>I notice when dumping that the DLT drive does not stream continously.
>
>Are there options to taper to make it go faster ?
Was it writing from the holding disk or from the network? In other
words, was taper getting fed fast enough?
You might try playing with the tapebufs parameter, which controls how
many shared memory buffers are shared between the reader and writer.
But be aware that on the systems I tested with, increasing the value
either made no difference or actually made things slower (although the
person who originally wrote that change saw some improvement).
I'll be committing a change to the amanda-242-tapeio (et al) branches
tomorrow that introduces a new tapetype "blocksize" parameter for using
other than 32 KByte blocks. As with the buffer count, though, you
may not get as much improvement as you would think -- I saw at most 1%
going up to 256 KBytes.
Put another way, taper is already doing a really good job. If the drive
is not streaming, you may need to look elsewhere (how fast taper can
read from the holding disk, how fast the controller can feed the drive,
other bus contention, termination problems, cable problems, etc).
>Joe
John R. Jackson, Technical Software Specialist, [EMAIL PROTECTED]
