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Re: Hard drive speed

PostPosted: Sun Jul 31, 2011 8:49 pm
by Goliath
Thank for the welcome love playing with Ultimate Edition theemahn has helped me alot with getting use to this site.

Re: Hard drive speed

PostPosted: Fri Sep 16, 2011 2:19 am
by Goliath
New drive in favor of space not speed for the better half.
Goliath-lucid-20110915-5.png
OCZ VERTEX 3

Re: Hard drive speed

PostPosted: Sun Mar 18, 2012 12:00 am
by TheeMahn
Took The giant down ;)
Code: Select all
theemahn@JackHammer:~$ sudo hdparm -T /dev/mapper/pdc_ddaaifcejh3

/dev/mapper/pdc_ddaaifcejh3:
 Timing cached reads:   7206 MB in  2.00 seconds = 3604.17 MB/sec
theemahn@JackHammer:~$


Code: Select all
theemahn@JackHammer:~$ sudo hdparm --direct -tT /dev/mapper/pdc_ddaaifcejh3

/dev/mapper/pdc_ddaaifcejh3:
 Timing O_DIRECT cached reads:   1574 MB in  2.00 seconds = 786.40 MB/sec
 Timing O_DIRECT disk reads: 2320 MB in  3.00 seconds = 772.99 MB/sec
theemahn@JackHammer:~$ sudo hdparm -T /dev/mapper/pdc_ddaaifcejh3


8 core dropped in, yes it does make a difference:
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theemahn@JackHammer:~$ sudo hdparm -T /dev/mapper/pdc_ehbahhbeb

/dev/mapper/pdc_ehbahhbeb:
 Timing cached reads:   9040 MB in  2.00 seconds = 4522.48 MB/sec
theemahn@JackHammer:~$ sudo hdparm --direct -tT /dev/mapper/pdc_ehbahhbeb

/dev/mapper/pdc_ehbahhbeb:
 Timing O_DIRECT cached reads:   1628 MB in  2.00 seconds = 813.65 MB/sec
 Timing O_DIRECT disk reads:  2422 MB in  3.00 seconds = 806.71 MB/sec
theemahn@JackHammer:~$

Re: Hard drive speed

PostPosted: Mon Aug 05, 2013 1:12 am
by TheeMahn
Alot has changed, will keep posting as hardware is upgraded etc.

New Mainboard: ASUS Sabertooth 990FX TUF (The Ultimate Force)
New SSD: Adata SP900 256GB
New Raid Configuration: 2 X Seagate 2TB Baracudas
Single Adata SSD (sudo hdparm -T /dev/sda1):
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/dev/sda1:
 Timing cached reads:   9644 MB in  2.00 seconds = 4825.96 MB/sec


Overall (sudo hdparm -t /dev/sda1):
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/dev/sda1:
 Timing buffered disk reads: 1170 MB in  3.00 seconds = 389.84 MB/sec

Disk utility reports things much differently, 570MB/s read avg and 460MB/s write avg.

This is truely amazing, I have taken 2 Seagate mechanical hard disks and raided them, I would venture to say if I added a third would smoke any SSD and be 6 Terabytes in size. The cost for a 6TB SSD? Oh, that's right no such thing ;)

Moving files from the Adata SSD to the raided Seagates:
raidup.png

A ton can be said here, you can pretty much rest assured the speed you see is true speed and not a synthetic benchmark. Real time performance. While numbers may look good, time is the true factor I can right click a file that is 3GB up to 4GB and paste it to that drive and not even see a progress bar come up. Instantaneous transfer minus cache handling. Seek time however is a new ballgame, grab 100,000 files that are tiny and you will be making coffee while you wait ;)
Code: Select all
theemahn@JackHammer:/media/4TBRaid0/Copy/Websites$ sudo hdparm -t /dev/md0

/dev/md0:
 Timing buffered disk reads: 898 MB in  3.00 seconds = 298.98 MB/sec


Sata 6.0gb/s or Sata 3 has it's limitations as well, now being topped out via SSD. The 570MB/s I can physically see by the Adata SSD is a limitation of Sata 3 and probably not the SSD itself. Technology has blown up since my first post here, limitations still remain that are of hardware. Today the fastest SSD due to the bottleneck of SATA 3 is still garbage. The slowest component in your computer is as fast as your computer can go. Still hard drives years later. Random Access Memory (RAM) moves at todays standards of Gigabytes a sec, not Megabytes. Let me raid 10 SSD's to put things in perspective. With the additional add-on raid controller, I can hook 14 drives up raided, across 3 independant controllers... Windows would say what F$k is this? Linux would say let's roll ;)

While I am on a roll here and subject of technology, the strike-thru in my signature is because they feel IDE is a thing of the past even though I have a $180+ Plextor DVD burner, now written off as junk via thier disgression.

Re: Hard drive speed

PostPosted: Mon Aug 05, 2013 3:55 am
by pam
:vil2_nouvelles

Yes its a shame, Nothing has improved when it comes to storage.
<BREW>