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On 9/26/05, Volker Armin Hemmann <volker.armin.hemmann@××××××××××××.de> wrote: |
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> On Monday 26 September 2005 16:59, Mark Knecht wrote: |
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> |
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> > "Any disk activity seems to be the main cause of xruns on this machine." |
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> > |
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> > If I get xruns (a failure mode of Jack-Audio-Connection-Kit running |
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> > on this hardware) then the machine is useless doing the sort of Linux |
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> > audio work I want to do so this is the problem I'm trying to solve. |
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> > That's my only goal. |
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> |
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> have you checked that 'unmaskirq' is set for your harddisk? |
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> |
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> hdparm /dev/hda should look like this: |
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> hdparm /dev/hda |
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> |
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> /dev/hda: |
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> multcount = 16 (on) |
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> IO_support = 1 (32-bit) |
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> unmaskirq = 1 (on) |
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> using_dma = 1 (on) |
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> keepsettings = 0 (off) |
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> readonly = 0 (off) |
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> readahead = 256 (on) |
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> geometry = 16383/255/63, sectors = 234493056, start = 0 |
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> |
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> not this: |
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> hdparm /dev/hda |
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> |
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> /dev/hda: |
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> multcount = 0 (off) |
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> IO_support = 0 (default 16-bit) |
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> unmaskirq = 0 (off) |
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> using_dma = 1 (on) |
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> keepsettings = 0 (off) |
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> readonly = 0 (off) |
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> readahead = 256 (on) |
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> geometry = 16383/255/63, sectors = 234493056, start = 0 |
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|
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Only problem is these are SATA drives and they don't tell me much |
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compared to EIDE drives when using hdparm. Also their error messages |
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running hdparm are a bit of a concern, although typical from what I've |
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read. |
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|
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lightning ~ # hdparm /dev/sda |
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|
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/dev/sda: |
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IO_support = 0 (default 16-bit) |
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readonly = 0 (off) |
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readahead = 256 (on) |
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geometry = 30401/255/63, sectors = 250059350016, start = 0 |
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lightning ~ # |
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lightning ~ # hdparm -tT /dev/sda |
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|
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/dev/sda: |
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Timing cached reads: 2040 MB in 2.00 seconds = 1018.12 MB/sec |
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HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate |
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ioctl for device |
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Timing buffered disk reads: 198 MB in 3.02 seconds = 65.62 MB/sec |
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HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate |
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ioctl for device |
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lightning ~ # |
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|
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Thanks, |
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Mark |
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|
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-- |
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