Page 5 of 6 FirstFirst ... 3456 LastLast
Results 41 to 50 of 59

Thread: Tell us about your SSD experience.

  1. #41
    Join Date
    Jan 2008
    Beans
    21

    Re: Tell us about your SSD experience.

    I've just installed Maverick on an OCZ Vertex2 60Go. The result is awesome. My PC boots in 7s (not counting BIOS start-up) and everything is much faster than before.
    You don't need to worry about all those alignment issues with Maverick since the partitioner during the install process automatically aligns the partitions properly (with either automatic or manual partitioning).
    I just put /tmp in a tmpfs and /var/log on another partition on a classic HD to reduce the number of writings and added discard (to enable TRIM) and noatime (no read access date update) in the fstab for the same reason.

  2. #42
    Join Date
    Jan 2010
    Location
    /usr/share/your_fridge
    Beans
    1,564
    Distro
    Xubuntu 10.04 Lucid Lynx

    Re: Tell us about your SSD experience.

    I thought very few drives had TRIM support?

    LOL, mine has it done OS independently
    "Meddle not with roos; thou art crunchy and grasshopper-like" ※The SABRFL※

    Last edited by ubunterooster; 1 Minute ago

  3. #43
    Join Date
    Jan 2008
    Beans
    21

    Re: Tell us about your SSD experience.

    Well, most recent SSD do have TRIM support now.
    I'm not an expert but my understanding is that TRIM on an SSD cannot be OS indenpendant. I've read quite a bit on the subject and with Ubuntu, you have to have an ext4 partition, a kernel >=2.6.33 and the partition mounted with the discard option in the fstab to enable on the fly TRIM. Check:
    http://ubuntuforums.org/showthread.php?t=1463870
    http://ubuntuforums.org/showthread.php?t=1596214

  4. #44
    Join Date
    Jan 2010
    Location
    /usr/share/your_fridge
    Beans
    1,564
    Distro
    Xubuntu 10.04 Lucid Lynx

    Re: Tell us about your SSD experience.

    Quote Originally Posted by lolobu View Post
    I'm not an expert but my understanding is that TRIM on an SSD cannot be OS independent.
    I use a PCIe SSD that has its own OS built into the drive that has to boot before I can boot my OS. That and the four indilux controllers (yes, four) make it a very quirky type of drive. That Built-in OS really slows the boot process, but once booted, it is blistering fast. I have seen others wonder if the built-in OS made for a security vulnerability but I have not found evidence to support that.
    "Meddle not with roos; thou art crunchy and grasshopper-like" ※The SABRFL※

    Last edited by ubunterooster; 1 Minute ago

  5. #45
    Join Date
    Dec 2005
    Beans
    1,171
    Distro
    Ubuntu 10.10 Maverick Meerkat

    Re: Tell us about your SSD experience.

    Quote Originally Posted by ubunterooster View Post
    I thought very few drives had TRIM support?

    LOL, mine has it done OS independently
    Anything second generation with updated firmware can do TRIM. The only stuff that wouldn't would be the crap SSD from 2008 and before. TRIM doesn't work in RAID either.

    Indilinx (2009), Intel (November 2009), probably the newer jmicron drives from 2009. And anything in 2010 would have TRIM. Most sellers have updated firmware available.

  6. #46
    Join Date
    Oct 2004
    Beans
    30

    Re: Tell us about your SSD experience.

    All drives are encrypted with twofish 256 dmcrypt

    ssd OCZ vertex 2 60GB
    fstab has defaults,noatime,discard
    is /
    sudo hdparm -t /dev/sdd
    /dev/sdd:
    Timing buffered disk reads: 472 MB in 3.01 seconds = 157.02 MB/sec

    sata2 WD20EADS Green 2TB
    /dev/sda:
    Timing buffered disk reads: 304 MB in 3.01 seconds = 101.01 MB/sec

    sata3 WD1002FEAX 1TB
    /dev/sdb:
    Timing buffered disk reads: 386 MB in 3.01 seconds = 128.18 MB/sec

    sata3 WD1002FEAX 1TB
    /dev/sdc:
    Timing buffered disk reads: 372 MB in 3.01 seconds = 123.75 MB/sec

  7. #47
    Join Date
    Mar 2007
    Beans
    55
    Distro
    Ubuntu 10.10 Maverick Meerkat

    Re: Tell us about your SSD experience.

    hi, sorry but I got a little bit confused by the previous posts, I've got a OCZ SSD 120GB Vertex 2 and I want to install ubuntu 10.10 on it, so will I have to enable TRIM or do something to increase the performance, or using a ext4 filesystem is enough? Thanks

    edit: Thanks lolobu
    Last edited by obbe; November 20th, 2010 at 12:40 AM.

  8. #48
    Join Date
    Jan 2008
    Beans
    21

    Re: Tell us about your SSD experience.

    Install Ubuntu 10.10 with an ext4 file system. Once the installation is done, open the file /etc/fstab (with sudo to be able to write in it).
    You should have one line that look like that (UUID value will be different of course):
    Code:
    UUID=4b342141-ef31-43fb-b450-e43044f158f1 /               ext4    errors=remount-ro 0       1
    Just add discard and noatime like that:
    Code:
    UUID=4b342141-ef31-43fb-b450-e43044f158f1 /               ext4    discard,noatime,errors=remount-ro 0       1
    With that, you'll have TRIM support

  9. #49
    Join Date
    Oct 2004
    Location
    Cupertino, CA
    Beans
    5,092
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: Tell us about your SSD experience.

    I'd suggest using relatime instead of noatime -- some applications rely on access times being updated.

    But the relevant option to enable TRIM is discard.
    Quote Originally Posted by tuxradar
    Linux's audio architecture is more like the layers of the Earth's crust than the network model, with lower levels occasionally erupting on to the surface, causing confusion and distress, and upper layers moving to displace the underlying technology that was originally hidden

  10. #50
    Join Date
    Mar 2006
    Beans
    Hidden!

    Re: Tell us about your SSD experience.

    I found a rogue Samsung firmware flasher with TRIM support online that managed to flash my Lenovo Thinkpad SSD via hotplugging and a DOS boot disk.

    After flashing and before copying the data back:



    After rsyncing the system back from backup:



    Anyone have an explanation for the discrepancy in read speed? Is there some kind of compression in place that makes reading zeroes faster? (The upper 25% are all free space I assume)
    Attached Images Attached Images
    Last edited by hugmenot; November 21st, 2010 at 10:15 PM.

Page 5 of 6 FirstFirst ... 3456 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •