maximum number of queued commands
configname: CONFIG_SCSI_NCR53C8XX_MAX_TAGS
Linux Kernel Configuration
└─>Device Drivers
└─>SCSI device support
└─>SCSI low-level drivers
└─>maximum number of queued commands
In linux kernel since version 2.6.20 (release Date: 2007-02-04)
This option allows you to specify the maximum number of commands
that can be queued to any device, when tagged command queuing is
possible. The default value is 32. Minimum is 2, maximum is 64.
Modern hard disks are able to support 64 tags and even more, but
do not seem to be faster when more than 32 tags are being used.
So, the normal answer here is to go with the default value 32 unless
you are using very large hard disks with large cache (>= 1 MB) that
are able to take advantage of more than 32 tagged commands.
There is no safe option and the default answer is recommended.
that can be queued to any device, when tagged command queuing is
possible. The default value is 32. Minimum is 2, maximum is 64.
Modern hard disks are able to support 64 tags and even more, but
do not seem to be faster when more than 32 tags are being used.
So, the normal answer here is to go with the default value 32 unless
you are using very large hard disks with large cache (>= 1 MB) that
are able to take advantage of more than 32 tagged commands.
There is no safe option and the default answer is recommended.