Ivars Drikis (drikis@lanet.lv)
Tue, 4 Aug 1998 21:34:19 +0200 (WET)
Hi,
I hawe problem with recording (cdrecord+paride) of CD-images that
are located on a NFS mounted filesystem. fifo buffer become empty
after writing (I test only -dummy moda) approximately 14M. It is
surpricely because my 'nfs performancy test': reading of 16M datafile
test dd if='fila_in_nfs' of=/dev/null
gives 0.6-0.7 Mb/sec and use 3-5% of CPU. Tests with small local CD-image
files are sucsessful.
My configuration.
NFS server - SGI Origin 200, running IRIX Release 6.4
My computer - PPro 200, 32M, Slackware, kernel 2.0.35
CD Recorder - HP SureStore CD-Writer Plus
Paride and network card boot messages are following
>> paride: epat registered as protocol 0
>> paride: epia registered as protocol 1
>> pg: pg version 1.01s, major 97
>> pg0: epat 1.01, Shuttle EPAT chip c6 at 0x378, mode 0 (4-bit), delay 1
>> pg0: HP CD-Writer+ 7100, slave
>> tulip.c:v0.88 4/7/98 becker@cesdis.gsfc.nasa.gov
>> eth0: Digital DC21041 Tulip at 0xe000, 21041 mode, 00 80 c8 38 e9 c0, IRQ 10.
>> eth0:21041 Media information at 30, default media 0800 (Autosense).
>> eth0: 21041 media #0, 10baseT.
I follow to instructions in www.torque.net/parport/cdr/html to make cdrecord.
As a result cdrecord detect my CD-WR. cdrecord -scanbus gives
>> Cdrecord release 1.6 Copyright (C) 1995-1998 Jörg Schilling
>> scsibus0:
>> 0) 'HP ' 'CD-Writer+ 7100 ' '1.00' Removable CD-ROM
>> 1) *
>> 2) *
>> 3) *
>> 4) *
>> 5) *
>> 6) *
>> 7) *
During test runs with -dummy option nfs performance dramatically decreases.
Beside them mouse and keyboard inputs starts 'jumping'.
----------------------------------------------------------------
Ivars Drikis, PhD stud. University of Latvia, Faculty of Physics
and Mathematics 19 Raina boulevard, RIGA, LV-1586, LATVIA
phone (private): 371-7-368289 fax : 371-7-820113
phone (ofice) : 371-7-277435
e-mail: drikis@lanet.lv
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This archive was generated by hypermail 2.0b3 on Wed 30 Dec 1998 - 10:18:06 EST