[mythtv-users] ECS Liva for frontend - brief report

[Karl Newman]

On Fri, Jan 2, 2015 at 9:02 AM, Josu Lazkano <josu.lazkano at gmail.com> wrote:

> Thanks Karl,
>
> I mean about mount options like "discard":
> https://wiki.debian.org/SSDOptimization#Mounting_SSD_filesystems
>
> I never use eMMC disk, with SSD disk, there is a limited write access,
> so it is important to not write every time. What about the logs? Do
> you write logs in the Liva? I use to start mythfrontend this way:
> "/usr/bin/mythfrontend --loglevel info --syslog local6"
>

This is my first SSD device also. From that link, it says that discard is
not necessary if you have enough spare space. In my case I have used only
5.6 GiB of the 32 GB drive so I think that's enough overprovisioning. You
can always run fstrim manually (as root) to perform the erase function and
speed up your drive (if necessary). Yes I have logging enabled, similar to
yours.

Honestly I wouldn't worry about wearing out the drive. Here's an
interesting link to an SSD torture/longevity test:
http://techreport.com/review/25681/the-ssd-endurance-experiment-testing-data-retention-at-300tb
The upshot is that SSDs will likely last a hell of a long time. I really
wouldn't expect mythfrontend logs to really stress the drive.

>
> I have a power meter device, in idle it consume 4.6W, 10W in playback.
> It is very low.
>

You may not have all the power saving options enabled or configured
correctly, because Dave (see other thread in the list about
frontend/backend combo) reported around 5 W idle before tweaking all the
power options, which then dropped to 1 W.

Karl
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