Тормозит комп при копировании и чтении файлов с флешак и дисков в debian test

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/dvd 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 max visible number of sectors (HPA) (VERY DANGEROUS)
 -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 queue_depth (if supported)                      
 -r   get/set device  readonly flag (DANGEROUS to set)            
 -R   obsolete                                                    
 -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   obsolete
 -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   obsolete
 -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
 --dco-freeze      freeze/lock current device configuration until next power cycle
 --dco-identify    read/dump device configuration identify data
 --dco-restore     reset device configuration back to factory defaults
 --direct          use O_DIRECT to bypass page cache for timings
 --drq-hsm-error   crash system with a "stuck DRQ" error (VERY DANGEROUS)
 --fibmap          show device extents (and fragmentation) for a file
 --fibmap-sector   show absolute LBA of a specfic sector of a file
 --fwdownload      Download firmware file to drive (EXTREMELY DANGEROUS)
 --idle-immediate  idle drive immediately
 --idle-unload     idle immediately and unload heads
 --Istdin          read identify data from stdin as ASCII hex
 --Istdout         write identify data to stdout as ASCII hex
 --make-bad-sector deliberately corrupt a sector directly on the media (VERY DANGEROUS)
 --prefer-ata12    use 12-byte (instead of 16-byte) SAT commands when possible
 --read-sector     read and dump (in hex) a sector directly from the media
 --security-help   display help for ATA security commands
 --verbose         display extra diagnostics from some commands
 --write-sector    repair/overwrite a (possibly bad) sector directly on the media (VERY DANGEROUS)

anton@tiger:~$ cat /etc/mtab /dev/sda7 / ext3 rw,errors=remount-ro 0 0 tmpfs /lib/init/rw tmpfs rw,nosuid,mode=0755 0 0 proc /proc proc rw,noexec,nosuid,nodev 0 0 sysfs /sys sysfs rw,noexec,nosuid,nodev 0 0 udev /dev tmpfs rw,mode=0755 0 0 tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0 devpts /dev/pts devpts rw,noexec,nosuid,gid=5,mode=620 0 0 /dev/sda8 /home ext3 rw 0 0 fusectl /sys/fs/fuse/connections fusectl rw 0 0 /dev/sdb1 /media/usb0 vfat rw,noexec,nosuid,nodev,iocharset=utf8,user=anton 0 0

anton@tiger:~$ sudo hdparm -d /media/usb0

/media/usb0: HDIO_GET_DMA failed: Inappropriate ioctl for device 

anton@tiger:~$ sudo hdparm -d /dev/sdb

/dev/sdb:
 HDIO_GET_DMA failed: Invalid argument

anton@tiger:~$ sudo hdparm -d /dev/Volume
/dev/Volume: No such file or directory

/dev/sdb:
 Timing cached reads:   1288 MB in  2.00 seconds = 643.97 MB/sec
 Timing buffered disk reads:   16 MB in  3.22 seconds =   4.97 MB/sec