SSD seems slow

[guzilli]

Hi,

just bought a Kingston SSD 120GB. Installed Ubuntu 14.04 on it, but i think the drive is slow. Booting takes about 30-40 seconds and after the desktop appears i cant start anything for about 20 seconds. Also in games like Witcher 2, i have the feeling that the textures wont load fast enough.

My Specs:

Ubuntu 14.04 64Bit
AMD Athlon 64 X2 Dual Core 6400+
Asus M2N32-SLI Deluxe/Wireless Edition
6 GIG Ram DDR2 
Geforce GTX 750 
Kingston SSD 120GB

I know my board doesnt support AHCI Mode, but is this really such a huge difference? When i test the drive i get these results:

sudo hdparm -tT /dev/sda

/dev/sda:
 Timing cached reads:   2784 MB in  2.00 seconds = 1393.34 MB/sec
 Timing buffered disk reads:  64 MB in  3.05 seconds =  20.97 MB/sec

[curaga]

Those results are really, really shitty. My five years old laptop HDD beats it.

Timing cached reads: 6830 MB in 2.00 seconds = 3416.28 MB/sec
Timing buffered disk reads: 182 MB in 3.00 seconds = 60.58 MB/sec

Not using AHCI either, native driver.

[guzilli]

Okey, so i know for sure its way too slow. Now to find how to fix this :/

[curaga]

Return it and buy a HDD

[guzilli]

Switched back to my HDD and with it i get these results:

/dev/sda:
 Timing cached reads:   2604 MB in  2.00 seconds = 1303.68 MB/sec
 Timing buffered disk reads: 228 MB in  3.02 seconds =  75.41 MB/sec

Not much of a difference to me

[pete910]

Something seriously wrong there.

here's mine (OCZ Vertex 4)

[root@com1 ~]# hdparm -tT /dev/sda

/dev/sda:
 Timing cached reads:   38032 MB in  2.00 seconds = 19037.15 MB/sec
 Timing buffered disk reads: 1164 MB in  3.00 seconds = 387.43 MB/sec
[root@com1 ~]#

[TheSoulz]

Your probably limited by other hardware like cpu oe motherboard (bottleneck).
if your board does not support ACHI it must be really old so im asumming you're...
My 7 year old motherboard has it :P

Also make sure you dont use EXT4 on a SSD try BTRFS or something newer that supports SSD's.

[Kano]

hdparm does not test filesystems and i see no reason why ext4 would be bad. The SATA controler is just fully outdated, you could try to get a pci-e controller instead or just replace the board.

[prodigy_]

387.43 MB/sec

That's very close to max throughput of a 3Gbps controller. Are you sure your SSD isn't attached to a 3Gbps SATA port? On a 6Gbps port you should see a higher result - something close to 500MB/sec.

[prodigy_]

As for the OP's case - Kingston SSDs are frustratingly slow but 20MB/s isn't right even for them. First thing to do: check that BIOS and SSD firmware are up to date.