NoFate

SMB / Copy speed on esxi SLOW

Recommended Posts

Hi,

 

when running dsm 5.2 on esxi systems, the copy speed is terrible slow

 

for example

 

if i copy over like 100 gb over gb network, it starts good at like 110MB / sec, but after a few min , it drops to 5 MB and eventually windows stops copying

 

changing from e1000 to vmxnet doesnt make any difference

 

running on baremetal, then there is no issue

 

what are the tweaks for this copy speed? :smile: to make it normal ?

 

i had an asrock mainboard, now i switched to hp gen 8 microserver (xeon model)

 

thnx

Share this post


Link to post
Share on other sites

Hi NoFate,

 

I had pretty same behavior with my setup : esxi + RDM + DSM 5.2

The issue was the same with uploads (from DSM to anywhere else), starting correctly (100MB) then dropping to a few MB after a couple of min with some complete freeze sometimes. But Dowmloads were ok.

I checked a lot of things (cable, switch, ethernet config at both sides, etc ...) no success.

 

In a last resort, I changed the raid controller type into the DSM vm, set it to 'VMware Paravirtual' instead of 'LSI logic ...' and it did the trick !

Now both upload and download are stable and with a pretty good bandwidth (80-100MB).

 

I hope it will help.

Share this post


Link to post
Share on other sites

cant reproduce this, running on ESXi and dont have this behaviour.

 

i had 1 issue in the past which looked like this and entered my ESXi monitoring. Here i saw that my DISK latency was running on 100-12000 MS !!!!

Problem solved by providing the right power to my motherboard, somehow a connector was misse and my motherboard didnt get the power it needed to handle the storage controller as a result my disk latency was very high.

 

Place power cord == issue solved, latency < 20ms

Share this post


Link to post
Share on other sites
Hi NoFate,

 

I had pretty same behavior with my setup : esxi + RDM + DSM 5.2

The issue was the same with uploads (from DSM to anywhere else), starting correctly (100MB) then dropping to a few MB after a couple of min with some complete freeze sometimes. But Dowmloads were ok.

I checked a lot of things (cable, switch, ethernet config at both sides, etc ...) no success.

 

In a last resort, I changed the raid controller type into the DSM vm, set it to 'VMware Paravirtual' instead of 'LSI logic ...' and it did the trick !

Now both upload and download are stable and with a pretty good bandwidth (80-100MB).

 

I hope it will help.

 

ok, going to try that out

 

but i was pretty sure i choose paravirtual at the first setup wizard, now i see its LSI logic

 

also tried dsm 6 now, the issue is gone on dsm 6

 

but i want it to work also on 5.2 , going to try out this weekend, thnx for the tip

Share this post


Link to post
Share on other sites

tried the paravirtual setting, same behaviour :sad:

after 2 mins of copying from DSM to local drive, speed drops from +- 110 MB to like 500KB and crashes copying

 

but seems its only on the first boot of dsm, after testing again after like 10 min, the copy speed is normal again and stable

 

too bad , i had the same behaviour on another mainboard, asrock n3150 , now i have it also on hp microserver gen8

 

but anyway, didnt have the issue on DSM 6 , so waiting for the new loader , hopefully this weekend, then going to migrate to 6 :smile:

Share this post


Link to post
Share on other sites

ps :

 

this issue only happens when copy a large folder, like 50 GB or something

it not happens when copying like 2-5 GB

Share this post


Link to post
Share on other sites
??

 

Sorry, which ESX version?

 

Try also a copyjob to another VM on same host. With vmxnet3 the vSwitch should have 10GE, so storage controller is the limit.

 

If you run 5.5 or 6.0 (not 6.5), you have to downgrade the hpvsa to .88 version. All later versions have this performance bug. Maybe this is your bottleneck. Change the driver is a good decision anyway.

https://communities.vmware.com/thread/505233?start=0&tstart=0

Share this post


Link to post
Share on other sites

hi,

before i had an asrock with maibnoard n3150 , esxi 6.0 , dsm 5.2

 

now i have a hp microserver gen8 xeon processor, esxi 6.6 dsm 5.2

 

both mianboards gave the same copy result when copy large files/directorys over smb , but NO problems when running 6.02 junes loader

 

when copying on the same host, there is no issue

Share this post


Link to post
Share on other sites

On Synology, on advanced smb protocol are enable with encryption. This slow down file transfert of files.

 

Also dépend of cpu usage/power  while doing à transfert. Disabling Can help 

Share this post


Link to post
Share on other sites

yes, tried those settings also

 

because on baremetal everything works fine, only on esx it doesnt work

Share this post


Link to post
Share on other sites

copied again 30GB. speed never went below 75Mbyte/sec. did you try ftp/sftp while transferring 30GB or more?

 

2017-07-12 16_59_22-81% abgeschlossen.jpg

Share this post


Link to post
Share on other sites

Hi, no only tried SMB

..can you maybe make an export of your settings? I don't use passthrough btw

Share this post


Link to post
Share on other sites
8 minutes ago, NoFate said:

Hi, no only tried SMB

..can you maybe make an export of your settings? I don't use passthrough btw

 

which settings mate?

Share this post


Link to post
Share on other sites

Hi, the settings of your your vmware host,like paravirtual or sas, your vmxnet, controller... I think you can make an export template

Share this post


Link to post
Share on other sites

Yes, me too...can you create a vmxnet file or ovf , that way I can make the same config ;)

Share this post


Link to post
Share on other sites

so any news nofate as I di provide the vmx file?

just wondering why this topic here is not active but in other threads some people are still reporting this issue.

so i do not have it

Share this post


Link to post
Share on other sites

hi, at the moment still running baremetal, dont have time testing this out :( just became father :smile: 

  • Like 1

Share this post


Link to post
Share on other sites

i didnt test ftp before

 

maybe it has todo with the installtion itself

normally on first boot, in the boot menu, you can choose install for Vmware or something like that

but becuase boot menu is verry fast, always the first option was selected

 

maybe that can cause an issue?

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now