Low transfer Speeds, what to exspect from Toshiba MG09-ACA


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Hi there, 

i am setting up a new server - it my unraid-1st-time :)

I am comming from an True-Nas 4-Disk-ZFS1-pool.

 

At the moment i am disapointet and try to find the weak link and trying different comibations of parity/FS-setups comparing ingoing and outgoing transfer-speeds.

 

Setup:

Supermicro X10SLH-F

32gig of ram

HP 10gb SFP+ single link direct connection.

Same card on the truenas-server.

 

writing speed starts ~220mb/sec an shortly decreases to ~70mb/sec :(

 

thanks in regard

 

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Things i tried.

Setting the MTU 1500>9000.

Enabled turbo write.

Using the internal 1GBE-BaseT instead of the 10GBE-SFP+ interface.

Using other motherboard (supermicro > asus) CPU(Xeon > i5-5820k) - allways ~16gig RAM.

Using other connections to disks - 1: SATA-ports on motherboard | 2: LSI-Raid SAS/SATA raid-controller (IT-mode))

Using windows-file-explorer (SMB: network routing client1>switch>router>switch>router>client2) using krusader (SMB: direct connection between 2 nas-servers).

 

When writing to the unraid-server its allways dropping from "max thruput" (Network or Disk) to ~70MB/s (picture from 1GBE-connection attached).

 

Nothing is changing the drop to 70 MB/sec, when using parity :(

 

 

 

20230311_A1_P1_WD-UR.png

20230311_A1_P0_WD-UR.png

20230311_A1_P0_TN-UR.png

Edited by hecky
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The picture i think u refer to was between 2 clients with 1GBe

 

Using iperf3 ovia direct connection (2x2 SFT+ via fibre and LAGG/LACP) shows the following:

Seems fine to me.

 

When writing from Unraid to ZFS1-Raid i get a constant ~255 MB/sec.

Writing the other way it starts with ~500 and decreasing constantly to 70 an fluctuating curve. At the end after moving ~70gigs it middles at arround 134MB/sec.

20230311_iperf3_SFPplus.jpg

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Does the log-file-creator care when i am creating log?

I am shure that i created the logs when the transfer-rate was dropping to ~120-130 mb/sec.

 

Changed an i7 6-core > E5 10-core and RAM from 32 > 48. Still not ideal :(

 

Does it make a difference when using different bondig-modes for my transfer-problem?
At the moment I am using "
Mode 4 (802.3ad)" (Unraid) and "Link Aggregation (LACP)" with the Truenas-Server.

Edited by hecky
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In my opinion it has to be something with the disks.

 

Using the onboard nic and an windows pc conectet via a switch and smb-share it also drops from constant 100mb to ~70mb.

 

image.thumb.png.06423f7ee05ee88e8e795c1991af536f.png

 

Sry to bother u JorgeB but sadly i am not able to find icon u marked :/

Is this an aditional plugin u use? 

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