Hello,
To share some other experience with my WDC WD15EARS-00z5b1.
The HD appears to be working fine, but I do feel it slow when the HD is busy (i.e. LED is blinking) in Linux
Every time the HD LED is blinking, the KDE4 window (e.g. konsole, firefox, dolphine, etc) becomes lagging.
I also try to add ionice (ionice -c2 -n6 -p$$) in the startkde script (/usr/bin/startkde), but the lagging still does not disappear.
This lagging is annoying especially when I need to copy/create big files (~1GB) few times, or schedule the script using cronjob.
My KDE GUI will look like totally locked-up and I cannot do anything like browsing, typing, etc.
I can only sit and wait until the copy process completes…
Not sure what causes the lagging.
The hdparm indicates the HD speed is normal:
--------------------------------------------------------------------
# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 3526 MB in 2.00 seconds = 1762.88 MB/sec
Timing buffered disk reads: 260 MB in 3.00 seconds = 86.55 MB/sec
--------------------------------------------------------------------
# hdparm -tT /dev/sda2
/dev/sda2:
Timing cached reads: 3498 MB in 2.00 seconds = 1749.48 MB/sec
Timing buffered disk reads: 258 MB in 3.00 seconds = 85.88 MB/sec
--------------------------------------------------------------------
# hdparm -tT /dev/sda3
/dev/sda3:
Timing cached reads: 3414 MB in 2.00 seconds = 1706.68 MB/sec
Timing buffered disk reads: 244 MB in 3.02 seconds = 80.83 MB/sec
--------------------------------------------------------------------
# hdparm -tT /dev/sda5
/dev/sda5:
Timing cached reads: 3318 MB in 2.00 seconds = 1658.71 MB/sec
Timing buffered disk reads: 200 MB in 3.01 seconds = 66.42 MB/sec
--------------------------------------------------------------------
# hdparm -tT /dev/sda6
/dev/sda6:
Timing cached reads: 3498 MB in 2.00 seconds = 1748.53 MB/sec
Timing buffered disk reads: 134 MB in 3.04 seconds = 44.09 MB/sec
--------------------------------------------------------------------
My partition layouts are:
-
/dev/sda1 = ntfs (win7 hidden system partition)
-
/dev/sda2 = ntfs (win7 64-bit)
-
/dev/sda3 = ntfs (for data)
-
/dev/sda4 = extended partition
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/dev/sda5 = ext4 (Suse 11.2 64-bit, kernel 2.6.31.5)
-
/dev/sda6 = linux swap
# fdisk -l
Disk /dev/sda: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xdb9a692f
Device Boot Start End Blocks Id System
/dev/sda1 1 13 102400 7 HPFS/NTFS
Partition 1 does not end on cylinder boundary.
/dev/sda2 13 50555 405972376 7 HPFS/NTFS
/dev/sda3 50555 115826 524288000 7 HPFS/NTFS
/dev/sda4 * 115827 182401 534763687+ f W95 Ext’d (LBA)
/dev/sda5 115827 181097 524289276 83 Linux
/dev/sda6 181098 182401 10474348+ 82 Linux swap / Solaris
My system specs:
Athlon II X2 235e (dual core 2.7GHz), 4GB RAM DDR3, AMD RS780MN chipset, Nvidia Geforce G210