01-06-2003
AIX Disk 'O' problem
Hello,
I'm running AIX 4.3 on an IBM RS6000 Machine with 9 SCSI drives and 4 processors.
The machine seems to cope fine when data is being written to it but slows down considerably when outputting data.
For example when I FTP a 1Gb file to the machine from an NT box, it goes on no problem in about 2 minutes. However, when I transfer the file back, it takes longer and the AIX machine grinds to a halt for all processes during the transfer.
When using Oracle SQL Loader to load a flat file to the database, it is faster to load the file from another machine over the network into the AIX Oracle instance that it is from the AIX machine to its own oracle instance.
We've used different machines to try and send data to the AIX machine and get the same results.
It appears to be an I/O bottleneck without the input bottleneck - (having used iostat to check the processor usage we found it was 86% idle) does anyone have any clues as to what might be wrong?
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