Re: SSD Optimization and tweaks - Looking for tips/recomendations

[gene heskett]

On 6/28/22 19:30, David Wright wrote:

On Tue 28 Jun 2022 at 14:17:36 (-0400), Michael Stone wrote:

On Tue, Jun 28, 2022 at 02:25:36PM -0300, Marcelo Laia wrote:

4. Any other recommendations to improve the performance and lifespan of this 
disk?

don't worry about it; accept the defaults and you'll be fine

I don't remember there being a default for overprovisioning
besides the so-called inherent 7%. Any recommendations?

Cheers,
David.
I've had no further card losses in my rpi since moving to a 64 gig u-sd 
for its boot, despite
the fact that around a 100 megs a day gets over-written in keeping up 
with the development
branch of linuxcnc's master git repo. My basic theory is that if the 
card has enough room to
do its thing the card will last quite some time, It nearly 5 years old 
now. Whats on it is around
13G, and if I was still running from a 16G, I would probably have 
destroyed 2 a year with that
amount of traffic in what would have to be considered cramped space.  
Give an SSD room to

do its thing and you'll be thanked.


.



Cheers, Gene Heskett.
--
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 

Re: SSD Optimization and tweaks - Looking for tips/recomendations

[David Wright]

On Tue 28 Jun 2022 at 14:17:36 (-0400), Michael Stone wrote:
> On Tue, Jun 28, 2022 at 02:25:36PM -0300, Marcelo Laia wrote:
> > 4. Any other recommendations to improve the performance and lifespan of 
> > this disk?
> 
> don't worry about it; accept the defaults and you'll be fine

I don't remember there being a default for overprovisioning
besides the so-called inherent 7%. Any recommendations?

Cheers,
David.

Re: SSD Optimization and tweaks - Looking for tips/recomendations

[Alexander V. Makartsev]

On 28.06.2022 22:25, Marcelo Laia wrote:

Hi,

I bought a SSD solid disk and will perform a fresh install on it. Debian 
testing. I've never used such a disc.

I bought a Crucial CT1000MX500SSD1 (1TB 3D NAND Crucial SATA MX500 Internal SSD 
(with 9.5mm adapter) — 6.35cm (2.5in) and 7mm).

I read the recommendations on the https://wiki.debian.org/SSDOptimization page.

However, I still have some doubts:

1. Use ext4 or LVM partitioning?
One is a filesystem and the other is a partition technology, a 
completely different thing.
My recommendation is to use whatever you are comfortable and experienced 
with.
Unless of course you feel adventurous and want to learn new things and 
use extra features. More about that below.



2. I read in the Warnming section that some discs contain bugs, including Crucial. But I don't know 
if I need to use or not use "discard" on this disk (CT1000MX500SSD1). If I need to 
proceed with use "discard", would you please have any tips on how to do it? I didn't 
understand how to do this.
Most of those warnings are outdated and nowadays all major SSD 
manufacturers have developed stable firmware for their products.
Personally, I don't use "discard" mount option, instead I manually run 
"fstrim" utility once a few months.
But, my SSD serves me as a system disk and that is not a write-intensive 
workload.



3. Should I reserve a swap partition or not? I always had one on hdd disks. I 
was in doubt, too.
Yes, you should. The difference in performance will be noticeable, 
whenever your system would resort to swap usage.



4. Any other recommendations to improve the performance and lifespan of this 
disk?
A performance improvement is a complex task and in some cases could be 
impossible due to hardware limits of the host or the SSD device itself.
On modern system with SATA3 interface, there is not much you can do to 
increase a performance of SSD, other than optimizing your workloads and 
maybe choosing among different flash-optimized filesystems.
I'd recommend to check out a somewhat recent Phoronix article¹ about 
filesystem benchmarks.
And then again it depends on your workload if these optimizations even 
worth doing and the time spent learning a new techs.


So the bottom line is, if your workload is low, then you should stop 
worrying and simply enjoy your new SSD.
It will last for many years and probably will be moved to a newly build 
PC to serve as an additional storage device there.



Thank you!



¹ : 
https://www.phoronix.com/scan.php?page=article&item=linux-58-filesystems&num=1


--
With kindest regards, Alexander.

⢀⣴⠾⠻⢶⣦⠀
⣾⠁⢠⠒⠀⣿⡁ Debian - The universal operating system
⢿⡄⠘⠷⠚⠋⠀ https://www.debian.org
⠈⠳⣄

Re: SSD Optimization and tweaks - Looking for tips/recomendations

[Linux-Fan]

Marcelo Laia writes:


Hi,

I bought a SSD solid disk and will perform a fresh install on it. Debian  
testing. I've never used such a disc.


I bought a Crucial CT1000MX500SSD1 (1TB 3D NAND Crucial SATA MX500 Internal  
SSD (with 9.5mm adapter) — 6.35cm (2.5in) and 7mm).


I read the recommendations on the https://wiki.debian.org/SSDOptimization  
page.


However, I still have some doubts:



1. Use ext4 or LVM partitioning?


You could do both at once, too. See the other users' answers.

2. I read in the Warnming section that some discs contain bugs, including  
Crucial. But I don't know if I need to use or not use "discard" on this disk  
(CT1000MX500SSD1). If I need to proceed with use "discard", would you please  
have any tips on how to do it? I didn't understand how to do this.


IIRC the best practice was to not use the "discard" mount option and rather  
run "fstrim" at regular intervals. You could use the `fstrim.timer` systemd  
unit from package util-linux for that purpose.


3. Should I reserve a swap partition or not? I always had one on hdd disks.  
I was in doubt, too.


If you want to have a swap partition, it is perfectly OK to create one on an  
SSD. In fact, I have sometimes used SSD swap to my advantage. Today its  
mostly a matter of personal preference.


4. Any other recommendations to improve the performance and lifespan of this  
disk?


The wiki page is already pretty comprehensive. On my systems I mostly do the  
“Reduction of SSD write frequency via RAMDISK” thing.


As with all disks, it can help to setup S.M.A.R.T. monitoring. For SSDs, a  
metric like “liftime GiB written” or something similar is often included.  
This can be used to reveal if your system is doing a lot of writes or not by  
checking the changes of the value over time (e.g. with help from `smartd`  
from package smartmontools).


HTH and YMMV
Linux-Fan

öö


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Description: PGP signature

Re: SSD Optimization and tweaks - Looking for tips/recomendations

[Michael Stone]

On Tue, Jun 28, 2022 at 02:25:36PM -0300, Marcelo Laia wrote:

4. Any other recommendations to improve the performance and lifespan of this 
disk?


don't worry about it; accept the defaults and you'll be fine

SSD Optimization and tweaks - Looking for tips/recomendations

[Marcelo Laia]

Hi,

I bought a SSD solid disk and will perform a fresh install on it. Debian 
testing. I've never used such a disc.

I bought a Crucial CT1000MX500SSD1 (1TB 3D NAND Crucial SATA MX500 Internal SSD 
(with 9.5mm adapter) — 6.35cm (2.5in) and 7mm).

I read the recommendations on the https://wiki.debian.org/SSDOptimization page.

However, I still have some doubts:

1. Use ext4 or LVM partitioning?

2. I read in the Warnming section that some discs contain bugs, including 
Crucial. But I don't know if I need to use or not use "discard" on this disk 
(CT1000MX500SSD1). If I need to proceed with use "discard", would you please 
have any tips on how to do it? I didn't understand how to do this.

3. Should I reserve a swap partition or not? I always had one on hdd disks. I 
was in doubt, too.

4. Any other recommendations to improve the performance and lifespan of this 
disk?

Thank you!

-- 
Marcelo