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Blue Screen Again
Posts: 7
Registered: ‎04-13-2017
Location: GB
Message 1 of 9 (1,402 Views)

T470s NVMe 512G SSD performance

Hello everyone,

 

I have a T470s shipped with a Toshiba 512GB NVMe SSD. It shows about 1.2GB/s and 610MB/s on sequential read and write speeds both on Windows 10 and Linux systems. These speeds are much lower than I expected. Are these speeds normal, especially the write speed?

 

The speeds are got from CristalDiskMark 5.2.1 in Win10, and `hdparm` and `dd` on Linux.

 

Does anyone else have the same model tested on read/write speed? Could you please share your test results?

 

TIA

CnZhx

Community Moderator
Posts: 5,518
Registered: ‎01-13-2008
Location: US
Message 2 of 9 (1,374 Views)

Re: T470s NVMe 512G SSD performance

Hello and welcome,

 

I don't have a similar machine, but that does seem slow.

 

Can you pull the exact SSD model number out of device manager?

 

Z.


The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.


The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog

 

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Blue Screen Again
Posts: 7
Registered: ‎04-13-2017
Location: GB
Message 3 of 9 (1,348 Views)

Re: T470s NVMe 512G SSD performance

Thanks, Z,

 

Here is the detailed information,

Model Number: THNSF5512GPUK TOSHIBA 

Firmware Version: 51025KLA

 

 

Regards,

CnZhx

 

 

Community Moderator
Posts: 5,518
Registered: ‎01-13-2008
Location: US
Message 4 of 9 (1,328 Views)

Re: T470s NVMe 512G SSD performance

Hmmm, it looks like your numbers are only a little low:

 

https://toshiba.semicon-storage.com/info/docget.jsp?did=55015

 

1,500 MiB/s, 980 MiB/s

 

FWIW,

Z.


The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.


The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog

 

Communities:    English    Deutsche     Español     Português     Русскоязычное


Blue Screen Again
Posts: 7
Registered: ‎04-13-2017
Location: GB
Message 5 of 9 (1,279 Views)

Re: T470s NVMe 512G SSD performance

Thanks, Z.

 

You're awesome :-) I tried to find such a brochure but no vail.

 

P.S. I find there are T470s' equipped with a Samsung PM961 SSD, which looks much better than this Toshiba one. Any idea that why Lenovo provides the same product with such different components? I think it's unfair to customers who happens to get a inferior one.

 

Again, thanks for your help.

Punch Card
Posts: 31
Registered: ‎12-17-2016
Location: SE
Message 6 of 9 (1,234 Views)

Re: T470s NVMe 512G SSD performance

That's not OK, contact Lenovo and claim Warranty on this NVMe disc - it's not even close to what it should have.

Blue Screen Again
Posts: 7
Registered: ‎04-13-2017
Location: GB
Message 7 of 9 (1,220 Views)

Re: T470s NVMe 512G SSD performance

Hi Calby, thanks for your advice. I'll try to claim a warranty on this. Let's see what will happen.

 

Regards,

CnZhx

Blue Screen Again
Posts: 7
Registered: ‎04-13-2017
Location: GB
Message 8 of 9 (1,060 Views)

Re: T470s NVMe 512G SSD performance

I have contacted the Support after the Easter holiday. They odered a new SSD to be delivered to me. But it will be in my hand several days later because they have no SSD in stock.

 

I will report back after receiving and replacing the SSD.

Blue Screen Again
Posts: 7
Registered: ‎04-13-2017
Location: GB
Message 9 of 9 (838 Views)

Re: T470s NVMe 512G SSD performance

[ Edited ]

On 2nd May, I received the new SSD. Although the email notification says its FRU Part No. is 00UP642 (the Toshiba one), it's 00UP437 (the Samsung PM961 one) actually. After working on the replacement more than a half day, the new system was ready. On the re-imaged system of Windows 10, the new SSD reads sequential read and write speeds of 1665 MB/s and 1514 MB/s respectively.

 

Update test results in Linux:

`hdparm` gives read speed of 1631.30 MB/s; `dd` gives read speed of  2.6 GB/s and write speed of 1.1 GB/s.

Like this,

$ sudo hdparm -tT --direct /dev/nvme0n1
/dev/nvme0n1:
Timing O_DIRECT cached reads:   2574 MB in  2.00 seconds = 1286.93 MB/sec
Timing O_DIRECT disk reads: 4894 MB in  3.00 seconds = 1631.30 MB/sec

and,

$ dd if=/dev/zero of=tempfile bs=1M count=4096 conv=fdatasync,notrunc status=progress
2706374656 bytes (2.7 GB, 2.5 GiB) copied, 1.00021 s, 2.7 GB/s
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB, 4.0 GiB) copied, 3.91906 s, 1.1 GB/s
$ sudo sh -c 'echo 3 > /proc/sys/vm/drop_caches'
$ dd if=tempfile of=/dev/null bs=1M count=4096 status=progress
2614099968 bytes (2.6 GB, 2.4 GiB) copied, 1.00019 s, 2.6 GB/s
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB, 4.0 GiB) copied, 1.6226 s, 2.6 GB/s
$ dd if=tempfile of=/dev/null bs=1M count=4096 status=progress
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB, 4.0 GiB) copied, 0.554867 s, 7.7 GB/s



I am happy with this replacement despite the read speed is much lower than the specification which is 2800MB/s. And I wish I don't have to do a full system migration again because the procedure is too boring and exhausting.

On the alternative part, according to the support representative, they can only file a requrest of a replacement part for customer when it's necessary. The replacement part will most likely have the same FRU part No. as the original one. But if the same type of part is not available in a certain period, an alternative part will be sent to the customer instead. This is the situation happening here.


@Calby Thank you for your advice.


======

Another thing I need to mention is that this new SSD has a lot of error log entries in the S.M.A.R.T. report. This is still a mistery to me. The following message is from the report of `smartctl` in Linux. Hopefully someone could help on explain this and pointing out the implications.

 

update: find a post saying this error log is not important.

 

.........
Error Information Log Entries:      35
Warning  Comp. Temperature Time:    0
Critical Comp. Temperature Time:    0
Temperature Sensor 1:               27 Celsius
Temperature Sensor 2:               30 Celsius

Error Information (NVMe Log 0x01, max 64 entries)
Num   ErrCount  SQId   CmdId  Status  PELoc          LBA  NSID    VS
  0         35     0  0x0016  0x4016  0x004            0     1     -
  1         34     0  0x0016  0x4016  0x004            0     1     -
  2         33     0  0x0026  0x4016  0x004            0     1     -
  3         32     0  0x0026  0x4016  0x004            0     1     -
  4         31     0  0x0016  0x4016  0x004            0     1     -
  5         30     0  0x0016  0x4016  0x004            0     1     -
  6         29     0  0x002e  0x4016  0x004            0     1     -
  7         28     0  0x001a  0x4004  0x02c            0     0     -
  8         27     0  0x0019  0x4004  0x02c            0     0     -
  9         26     0  0x0016  0x4016  0x004            0     1     -
 10         25     0  0x0026  0x4016  0x004            0     1     -
 11         24     0  0x0016  0x4016  0x004            0     1     -
 12         23     0  0x0018  0x4004  0x02c            0     0     -
 13         22     0  0x0017  0x4004  0x02c            0     0     -
 14         21     0  0x0026  0x4016  0x004            0     1     -
 15         20     0  0x0018  0x4004  0x02c            0     0     -
... (19 entries not shown)
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