bad partition alignment & slow SSD write speeds

[p00se2]

hello

ssd 1 apacer (30% disk space used - its not FULL )
ssd 2 crucial ( no issues + partition aligned to 4096)

ssd1 is system drive and runs fine - has no issues in normal operations, system runs fine and stable for month

during benchmarking i noticed somewhat slow write speeds for the apacer ssd - read is 480 to 520 mb / sec which is fine

write speed reports at 60 - 70mb / sec ( definitely not normal )

i noticed that the partition on the apacer is misaligned and i was wondering if this could cause the write speeds to drop like that ?

can i thinking shrink the existing partition and make a new one - one that should be properly aligned?! (leaving windows on its own slow / misaligned partition)
im assuming this would give me the correct write speeds


thanks in advance !

[Bad 💀 Motha]

Google search: align ssd partition

[p00se2]

Originally posted by Bad 💀 Motha:

Google search: align ssd partition

dude ! you are actually funny did you even read my questions?

[pasa]

4096 what? Why do you think it is misaligned in the first place?

I read some articles on this and they smell fish bigtime. Especially the claim of impact on READ speeds makes no sense whatsoever.

The lack of any actual measurements tells a lot. In any case the impact could manifest only in very special cases and for a small amount, nothing near yours. Your problem is something else.

Moving and resizing partitions is possible and simple, just google for the tools, but I would not bother.

[Bad 💀 Motha]

Originally posted by p00se2:

Originally posted by Bad 💀 Motha:

Google search: align ssd partition

dude ! you are actually funny did you even read my questions?

Yea and there is your answer. Get a proper tool and do the alignment. Nothing in the OS alone can help you do that.

[p00se2]

if its not caused by partition being misaligned
what else would cause the write speeds being this low ?

shrinking partition to make a new one was an idea - im assuming that whichever software or OS makes the partition would also make sure its aligned properly ?

from what i gathered the available tools tools that handle partition management or alignment still require the partition to be formatted or created again - meaning data will be lost

i can go that route but id like to not guess and know doing it will fix the SLOW WRITE speeds



thank you

Originally posted by pasa:

4096 what? Why do you think it is misaligned in the first place?

.

it started with observing extremely slow write speeds 60 mb / sec ( should be 500~)
while read speeds are where they should be 480-520 mb / sec

leading me to some research since im new to ssd´s

the posts i found talked about similar issues mentioning partition alignment

thats when i checked if my partition was miss-aligned and according to the data presented in windows msinfo
its definitely misaligned

leading me to the question : would this be the cause for slow write speeds ?



still unsure and somewhat confused

[Bad 💀 Motha]

Another way is do an entire disk clone backup to an ISO. Wipe the ssd, then restore the iso back to the drive

[p00se2]

Originally posted by Bad 💀 Motha:

Another way is do an entire disk clone backup to an ISO. Wipe the ssd, then restore the iso back to the drive

true
but still no guarantee it will fix the low write speeds ( or that misaligned partition is even the cause )


lets assume the partitions are aligned properly

what would cause write speeds to be 60 when they should be 500
read speeds are unaffected and are what they should be


i dont know enough to just say the drive is faulty - id it was im assuming i run into issues crashes unstable system performance AND the read speeds would also be affected

[rawWwRrr]

Write cache is different between drives? Different controllers? You don't give any other details besides the names of the manufacturers. Which models are they? How are they connected? SATA? NVME? What's the motherboard they are connected to? What available PCIE lanes are there to each? A lot of details are left out to make a concrete assessment.

Alignment used to make a big difference in the spinning rust days but SSDs have enough overall speed that it doesn't matter unless you have a specific reason for doing so. I can't think of the last time I even bothered to align a drive.

[stoneyoda]

why are you formatting in fat32

[p00se2]

Originally posted by rawWwRrr:

Write cache is different between drives? Different controllers? You don't give any other details besides the names of the manufacturers. Which models are they? How are they connected? SATA? NVME? What's the motherboard they are connected to? What available PCIE lanes are there to each? A lot of details are left out to make a concrete assessment.

apacer as350 (fast read slow write
crucial bx500 ( fast read fast write )
both on sata / AHCI controller

mboard asus prime a320m-e

[Bad 💀 Motha]

Format Win10 drive as GPT/NTFS and at least 8K clusters. I wouldn't leave an ssd on a default of 4K clusters, this is what can lower your drive speeds.

Also make sure you download the latest Intel or AMD official chipset drivers and install that driver suite. This has performance enhanced drivers for things such as SATA AHCI and USB

[pasa]

Originally posted by p00se2:

crucial bx500 ( fast read fast write )

Look for the specs, most likely it's one of those cheap things without dram cache that makes the writes as slow as you measure.

[p00se2]

Originally posted by pasa:

Originally posted by p00se2:

crucial bx500 ( fast read fast write )

Look for the specs, most likely it's one of those cheap things without dram cache that makes the writes as slow as you measure.

why did you quote the BX ssd ? its the one that runs FINE and as advertised

besides i dont think that would make it "ok" to advertise a drive with 500 mb / sec write speeds when its actually not - or can only sustain the 500mb write speed for like 1 to 5 seconds
false advertisement leads to lawsuits leads to lots of issues

there are plenty of benched marks for the apacer ssd on userbenchmark website that shows all sorts of other speeds including normal ones up to 500mb / sec

edit

http://consumer.apacer.com/eng/upload/download/20170411174533_banner_.pdf

https://consumer.apacer.com/upload/download/20181018105352_banner_.pdf

edit : checked the pdfs and other specs on the website but i cant really tell why it would give me those speeds when all numbers tell otherwise - as for cache - no idea

[pasa]

Interesting; https://www.techpowerup.com/234870/apacer-intros-as350-panther-entry-level-sata-ssd lists very differents specs. The pds says Version 2.0, possibly it had a version 1 variant with less performance, that happens to match what is observed here.

[Bad 💀 Motha]

Sounds like a junk ssd. Maybe find another use for that drive and buy a modern spec model. Like at least a 250-500gb sata 6.0gbps ssd from WD, Crucial, Samsung, ADATA