From ccf295971638fb4f81c7f71aaca5731139a4b7ca Mon Sep 17 00:00:00 2001
From: Brian Buchanan <brian@buchananworldcorp.com>
Date: Wed, 3 Feb 2021 10:04:12 -0500
Subject: [PATCH] Test-RDMA update parameters to diskspd

Updated parameters to invocation of diskspd to more thoroughly test RDMA network performance.
New parameters -b1M -c2M -d30 -ft -L -o32 -r -Sr -t8 -w0
-b1M Block size in MiB
-c2M File size in MiB
-d30 Duration in seconds, not including cool-down or warm-up time
-ft Open file with FILE_ATTRIBUTE_TEMPORARY access hints
-L Measure latency statistics
-o32 Number of outstanding I/O requests per-target per-thread
-r Random I/O
-Sr Disable local caching for remote file systems. This leaves the remote system's cache enabled.
-t8	Number of threads per target
-w0 Percentage of write requests to issue

References:
https://unhandled.wordpress.com/2016/07/20/madness-testing-smb-direct-network-throughput-with-diskspd/
---
 Diagnostics/Test-Rdma.ps1 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Diagnostics/Test-Rdma.ps1 b/Diagnostics/Test-Rdma.ps1
index b8a3fead..fc3d7fe5 100644
--- a/Diagnostics/Test-Rdma.ps1
+++ b/Diagnostics/Test-Rdma.ps1
@@ -280,7 +280,7 @@ if ($OutputLevel -eq 2)
 $ScriptBlock = {
     param($RemoteIpAddress, $PathToDiskspd, $TargetFileName) 
     cd $PathToDiskspd
-    .\diskspd.exe -b4K -c10G -t4 -o16 -d100000 -L -Sr -d30 $TargetFileName
+    .\diskspd.exe -b1M -c2M -d30 -ft -L -o32 -r -Sr -t8 -w0 $TargetFileName
 }
       
 $thisJob = Start-Job $ScriptBlock -ArgumentList $RemoteIpAddress,$PathToDiskspd,$TargetFileName
@@ -341,4 +341,4 @@ else
     Write-Host "ERROR: RDMA traffic test FAILED: Please check " -ForegroundColor Yellow
     Write-Host "ERROR: a) physical switch port configuration for Priorty Flow Control." -ForegroundColor Yellow
     Write-Host "ERROR: b) job owner has write permission at " $RemoteIpAddress "\C$" -ForegroundColor Yellow
-}
\ No newline at end of file
+}