt/tmp/.
         umount /mnt
         sleep 60
     fi
 
     if mount $opt /dev/sd0d /mnt
     then
         cd /mnt/tmp && time rm -rf *
         cd
         umount /mnt
         sleep 60
     fi
 done

|mount /dev/sd0d /mnt|>|>|cd /mfs &&&br;time pax -rwpe . /mnt/tmp/.|>|>|cd /mfs/tmp &&&br;time rm -rf *|
|mount option   |real|user   |system  |real     |user   |system |
|none           |24m18.37s|0m1.15s|0m16.58s|14m54.99s|0m0.26s|0m5.70s|
|noatime        |23m56.60s|0m1.03s|0m16.95s|14m32.22s|0m0.42s|0m5.59s|
|async          |07m28.74s|0m0.79s|0m14.29s|00m06.91s|0m0.24s|0m1.90s|
|async,noatime  |07m29.09s|0m0.87s|0m14.97s|00m07.02s|0m0.19s|0m2.06s|
|softdep        |09m55.40s|0m0.73s|0m15.59s|04m23.48s|0m0.24s|0m2.17s|
|softdep,noatime|09m54.15s|0m0.90s|0m15.05s|04m27.81s|0m0.21s|0m1.99s|
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