dev/sda1 on / type ext4 (rw,noatime, nodiratime, errors= remount- mount | grep sdb (parted) cat /sys/block/ sd /queue/ scheduler Welcome to GNU Parted! Type 'help' to view a list of commands. I/O size (minimum/optimal): 512 bytes / 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes Timing buffered disk reads: 508 MB in 3.03 seconds = 167.49 MB/sec ![]() Timing buffered disk reads: 500 MB in 3.32 seconds = 150.61 MB/sec Timing buffered disk reads: 500 MB in 3.01 seconds = 166.36 hdparm -t /dev/sdb & hdparm -t /dev/sdb & hdparm -t /dev/sdb Timing buffered disk reads: 530 MB in 3.03 seconds = 174.86 MB/sec Timing buffered disk reads: 470 MB in 3.01 seconds = 156.33 MB/sec Timings of devices (which is also 4x slower than hdparm -t /dev/sda & hdparm -t /dev/sda & hdparm -t /dev/sda The reason that I use a 32-bit OS is because most of the applications I use on my laptop are propriety software that only exists in 32-bit versions. The only think that helps is telling the kernel only to address 8GB RAM using the "mem=8GB" kernel option, but that is obviously not a solution when I need to utilize all the 32GB RAM that I have. I've also tried to update to the proposed updates, and updated to kernel 3.13.0-30.54, but problem still exists there. I've tested with mechanical hard drives, and the problem also occurs there. I'm also using the lowlatency kernel, but using the generic kernel doesn't have any effect. I'm using the deadline scheduler, but it doesn't matter which one I use. But after waiting 4 hours for it to install, I finally lost patience, and stopped the installation. I've also tried to make a fresh installation of Ubuntu 14.04 on a spare SSD drive of mine to see if its because I upgraded from 12.04. ![]() ![]() However the performance of my drives was even better better than using Ubuntu 12.04. I've tested with the latest version of System Rescue CD (4.2.0 at this time) to see if was a hardware problem. After upgrading my Ubuntu 32-bit from 12.04 to 14.04 the write performance is painfully slow (less than 4.6MB/s) of both my SSD drives.
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