If one enables hdparm DVD playback will not be jumpy, however when applying hdparm I get
[root@localhost ~]# hdparm -d1 /dev/cdrom
/dev/cdrom:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
[root@localhost ~]# hdparm -d1 /dev/sr0
/dev/sr0:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
[root@localhost ~]# hdparm -d1 /dev/sr1
/dev/sr1:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
[root@localhost ~]#
CPU goes to 99 - 100%, and playback of movie slows down tremendously. How can I enable hdparm like the good old days, or is there something else that can take care of that.
attached meminfo/cpuinfo in case it is relevant to the hdparm question.
[olivares@localhost ~]$ cat /proc/meminfo
MemTotal: 767504 kB
MemFree: 66888 kB
Buffers: 23948 kB
Cached: 337400 kB
SwapCached: 0 kB
Active: 451464 kB
Inactive: 168608 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 767504 kB
LowFree: 66888 kB
SwapTotal: 3114416 kB
SwapFree: 3114340 kB
Dirty: 76 kB
Writeback: 0 kB
AnonPages: 258720 kB
Mapped: 87844 kB
Slab: 64896 kB
SReclaimable: 22800 kB
SUnreclaim: 42096 kB
PageTables: 4892 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 3498168 kB
Committed_AS: 682684 kB
VmallocTotal: 245752 kB
VmallocUsed: 4488 kB
VmallocChunk: 241088 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 4096 kB
[olivares@localhost ~]$ cat /proc/meminfo
MemTotal: 767504 kB
MemFree: 67028 kB
Buffers: 23960 kB
Cached: 337424 kB
SwapCached: 0 kB
Active: 451104 kB
Inactive: 168640 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 767504 kB
LowFree: 67028 kB
SwapTotal: 3114416 kB
SwapFree: 3114340 kB
Dirty: 344 kB
Writeback: 0 kB
AnonPages: 258356 kB
Mapped: 87844 kB
Slab: 64896 kB
SReclaimable: 22800 kB
SUnreclaim: 42096 kB
PageTables: 4892 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 3498168 kB
Committed_AS: 682244 kB
VmallocTotal: 245752 kB
VmallocUsed: 4488 kB
VmallocChunk: 241088 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 4096 kB
[olivares@localhost ~]
[root@localhost ~]# hdparm --help
hdparm - get/set hard disk parameters - version v7.7
Usage: hdparm [options] [device] ..
Options:
-a get/set fs readahead
-A get/set the drive look-ahead flag (0/1)
-b get/set bus state (0 == off, 1 == on, 2 == tristate)
-B set Advanced Power Management setting (1-255)
-c get/set IDE 32-bit IO setting
-C check drive power mode status
-d get/set using_dma flag
-D enable/disable drive defect management
-E set cd-rom drive speed
-f flush buffer cache for device on exit
-F flush drive write cache
-g display drive geometry
-h display terse usage information
-H read temperature from drive (Hitachi only)
-i display drive identification
-I detailed/current information directly from drive
-k get/set keep_settings_over_reset flag (0/1)
-K set drive keep_features_over_reset flag (0/1)
-L set drive doorlock (0/1) (removable harddisks only)
-M get/set acoustic management (0-254, 128: quiet, 254: fast)
-m get/set multiple sector count
-n get/set ignore-write-errors flag (0/1)
-p set PIO mode on IDE interface chipset (0,1,2,3,4,...)
-P set drive prefetch count
-q change next setting quietly
-Q get/set DMA tagged-queuing depth (if supported)
-r get/set device readonly flag (DANGEROUS to set)
-R register an IDE interface (DANGEROUS)
-s set power-up in standby flag (0/1) (DANGEROUS)
-S set standby (spindown) timeout
-t perform device read timings
-T perform cache read timings
-u get/set unmaskirq flag (0/1)
-U un-register an IDE interface (DANGEROUS)
-v defaults; same as -acdgkmur for IDE drives
-V display program version and exit immediately
-w perform device reset (DANGEROUS)
-W get/set drive write-caching flag (0/1)
-x tristate device for hotswap (0/1) (DANGEROUS)
-X set IDE xfer mode (DANGEROUS)
-y put drive in standby mode
-Y put drive to sleep
-Z disable Seagate auto-powersaving mode
-z re-read partition table
--direct use O_DIRECT to bypass page cache for timings
--Istdin read identify data from stdin as ASCII hex
--Istdout write identify data to stdout as ASCII hex
--verbose display extra diagnostics from some commands
--security-help display help for ATA security commands
--drq-hsm-error crash system with a "stuck DRQ" error (VERY DANGEROUS)
[root@localhost ~]#
Please advice me of a way to get hdparm to work, or to get good dvd playback without the CPU going to 99% everytime.
Regards,
Antonio
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