Transcend StoreJet 25M3 2TB Groen

Schrijf snelheden:
# sync; dd if=/dev/zero of=tempfile bs=1K count=1024; sync
1048576 bytes (1,0 MB, 1,0 MiB) copied, 0,0356653 s, 29,4 MB/s
# sync; dd if=/dev/zero of=tempfile bs=10K count=1024; sync
10485760 bytes (10 MB, 10 MiB) copied, 0,080506 s, 130 MB/s
# sync; dd if=/dev/zero of=tempfile bs=1M count=1024; sync
1073741824 bytes (1,1 GB, 1,0 GiB) copied, 6,57407 s, 163 MB/s
# sync; dd if=/dev/zero of=tempfile bs=100M count=1024; sync
107374182400 bytes (107 GB, 100 GiB) copied, 974,549 s, 110 MB/s

Lezen uit buffer:
# dd if=tempfile of=/dev/null bs=1M count=1024
1073741824 bytes (1,1 GB, 1,0 GiB) copied, 9,61062 s, 112 MB/s

Echte lees snelheden:
# /sbin/sysctl -w vm.drop_caches=3
vm.drop_caches = 3
# dd if=tempfile of=/dev/null bs=1M count=1024
1024+0 records in
1024+0 records out
1073741824 bytes (1,1 GB, 1,0 GiB) copied, 9,51168 s, 113 MB/s

hdparm:
Timing cached reads: 25170 MB in 1.99 seconds = 12666.32 MB/sec
Timing buffered disk reads: 630 MB in 3.01 seconds = 209.49 MB/sec

Gnome disks:








Schijf: