ISC 386/ix sysadm filemgmt facilities & cpio

[Paul De Bra]

In article <266 at phavl.UUCP> rob at phavl.UUCP (Robert Ransbottom) writes:
}...
}Incidentally -- on a Dell System 310 (20Mhz & 4Meg) under 386/ix
}r2.0.1 with a 60Meg Wangtek -- empirical testing with
}...
}
}yields the following:
}
} $Opts                  Megs/Minute
} -ovcC262144            0.42
} -ovcC102400            3.18
}...

Yep, don't forget the bug in cpio which multiplies the buffer size by
10.
102400 gives you 1024000 bytes, a nice size for smooth transfer.
262144 gives you 2621440 bytes, which, after adding kernel exceeds
your physical memory. As a result your system starts paging a lot,
probably on the same disk cpio is trying to read from...

Paul.
-- 
------------------------------------------------------
|debra at research.att.com   | uunet!research!debra     |
------------------------------------------------------