add article Performance Benchmarks for Linux

Author: julie.chen

articles/azure-netapp-files/TOC.yml

@@ -29,6 +29,8 @@
       href: azure-netapp-files-performance-benchmarks.md
     - name: Performance benchmark test recommendations for Azure NetApp Files
       href: azure-netapp-files-performance-metrics-volumes.md 
+    - name: Performance benchmarks for Linux
+      href: performance-benchmarks-linux.md
     - name: FAQs about SMB performance
       href: azure-netapp-files-smb-performance.md
   - name: Cost model for Azure NetApp Files

articles/azure-netapp-files/performance-benchmarks-linux.md

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+---
+title: Azure NetApp Files performance benchmarks for Linux | Microsoft Docs
+description: Describes performance benchmarks Azure NetApp Files delivers for Linux. 
+services: azure-netapp-files
+documentationcenter: ''
+author: b-juche
+manager: ''
+editor: ''
+
+ms.assetid:
+ms.service: azure-netapp-files
+ms.workload: storage
+ms.tgt_pltfrm: na
+ms.devlang: na
+ms.topic: conceptual
+ms.date: 04/29/2020
+ms.author: b-juche
+---
+# Azure NetApp Files performance benchmarks for Linux
+
+This article describes performance benchmarks Azure NetApp Files delivers for Linux.
+
+## Linux scale-out
+
+This section describes performance benchmarks of Linux workload throughput and workload IOPS.
+
+### Linux workload throughput  
+
+The graph below represents a 64-kibibyte (KiB) sequential workload and a 1-TiB working set. It shows that a single Azure NetApp Files volume is capable of handling between ~1,600MiB/s pure sequential writes and ~4,500MiB/s pure sequential reads.  
+
+The graph illustrates decreases in 10% at a time, from pure read to pure write.  It demonstrates what you can anticipate when using varying read/write ratios (100%:0%, 90%:10%, 80%:20%, and so on).
+
+![Linux workload throughput](../media/azure-netapp-files/performance-benchmarks-linux-workload-throughput.png)  
+
+### Linux workload IOPS  
+
+The following graph represents a 4-kibibyte (KiB) random workload and a 1-TiB working set. The graph shows that an Azure NetApp Files volume is capable of handling between ~130,000 pure random writes and ~460,000 pure random reads.  
+
+This graph illustrates decreases in 10% at a time, from pure read to pure write. It demonstrates what you can anticipate when using varying read/write ratios (100%:0%, 90%:10%, 80%:20%, and so on).
+
+![Linux workload IOPS](../media/azure-netapp-files/performance-benchmarks-linux-workload-iops.png)  
+
+## Linux scale-up  
+
+Linux 5.3 kernel enables single-client scale-out networking for NFS `nconnect`. This feature is available on SUSE (starting with SLES12SP4) and Ubuntu (starting with the 19.10 release). It is similar in concept to both SMB multichannel and Oracle Direct NFS.
+
+The graphs in this section show the results of validation testing for the client-side mount option with NFSv3. The graphs compare `nconnect` to a non-connected mounted volume. In the graphs, FIO generated the workload from a single D32s_v3 instance in the us-west2 Azure region.
+
+### Linux read throughput  
+
+The following graphs compare sequential reads of ~3,500MiB/s of reads with `nconnect`, which is roughly 2.3X non-`nconnect`.
+
+![Linux read throughput](../media/azure-netapp-files/performance-benchmarks-linux-read-throughput.png)  
+
+### Linux write throughput  
+
+The following graphs show a comparison of sequential writes. They indicate that nconnect has no noticeable benefit for sequential writes. 1,500MiB/s is roughly both the upper limit for the sequential write and the egress limit for D32s_v3 instance.
+
+![Linux write throughput](../media/azure-netapp-files/performance-benchmarks-linux-write-throughput.png)  
+
+### Linux read IOPS  
+
+The following graphs show random reads of ~200,000 read IOPS with `nconnect`, which is roughly 3X non-`nconnect`.
+
+![Linux read IOPS](../media/azure-netapp-files/performance-benchmarks-linux-read-iops.png)  
+
+### Linux write IOPS  
+
+The following graphs show random writes of ~135,000 write IOPS with `nconnect`, which is roughly 3X non-`nconnect`.
+
+![Linux write IOPS](../media/azure-netapp-files/performance-benchmarks-linux-write-iops.png)  
+
+
+## Next steps
+
+- [Azure NetApp Files: Getting the Most Out of Your Cloud Storage](https://cloud.netapp.com/hubfs/Resources/ANF%20PERFORMANCE%20TESTING%20IN%20TEMPLATE.pdf?hsCtaTracking=f2f560e9-9d13-4814-852d-cfc9bf736c6a%7C764e9d9c-9e6b-4549-97ec-af930247f22f)