[mythtv-users] How much horespower for frontend?

[James Pifer]

> Ahh (I just erased a long post because I see the problem)...
> 
> You can not use /dev/hda1 with hdparm -d you must use the drive
> itself. 
> 
> hdparm -d1 /dev/hda
> Also can you post the output of just hdparm /dev/hda 
> 

Below are the results from dma settings on both machines. Also, I do
have another machine I would be willing to swap out and use for this
purpose. It's a 2.6 Ghz Celeron with 1.5 GB RAM. Would this machine need
to be my backend as well, or could it just be the frontend? Honestly I
would like it to function as both so I can take advantage of the
hauppauge cards for the remote. But for testing purposes I could throw
linux and a frontend on it to see if it works better. What do you
suggest?

Results below.
Thanks,
James

Here are the results from the backend machine:

[root at mythtv ~]# hdparm -tT /dev/hda; hdparm -tT /dev/hdb; hdparm -
tT /dev/hdc; hdparm -tT /dev/hdd;

/dev/hda:
 Timing cached reads:   612 MB in  2.01 seconds = 304.29 MB/sec
 Timing buffered disk reads:  154 MB in  3.03 seconds =  50.78 MB/sec

/dev/hdb:
 Timing cached reads:   624 MB in  2.00 seconds = 311.32 MB/sec
 Timing buffered disk reads:   66 MB in  3.03 seconds =  21.78 MB/sec

/dev/hdc:
 Timing cached reads:   628 MB in  2.01 seconds = 312.34 MB/sec
 Timing buffered disk reads:   76 MB in  3.07 seconds =  24.77 MB/sec

/dev/hdd:
 Timing cached reads:   620 MB in  2.01 seconds = 308.01 MB/sec
 Timing buffered disk reads:   74 MB in  3.02 seconds =  24.49 MB/sec
[root at mythtv ~]#
hdparm /dev/hda;hdparm /dev/hdb;hdparm /dev/hdc;hdparm /dev/hdd;

/dev/hda:
 multcount    = 16 (on)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 24321/255/63, sectors = 390721968, start = 0

/dev/hdb:
 multcount    = 16 (on)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 19386/16/63, sectors = 19541088, start = 0

/dev/hdc:
 multcount    = 16 (on)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 19929/255/63, sectors = 320173056, start = 0

/dev/hdd:
 multcount    = 16 (on)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 19929/255/63, sectors = 320173056, start = 0


Here are the results from the frontend machine:
[root at mythtv2 ~]#  hdparm -tT /dev/hda; hdparm -tT /dev/hdb; hdparm -
tT /dev/hdc; hdparm -tT /dev/hdd;

/dev/hda:
 Timing cached reads:   624 MB in  2.00 seconds = 311.94 MB/sec
 Timing buffered disk reads:   46 MB in  3.03 seconds =  15.16 MB/sec

/dev/hdc:
 Timing cached reads:   624 MB in  2.00 seconds = 311.85 MB/sec
 Timing buffered disk reads:   76 MB in  3.05 seconds =  24.90 MB/sec

/dev/hdd:
 Timing cached reads:   632 MB in  2.01 seconds = 314.93 MB/sec
 Timing buffered disk reads:   74 MB in  3.01 seconds =  24.61 MB/sec
[root at mythtv2 ~]#
hdparm /dev/hda;hdparm /dev/hdb;hdparm /dev/hdc;hdparm /dev/hdd;

/dev/hda:
 multcount    = 16 (on)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 13328/15/63, sectors = 12594960, start = 0

/dev/hdc:
 multcount    = 16 (on)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 24321/255/63, sectors = 390721968, start = 0

/dev/hdd:
 multcount    = 16 (on)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 19457/255/63, sectors = 312581808, start = 0
[root at mythtv2 ~]#