Skip to Content.
Sympa Menu

perfsonar-user - RE: [perfsonar-user] Poor 10GE iperf3 performance after toolkit installed?

Subject: perfSONAR User Q&A and Other Discussion

List archive

RE: [perfsonar-user] Poor 10GE iperf3 performance after toolkit installed?


Chronological Thread 
    < Chronological >      < Thread >
  • From: Ivan Garnizov <>
  • To: Scot Colburn <>, "" <>
  • Subject: RE: [perfsonar-user] Poor 10GE iperf3 performance after toolkit installed?
  • Date: Tue, 18 Mar 2025 13:46:22 +0000
  • Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=cc.bas.bg; dmarc=pass action=none header.from=cc.bas.bg; dkim=pass header.d=cc.bas.bg; arc=none
  • Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=J7CXDNyu0yKEPoJGabL2sho9veXJQwG6GIGTNqD4UoU=; b=OQOE53W8L1n/G7Pv2AguPXEzrjrjYM2uNPV2dE3yP3V0/3pu9+cSweysaXfUOzuCx8t/lezqplkW7UMZ9ouRKNtflUbtJXUzISmjSH9pzYC2W+BnzTpy73DuzazddyVsh33BIh39rra8Xl1rAu3J+CUovF3e8UB1QfB6esq7H8oJnZTRtYUMIggcBZfXjfll86Nper/7eoXGYDRDxy6synmDwLqRoR8Bh9HjkBPeJ6bjb+dToIMZSvxgxJWz0zfzs9hyamc+1CXbksl+LqqDTx2LZIUg2l7tUaXJpBun4w40SQz7cwyucBZU3NNeofzzfjPsXKFnTQiZfeHJkmRpbA==
  • Arc-seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=ae40Oi7DFoBYMZqIjwJn5xo2MFsuZzz2TApzhw1Eipg+k//vJMeIubwxc+FePOKsy7jpV6XExsjLeYGn8N4O80XENqUmeINN/UaR36Ta93zcLqFVG2FKvrucsslO1Wgn5c7ulWjrDW6d4Zo/Yq1P68jWk9jhOrbbOU8A1LS0ecU5oLNvyvG5Mj5PZjAiSiOUx4sYvNMrz97I5aILd9+lCtINptS4SygMjIMQV0zN5MMX4Weo5Ql/MGEOAN/h5i7+doWEus5+rKJ0mN6S6ir5Ij36WCTripM9QjBmnuQrkg8Rj7RrI5vSiBPGTyViIu0irz8jniuQtOYgcpbCVXQ6Aw==

Hello Scot,

 

The package in the pS Toolkit, which deals with system optimization is: perfsonar-toolkit-sysctl

 

I hope this is what you are looking for.

 

Regards,

Ivan

 

 

From: <> On Behalf Of Scot Colburn
Sent: Friday, 14 March 2025 01:38
To:
Subject: [perfsonar-user] Poor 10GE iperf3 performance after toolkit installed?

 

Hi Perfsonar gurus!

 

Why does the perfsonar-toolkit installation turn off TSO?

 

Our 10GE Debian perfsonars connected back-to-back get only 3-4 Gbps performance on 1500 byte MTUs after installing the perfsonar-toolkit. We get good 9.5 Gbps iperf3 TCP performance until the perfsonar-toolkit is installed. We can restore 9.5 Gbps performance by enabling TSO on the transmitting 10GE interface, like this:

root@debian:/home/ansible-mgmt# ethtool -K enp1s0f1 tso on
root@debian:/home/ansible-mgmt# ethtool -k enp1s0f1 | grep tcp-segmentation-offload
tcp-segmentation-offload: on

root@debian:/home/ansible-mgmt# ethtool --driver enp1s0f1
driver: i40e
version: 6.1.0-31-amd64
firmware-version: 9.00 0x8000d299 1.3256.0
expansion-rom-version:
bus-info: 0000:01:00.1
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes

Why is TSO turned off, anyway? I recall there used to be problems with TSO. Are there still? Are we covering up some other problem by turning it on?

 

--Scot

 

--

---
Scot Colburn

Network Engineer NSF NCAR/UCAR/NETS/FRGP

303-497-2452


Archive powered by MHonArc 2.6.24.

Top of Page