Defrag/Trim


Yeah, we're getting a little bit into the weeds here. Strictly speaking, it is true that NVMe does not support a TRIM command. It uses a deallocate command. This is because NVMe and SATA speak different protocols, kind of like comparing Python and C#. The end result is for all intents and purposes the same.
 

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I am interested in whether the nvme drive сontroller has a built in garbage collection function like for sata ssd drives.
Yes - as noted above, the names may be different, but rest assured that NVMe SSDs of course support that same capability. Could you imagine going backwards and having flash media that didn't support this in this day and age?

EDIT: I'm excluding thumb drives from this statement. Yuck, what a horrible and inefficient medium :-)
 

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I'm unaware of any modern SSDs, whether SATA or NVMe that do not have active garbage collection capabilities. I'm tempted to say that nothing like that exists any longer, but in the world of cheap junk and "fake" drive capacities, etc. , I've been proved wrong before.

Any even remotely reputable drive brand will have this capability.
 

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Microsoft fixed that issue (on Win 10), early 2021.

Do you have a reference for that?

I know, from the Event records of my Windows 10 computer, that re-trim is no longer limited to monthly but I had not seen any announcement of a change.


Happy New Year,
Denis
 

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Do you have a reference for that?

I know, from the Event records of my Windows 10 computer, that re-trim is no longer limited to monthly but I had not seen any announcement of a change.


Happy New Year,
Denis


I was referring to the issue with Optimize, where it kept forgetting it had just optimized a few hours before.
Seems the "Never Run" issue I was thinking of, got fixed late 2020, not early 2021.

...and Happy New year. :)
 
Last edited:

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12/24
The storage optimizer successfully completed defragmentation on Storage (D)
The storage optimizer successfully completed retrim on Storage (D)
The storage optimizer successfully completed defragmentation on 11 (C)
The storage optimizer successfully completed retrim on 11 (C)
12/17
The storage optimizer successfully completed defragmentation on Storage (D)
The storage optimizer successfully completed retrim on Storage (D)
The storage optimizer successfully completed defragmentation on 11 (C)
The storage optimizer successfully completed retrim on 11 (C)

Kev has identified a new behaviour. The quoted post indicates that defragmentation [not just re-trim] is being run weekly on his two SSDs. In Windows 10, that would only have run monthly even if Optimization [C:\Windows\System32\dfrgui.exe] had been set to weekly.

In Windows 10 the less-than-straightforward behaviour was described in SSD Trim Windows 10 - TenForums, which cross-refers to the same MS article that Kev's sister found.
- Kev's sister's internal investigation indicates that MS believe that nothing has changed in Windows 10 & that Windows 11 behaves the same way.

What are other people finding?
- The data is in Event viewer, Application log, Source - Defrag.
- Does the description in the General/Details tab record "defragmentation" [rather than just "re-trim"] happening weekly or still just monthly?
- The difference is only distinguished in that event description.
- Re-trim entries will exist weekly.
- My own Windows 11 testbed computer is not being used enough to be a useful example. Even in Windows 10 it never once recorded an SSD defrag taking place and I haven't seen it on my main laptop either [it uses Windows 10].

Denis
 
Last edited:

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If you have a home computer, it is easier to do manual optimization. Remove the disk optimization task.

The task is started as 'SYSTEM' ?
 
Last edited:

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If you have a home computer, it is easier to do manual optimization. Remove the disk optimization task.

The task is started as 'SYSTEM' ?
How is doing it manually easier than just letting it do its job automatically. If you do not want it to be done as frequently, just change setting!
 

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I'm a little bit perplexed by this whole discussion. We are now 31 posts into this thread which started as worries about the frequency of defrag / retrim operations. We've determined that things are working as expected. That should pretty much be the end of it. If some sort of problem was evident or if we were dealing with an unusual use case scenario, then there might be legitimate reasons to change the default behavior.

So far, I've not seen anything presented that would cause one to conclude that there is any problem needing to be addressed here.

If you want to change the default behavior simply for personal preference, by all means, go for it. However, in my opinion, I usually find that settings for system activities such as this are very carefully chosen and would typically suggest simply leaving it alone unless you have a reason to change it. Not everything that can be changed needs to be changed :-).
 

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I'm a little bit perplexed by this whole discussion. We are now 31 posts into this thread which started as worries about the frequency of defrag / retrim operations. We've determined that things are working as expected. That should pretty much be the end of it. If some sort of problem was evident or if we were dealing with an unusual use case scenario, then there might be legitimate reasons to change the default behavior.

That was not quite the issue.

The issue was the apparent change in [default] behaviour compared to Windows 10 & MS's published documentation.

Nobody has "determined that things are working as expected". Things are not "working as expected".
- The OP's OP did not explain what was being experienced. The OP's post #8 was the first to identify the changed behaviour.
- According to MS, defragmenting the SSDs should not have been taking place weekly even though optimization was set to take place weekly.
- I tried to explain this in my post #28 above.

All the best,
Denis
 

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Windows 11 Home x64 Version 25H2 Build 26200.8037
That was not quite the issue.

The issue was the apparent change in [default] behaviour compared to Windows 10 & MS's published documentation.

Nobody has "determined that things are working as expected". Things are not "working as expected".
- The OP's OP did not explain what was being experienced. The OP's post #8 was the first to identify the changed behaviour.
- According to MS, defragmenting the SSDs should not have been taking place weekly even though optimization was set to take place weekly.
- I tried to explain this in my post #28 above.

All the best,
Denis
Who cares - it does not cause any issues trimming once a week.

People do not understand what the monthly SSD defrag/trim is all about - it is not a full defrag of ssd, but a partial defrag to keep the NTFS file system in tip top condition. It is not about moving files like on an HDD.

Simple terms:

The weekly trim is used to ensure wear and tear is averaged out. This function is needed - only issue is how often? For a light user, once a month may be ok, but why bother change frequency?

The monthly function ensures the NTFS file system does not get excessively fragmented. It is debatable if this is ever even really needed for an average user.


I cannot see any more point in discussing this - it is all pointless.

Windows 11 is doing it correctly - W10 was always a bit wonky.
 

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Windows 11 Home x64 Version 25H2 Build 26200....
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So to clarify..., SSD's are not actually being defragmented but rather the deleted blocks of data are being trimmed ready for re-use, whereas a mechanical HDD has the deleted blocks of data physically removed to allow for re-writing? Perhaps Microsoft need to make this more clear in the Defragmenting Tool?

Some definitive clarification would be useful here as I too am now a little concerned by the latest comments. Indeed what drew me to this post in the first instance was this Q&A extracted from the Samsung website, this suggest disabling defragmentation:

Screenshot 2021-12-29 123209.png
 

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So to clarify..., SSD's are not actually being defragmented
Incorrect. According to the MS reference, SSDs are defragged monthly if Optimization is set to weekly. The OP's posted results indicate that they are actually being defragged weekly despite what the MS reference says.

Denis
 

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So with the advice from Samsung in mind, should I disabled the disk defragmenter for my SSD? If so how will the trim feature work?
 

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AMD Ryzen 5 1600 AM4 Hex Core Processor 3200GHz
Motherboard
ASUS Prime B350 Plus
Memory
Corsair Vengeance LPX 16 GB (2x8 GB) DDR4 2666 MHz C16 XMP 2.0 High Performance Desktop Memory Kit - Red
Graphics Card(s)
NVidia Geforce GTX 1050 Ti
Sound Card
Onboard
Monitor(s) Displays
DELL U2412M
Screen Resolution
1920 x 1200
Hard Drives
Samsung 850 EVO SSD 120Gb
Seagate 2 TB
PSU
EVGA SuperNOVA 750 G2, 80+ GOLD 750W, Fully Modular
Case
Chieftec Scorpio TX 10BWD Mid Tower
Cooling
Arctic F8 PWM Rev.2
Keyboard
Logitech K520
Mouse
Logitech MX Master 3
Internet Speed
72.35 Mbps Down - 18.53 Mbps Up
Browser
Microsoft Edge
Antivirus
Windows Defender
So with the advice from Samsung in mind, should I disabled the disk defragmenter for my SSD?
It's entirely up to you whether you follow Samsung's advice or let Windows do what MS think is best.
I have a five year old SSD that I've always let Windows manage and it has only used a few percent of its life. So it will outlive both the computer & me.

If so how will the trim feature work?
Perhaps Samsung have advice about that in their 'SSD magician' settings.

Denis
 

My Computer My Computer

At a glance

Windows 11 Home x64 Version 25H2 Build 26200....
OS
Windows 11 Home x64 Version 25H2 Build 26200.8037
So to clarify..., SSD's are not actually being defragmented but rather the deleted blocks of data are being trimmed ready for re-use, whereas a mechanical HDD has the deleted blocks of data physically removed to allow for re-writing? Perhaps Microsoft need to make this more clear in the Defragmenting Tool?

Some definitive clarification would be useful here as I too am now a little concerned by the latest comments. Indeed what drew me to this post in the first instance was this Q&A extracted from the Samsung website, this suggest disabling defragmentation:

View attachment 17141
This proves my point that very few understand what an ssd defrag is.
 

My Computer My Computer

At a glance

Windows 11 Pro + Win11 Canary VM.I9 13th gen i9-13900H 2.60 GHZ16 GB solderedIntegrated Intel Iris XE
OS
Windows 11 Pro + Win11 Canary VM.
Computer type
Laptop
Manufacturer/Model
ASUS Zenbook 14
CPU
I9 13th gen i9-13900H 2.60 GHZ
Motherboard
Yep, Laptop has one.
Memory
16 GB soldered
Graphics Card(s)
Integrated Intel Iris XE
Sound Card
Realtek built in
Monitor(s) Displays
laptop OLED screen
Screen Resolution
2880x1800 touchscreen
Hard Drives
1 TB NVME SSD (only weakness is only one slot)
PSU
Internal + 65W thunderbolt USB4 charger
Case
Yep, got one
Cooling
Stella Artois (UK pint cans - 568 ml) - extra cost.
Keyboard
Built in UK keybd
Mouse
Bluetooth , wireless dongled, wired
Internet Speed
900 mbs (ethernet), wifi 6 typical 350-450 mb/s both up and down
Browser
Edge
Antivirus
Defender
Other Info
TPM 2.0, 2xUSB4 thunderbolt, 1xUsb3 (usb a), 1xUsb-c, hdmi out, 3.5 mm audio out/in combo, ASUS backlit trackpad (inc. switchable number pad)

Macrium Reflect Home V8
Office 365 Family (6 users each 1TB onedrive space)
Hyper-V (a vm runs almost as fast as my older laptop)
Does anybody have any results to post for the OP in response to my post #28 above?

Denis
 

My Computer My Computer

At a glance

Windows 11 Home x64 Version 25H2 Build 26200....
OS
Windows 11 Home x64 Version 25H2 Build 26200.8037

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