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Mon Oct 30 22:48:16 UTC 2006

Thanks,
Mitchell

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Hi, I am trying to enable DMA on my HD Myth box to increase performance.&nbsp; It works fine not but I have read so much about how DMA increases performance so i figured I would give it a shot... Here is my system config
 Chipset - SiS Western Digital HDD 500GB SATA Heres some term output... [root at Mitchell_mc myth]# /sbin/hdparm /dev/sda /dev/sda: &nbsp;IO_support&nbsp;&nbsp; =&nbsp; 0 (default 16-bit) &nbsp;readonly&nbsp;&nbsp;&nbsp;&nbsp; =&nbsp; 0 (off)
 &nbsp;readahead&nbsp;&nbsp;&nbsp; = 256 (on) &nbsp;geometry&nbsp;&nbsp;&nbsp;&nbsp; = 60801/255/63, sectors = 976773168, start = 0 (I take it that DMA is not ON) Trying to enable it.... [root at Mitchell_mc myth]# echo &quot;/sbin/hdparm -d1 /dev/hda&quot; &gt;&gt; /etc/rc.d/rc.local
 Still not working... [root at Mitchell_mc myth]# /sbin/hdparm /dev/sda /dev/sda: &nbsp;IO_support&nbsp;&nbsp; =&nbsp; 0 (default 16-bit) &nbsp;readonly&nbsp;&nbsp;&nbsp;&nbsp; =&nbsp; 0 (off) &nbsp;readahead&nbsp;&nbsp;&nbsp; = 256 (on) &nbsp;geometry&nbsp;&nbsp;&nbsp;&nbsp; = 60801/255/63, sectors = 976773168, start = 0
 Thinking maybe i need to reboot for it to take effect but it gives me the same thing.&nbsp; Trying to get more info on if my drive does DMA... [root at Mitchell_mc myth]# /sbin/hdparm -I /dev/sda /dev/sda:
 ATA device, with non-removable media &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Model Number:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; WDC WD5000KS-60MNB0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Serial Number:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; WD-WCANXXXXXXXX &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Firmware Revision:&nbsp; 08.02E08 Standards: 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Supported: 7 6 5 4 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Likely used: 7 Configuration: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Logical&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; max&nbsp;&nbsp;&nbsp;&nbsp; current &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; cylinders&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 16383&nbsp;&nbsp; 16383 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; heads&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 16&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 16 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; sectors/track&nbsp;&nbsp; 63&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 63
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -- &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; CHS current addressable sectors:&nbsp;&nbsp; 16514064 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; LBA&nbsp;&nbsp;&nbsp; user addressable sectors:&nbsp; 268435455 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; LBA48&nbsp; user addressable sectors:&nbsp; 976773168 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; device size with M = 1024*1024:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 476940 MBytes
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; device size with M = 1000*1000:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 500107 MBytes (500 GB) Capabilities: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; LBA, IORDY(can be disabled) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Queue depth: 32 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Standby timer values: spec&#39;d by Standard, with device specific minimum
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; R/W multiple sector transfer: Max = 16&nbsp; Current = 16 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Cycle time: min=120ns recommended=120ns &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PIO: pio0 pio1 pio2 pio3 pio4 
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Cycle time: no flow control=120ns&nbsp; IORDY flow control=120ns Commands/features: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Enabled Supported: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; SMART feature set &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; Power Management feature set &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; Write cache
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; Look-ahead &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; WRITE_BUFFER command &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; READ_BUFFER command &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; NOP cmd &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; DOWNLOAD_MICROCODE &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Power-Up In Standby feature set
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; SET_FEATURES required to spinup after power up &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; 48-bit Address feature set &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; Device Configuration Overlay feature set &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; Mandatory FLUSH_CACHE &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; FLUSH_CACHE_EXT
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; SMART error logging &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; SMART self-test &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; General Purpose Logging feature set &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; WRITE_{DMA|MULTIPLE}_FUA_EXT &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; SATA-I signaling speed (
1.5Gb/s) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; SATA-II signaling speed (3.0Gb/s) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; Native Command Queueing (NCQ) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; Phy event counters &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; DMA Setup Auto-Activate optimization &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Device-initiated interface power management
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *&nbsp;&nbsp;&nbsp; Software settings preservation Security: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Master password revision code = XXXX4 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 146min for SECURITY ERASE UNIT. Checksum: correct [root at Mitchell_mc myth]# From what i can tell it does.&nbsp; So what am i doing wrong?
 Thanks, Mitchell

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