[plug] Snappy UI

[Onno Benschop]

In an attempt to make this thread of more use to others, I'll go through
steps of optimisation, one at a time. (This will also help me not break
my machine in one big optimisation "fix" :-)

Let us start with hdparm. Any suggestions for improvement welcomed,
short of selling the drive and getting a faster one.

Here are the bits of information I have:

hdparm /dev/hda:
        /dev/hda:
         multcount    = 16 (on)
         IO_support   =  1 (32-bit)
         unmaskirq    =  1 (on)
         using_dma    =  1 (on)
         keepsettings =  0 (off)
         readonly     =  0 (off)
         readahead    = 256 (on)
         geometry     = 38760/16/63, sectors = 39070080, start = 0


Three runs of hdparm -tT:
        /dev/hda:
         Timing buffer-cache reads:   344 MB in  2.00 seconds = 171.77 MB/sec
         Timing buffered disk reads:   74 MB in  3.01 seconds =  24.56 MB/sec
         
        /dev/hda:
         Timing buffer-cache reads:   344 MB in  2.01 seconds = 170.83 MB/sec
         Timing buffered disk reads:   76 MB in  3.01 seconds =  25.25 MB/sec
         
        /dev/hda:
         Timing buffer-cache reads:   344 MB in  2.02 seconds = 170.24 MB/sec
         Timing buffered disk reads:   76 MB in  3.00 seconds =  25.33 MB/sec


hdparm -i:
        /dev/hda:
         
         Model=IC25N020ATCS05-0, FwRev=CS2OA61A, SerialNo=CLP201F2G1XBHA
         Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
         RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
         BuffType=DualPortCache, BuffSize=7898kB, MaxMultSect=16, MultSect=16
         CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=39070080
         IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
         PIO modes:  pio0 pio1 pio2 pio3 pio4
         DMA modes:  mdma0 mdma1 mdma2
         UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
         AdvancedPM=yes: mode=0x80 (128) WriteCache=enabled
         Drive conforms to: ATA/ATAPI-5 T13 1321D revision 3:
         
         * signifies the current active mode


/etc/hdparm.conf
        /dev/hda {
               mult_sect_io = 16
               dma = on
               io32_support = 1
               transfer_mode = 69
               interrupt_unmask = on
        }

Onno Benschop 

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