Obviously, users started to complain about slow performance. Best Practice for NDMP Backup Backup Planning and Performance Tuning Guide is available at: is to utilize file sharing protocols such as CIFS or NFS and. 1 we started seeing the slow CIFS performance. 0, please follow the instructions below. I have not changed it in quite some time. I recently updated to a newer OSMC Version an a Vero4K and I noticed a dramatically degraded performance with CIFS mounts. It's really a terrible protocol for file transfer. I'd like to present information about the environment and what I've read and tested. Performance issues can also be caused by overutilized disks behind the CIFS share. This client is used extensively in production on large Intranets. That WD Red is listed without RPM — "Intellipower", with some postings showing a ~5400 RPM drive, which is pretty slow — and with no access time in the spec sheets. BUT, as soon as we implemented Cloud Station, SMB performance (from the users to the 'homedir' share) DROPPED from 100 MB/s to 40-50 MB/s on the central NAS (remote NAS are OK). 66ms for RAID1 and RAID6, respectively. We tested a Windows 7 client on the same 24bit subnet as a number of Windows 2003 file servers on a 1gbps network. The issue does NOT affect a second PC in my network. Q326549 - Read-only & System attributes for folders. The socket option TCP_NODELAY is the one that seems to make the biggest single difference for most networks. This is what I got when I tested mount. of I/O that is slow, and he does a lot of it as chunks are small and many of them are loaded and unloaded from disk. 15ms to 5,341. Well, to be honest, I’ve had same issue with Osx 10. Your system stops responding, you experience slow file server performance, or delays occur when you work with files that are located on a file server. Symantec helps consumers and organizations secure and manage their information-driven world. Configuring PerfMon to Monitor Performance Counters. There are a number of things that can slow down an array - in this case, at one specific time during the day. Transfers to and from a Windows client and our Samba server had good speed, but downloads from the server to two Ubuntu machines (running bionic) were slow. This can be done using Performance Monitor on the server by looking at CPU, disk, and network counters on Windows. Figure 1: Filesystem choice significantly influences performance Summary. You can configure and manage Windows file sharing through the web administration interface. 3 and beyond), server side issues will be discussed. But now you say you didn't map it. network bottlenecks are not that common, typically network slowness is usually due to errors from a bad cable, port, etc. The file server is a Server 2016. CIFS is a dialect of SMB, an even earlier file-sharing protocol used by NetBIOS. Auto-mounts are mounted only as they are accessed, and are unmounted after a period of inactivity. 15ms to 5,341. CIFS signing causes a huge performance issue for us. I have a few zpools but lately (with an uptime of 32 days) we've started to get CIFS issues and really bad IO performance. i have the same performance with my Synology 413j - I'm using afp as with smp it is slower to list files in folders and also to load the images from my media in itunes. 10; How to modify sysctl settings using sysctl. NOOP Scheduler. Links Download JCIFS NTLM HTTP. Testing file open performance across a WAN vs LAN. The requests usually come worded as being an issue with the firewall. (the hdd tests were all fine) So an hour ago I just redid the whole thing: - deleted the usb stick - installed nas4free again on the stick - set up user/groups - formated the hdds for zfs - set up a virtual device zfs1 with all 6 drives (1 parity raidz). I hope that u understand. I have benchmarked SMB performance using an android app and it tops out at 17mbit. Like you, I have been in the situation where I was dependent upon Storage-as-a-Service and forced to live with slow performance, and with no control or say in how that NFS storage was structured or delivered. How to Fix Slow SMB File Transfers on OS X 10. Introduction. Since ColdFusion is both a server and a language (CFML) there are multiple approaches to performance improvement. 13 High Sierra. Slow CIFS / Samba performance / timeouts accessing folders with many files. Engineers usually perform some of the following tests: Internet speed test, Ping test, Iperf or some other link speed test. You can then mount it manually like this:. Learn how you can improve file server performance in Azure without adding any additional hardware or virtual machines by using Windows BranchCache. 300 virtual edition. 2 which did work fine. File transfers using Windows file shares (i. slow writes, even slower reads spanning WAN to Netapp. In the case of CIFS, speed did not improve much until the send buffer size was increased from 16 to 64 KB; this tripled performance at the longer latencies over the default setting (16 KB buffer and 1,500 MTU). enable option must be on to use this feature) vscan on (Turns virus scanning on). 0 GB, 1000 MiB) copied, 3. Like you, I have been in the situation where I was dependent upon Storage-as-a-Service and forced to live with slow performance, and with no control or say in how that NFS storage was structured or delivered. 66ms for RAID1 and RAID6, respectively. However, due to it's very nature, CIFS performance (measures as latency and also throughput) can not be expected to be on-par with NFS or iSCSI, especially in high-speed, medium to high latency environments. But it let you connect. See: Raspberry Pi FAQ 3 Maximizing performance. CIFS signing causes a huge performance issue for us. Changing the TCP windowsize to 65k on the NetApp solved the problem. find extremely slow on CIFS share. I hope that u understand. Modern UNIX operating systems are tuned for high network performance by default. Hi, So we've some strange behaviour with SMB/CIFS through an IPSEC VPN tunnel. CIFS performance is slow, is the SMB 3. Hmm oke not good. CIFS by nature is chatty and has lots of overhead. There could be several causes of slow performance. In that case NFS shows a better performance. The topic title is a little vague, couldn't come up with a better one. Using the third windows 10 pc, or any of our old pc's running win xp and 7, saving works fine. Caching can be useful if you are accessing a file repeatedly, otherwise, it can be an overhead. 0 protocol with multichannel supported? Document ID Document ID FA1008. 3 (CIFS poor 10GBe performance) Looking for tweaks / hints / whatever Discussion in ' FreeBSD and FreeNAS ' started by Kristian , Oct 5, 2015. It is a big subject, and it can be very general to find what is the root cause. Slow access to network shares also occured over the same subnet. 5 not joined to our Windows Domain, connecting to the DFS namespace using cifs://namespace/folder and after that entering the Windows domain credentials. Unfortunely, it's super slow. We tested a Windows 7 client on the same 24bit subnet as a number of Windows 2003 file servers on a 1gbps network. Figure 1: Filesystem choice significantly influences performance Summary. I see cifs. 01: Hands-on TCP Analysis: Packets, Sequences & Fun by Jasper Bongertz. The basic reason that you might not achieve optimal performance is that your Mac and your NAS do not speak the same language when it comes to storing files. Description of problem: We see very slow performance writing from Fedora 7 and 8 clients to our NetApp FAS3020 filer. Frankly, I was pretty unsatisfied with the performance I was getting. The 2 onboard NICs are set up in a aggregate for management access and a few CIFS shares on the management network. Like you, I have been in the situation where I was dependent upon Storage-as-a-Service and forced to live with slow performance, and with no control or say in how that NFS storage was structured or delivered. (unless you are using some artificial means to slow it down). Smb performance didn't improve at all, plus now I have. I have benchmarked SMB performance using an android app and it tops out at 17mbit. Steps Check the CIFS multiplex setting: vserver cifs options show -vserver -vserver_name -instance. of I/O that is slow, and he does a lot of it as chunks are small and many of them are loaded and unloaded from disk. ? cifs stat. The performance data contained in this presentation was measured in a controlled environment. I'm struggling with a weird issue when mounting using CIFS: "Downloading" from the mounted (cifs) server works fine at around 1000mbps "Uploading" to the mounted (cifs) server works slow at around 100mpbs; traffic in both directions works fine when going to smb://server/share ; Accessing the share using windows 10 works just fine as well. Hi, I’m Rick Braddy, Founder, CEO and CTO of SoftNAS®. If it is an application performance issue, get all the details about: The version of the application What specifics of the application are slow, if any How the application works Is this equally slow while using another Windows server over the network?. The only problem is that it randomly starts going really slow taking 30 seconds or longer to open a directory that has 2 or 3 files in it. Synology strives to enhance the performance of our NAS with every software update, even long after a product is launched. File transfers using Windows file shares (i. Since backups must complete within a fixed backup window time, a system with a given performance can only backup so much data within the backup window. After investigation of the problem it filtered down to user data, but then for random users. The domain has several Windows Server 2003 boxes for file. The terms CIFS (Common Internet File System) and SMB (Server Message Block) are used interchangeably as meaning the same thing in most of the NetApp documentation, but they’re not exactly the same thing. When opening the same file from the same server across the WAN, the traffic is on port 139 (NETBIOS). (unless you are using some artificial means to slow it down). When opening on the LAN, the traffic is on port 445 (CIFS). Issue with saving Revit central files to CIFs shares on Novell Netware servers I have discovered what I consider to be a bug with Revit. My thought is the whiskey is what did the trick. You can configure and manage Windows file sharing through the web administration interface. This is usually not a problem across a LAN. Dear Jacky, you may be right that you get the best performance with SMB in a pure Windows only environment. My Windows 7 testing system (using SMB 2. debug information for the cifs vfs is via the Linux /proc filesystem. Slow access to network shares also occured over the same subnet. 02, since SMB 3. You can then mount it manually like this:. Add me to the list of people who had GLACIALLY slow SMB/CIFS/network file transfer performance between Server 2012 and XP or 7 clients - no idea if it would be any better with a Windows 8 client, but it was TERRIBLE (read: less than 500 KB/sec on gigabit network with solid state storage) file server performance and XP clients. Later we will see different tools for stressing and measuring this. There are a few things you can try: Use the SMB2 protocol by mounting your share cifs://. I have not changed it in quite some time. I really think that it's the nesting of the CIFS protocol that "fixes" this issue. Look at all current submissions - totally normal systems that people buy all the time. Other protocols like FTP and HTTP run much smoother. These features vary from processor to processor. It is a big subject, and it can be very general to find what is the root cause. If disk & cpu utilization is more then problem is with filer side only. CIFS (or SMB) earlier than 2008 is slow per definition as it can not cope with latency very well. When I copy files to my NAS over wired GigE, I get up to 18 MB/s in Ubuntu 9. F5’s CIFS acceleration provides intelligent read-ahead and write-behind plus other techniques to help mitigate the effect of WAN latency. Your system stops responding, you experience slow file server performance, or delays occur when you work with files that are located on a file server. I notice the CPU usage is at 50% or more when transferring files over CIFS as well. I have tried quite a few things to. I just purchased two new laptops running Windows 7 Pro 64 bit edition. Steps Check the CIFS multiplex setting: vserver cifs options show -vserver -vserver_name -instance. Rule out client problems and make sure it is tested on multiple clients. Windows Server 2012 Thread, Windows Server 2012 extremely slow performance executing files in Technical; Hello all, I am running windows server 2012 as dc with 2 clients connected both running win7 pro. Rotating rust storage is slow, and subject to the configuration. macOS historically has had "special needs" when it comes to storing and managing files. What I have is a physical server with 3x300GB 10,000 RPM SAS drives in a RAID-5 vs. Additionally, let's face it, SMB/CIFS is very slow dealing with small files. I have not changed it in quite some time. Answer ID Answer ID 1001935. Post by muToad » Sun Nov 08, 2015 10:34 pm CentOS General Purpose ↳ CentOS - FAQ & Readme First. Raspberry Pi 2/3 probably doesn't need some of these tweaks to run Kodi really well, but it also won't hurt anything, if you really want to push things to their. ) ? so I can remove the above patch if require due to performance issues. Hmm oke not good. Since the upgrade, saving from our design software to a Readynas104 on two of these computers has become incredibly slow. cifs prefdc delete domain (Delete a preferred Windows Domain Controllers) cifs gpresult (Displays which Windows Group Policies apply to this filer) cifs gpupdate (Forces an update of Windows Group Policy) cifs top (Performance data for cifs. The ability to create ReFS volumes was removed in Windows 10's 2017 Fall Creators Update for all editions except Enterprise and Pro for Workstations, which would seem to indicate Microsoft is no longer intending ReFS as a general replacement for NTFS, at least in the near future. Also migrated the vm guest over to an ESX 4. I have not changed it in quite some time. Rotating rust storage is slow, and subject to the configuration. NFS has been around forever and is a very efficient and lean protocol. My Windows clients are 50% slower with the vpn enabled, whereas the OS X clients are only 10%-20% slower with the vpn enabled. Frankly, I was pretty unsatisfied with the performance I was getting. Hi, I’m Rick Braddy, Founder, CEO and CTO of SoftNAS®. SMB Has a Variety of Versions and Dialects. I am tempted to install VPN tunnel. iSCSI vs CIFS ITS has begun to explore several methods that bring data center speeds closer to the edge. Adrien Kunysz, Wed, 23 Feb 2011 21:58:00 GMT. I setup one of the two machines and joined it to the domain. We are looking to utilize AppV 5's shared content store and one of the things I was interested in was knowing what kind of overhead network performance may vs. Founded in 2000, TeckLyfe. My Windows 7 testing system (using SMB 2. Were there any recent changes to SMB configuration or the kernel in the past few months that coul…. Performance is orders of magnitude better, and feels comparable to working on an all-localhost setup. 1 The CIFS VFS support for Linux supports many advanced network filesystem 2 features such as hierarchical dfs like namespace, hardlinks, locking and more. Need help on understanding of using CIFS Network share for configuring the Multi instance Queue manager and IIB nodes in Linux server using CIFS protocol. CommCell Performance Tuning - Tuning the Performance of 10Gbps Ethernet Environment You can improve the performance of data movement operations using the suggested parameters. We also take a look at how to use an application performance management system to simplify all of this and get more advanced IIS performance monitoring for ASP. Look at all current submissions – totally normal systems that people buy all the time. Other common causes of this include negotiation issues with the AD. In my previous post "EMC Isilon Overview" I talked about general Isilon configuration. node run -node -command sysstat -c 10 -x 3 (Running the sysstat performance tool with cluster mode) system node image show (Show the running Data Ontap versions and which is the default boot) dashboard performance show (Shows a summary of cluster performance including interconnect traffic). I just purchased two new laptops running Windows 7 Pro 64 bit edition. I am not really an expert here, I was just trying to define the issue clearly. With NFS not cached or the like, you may get somewhat poorer performance than with iSCSI or HBA. [SOLVED] Samba share slow reads. Answer ID Answer ID 1001935. In this post we will cover an updated version for addressing VMXNET3 performance issues on Windows Server 2016. This guide describes tuning parameters and settings that you can tweak to improve the performance and energy efficiency of your Windows Server 2008 R2 servers. Red Hat / Fedora :: Intermittent Slow Access To Cifs Mounted Shares Jan 14, 2010 The shares get mounted correctly and you can navigate through the directories and open files. For these reasons, SMB and FTP file transfers through the firewall can be slow. Azure file shares only support CIFS (SMB version 2. In theory, it can achieve 1000 IOPS and 60MB/sec. You will still see CIFS in the ONTAP command-line interface (CLI) and in OnCommand management tools. signing off but it is on for SMB2 in your post. It walks the hierarchy and deletes each file independently. Unfortunely, it's super slow. This can be done using Performance Monitor on the server by looking at CPU, disk, and network counters on Windows. Related to CIFS or NFS. The two PC are running both Windows XP SP3. From my [somewhat limited] experience NFS is much easier to set up and just tends to work. Mounting CIFS share @ boot. Using Samba to share files between Linux and Windows For all the devices in this familiar family setup, or even a scenario with thousands of users , the Samba suite is an ideal solution for file and print sharing. This is an overview of resources for CIFS Performance Tuning. Tests on identical hardware running CentOS 5 achieve ~50MB/s. SUSE Linux Enterprise Server 11 Service Pack 3 (SLES 11 SP3) The mount command has multiple options to use in order to be able to provide the AD server with what it needs for authentication. Five Challenges of Troubleshooting Smb Performance 1. Just a note on a common fix for slow SMB performance when using FreeNAS, these options are disabled on default FreeNAS installs but they can make a big difference if you are experiencing slow smb access or very high cpu usage in FreeNAS Under the services - SMB page you just need to enable the …. cifs prefdc delete domain (Delete a preferred Windows Domain Controllers) cifs gpresult (Displays which Windows Group Policies apply to this filer) cifs gpupdate (Forces an update of Windows Group Policy) cifs top (Performance data for cifs. I have recently started working with our NetApp and XenServer environment and i have noticed that the storage performance seems slow, from a user perspective. 6 We are experiencing slow read speed over cifs compared to a much higher write. Check the remaining free space on the volume. However, across a WAN, latency and bandwidth reduction can slow down CIFS performance. I thought it was my mach. In the directory /proc/fs/cifs are various configuration files and pseudo files which can display debug information. It is a big subject, and it can be very general to find what is the root cause. Mixed environments like having Windows clients and Linux file servers or vice versa is not uncommon. To squeeze performance out of GlusterFS, use an understanding of the below parameters and how them may be used in your setup. Also migrated the vm guest over to an ESX 4. 3, not sure if is needed in FreeNAS 11. options = intr,locallocks,nfc to /etc/nfs. One windows 7, with same hardware, I was getting about 50-60MB/s Any ideas? It pretty much is making windows 10 unusable for me. CIFS (or SMB) earlier than 2008 is slow per definition as it can not cope with latency very well. I’ve seen in the past where slow disk performance on the DFS server, caused by a thin provisioned vmdk not growing fast enough as new profiles were created, led to hanging at logon. However, due to it's very nature, CIFS performance (measures as latency and also throughput) can not be expected to be on-par with NFS or iSCSI, especially in high-speed, medium to high latency environments. I have a few zpools but lately (with an uptime of 32 days) we've started to get CIFS issues and really bad IO performance. Since NDMP is tied to the SAN vendor, I have to use a file-level backup to meet my data retention policies. The performance data contained in this presentation was measured in a controlled environment. Since the upgrade, saving from our design software to a Readynas104 on two of these computers has become incredibly slow. It takes 30 seconds and more to open a folder with about 10 files in it. I notice the CPU usage is at 50% or more when transferring files over CIFS as well. I'm wondering if there's something going on in the SMB config that can be adjusted to increase speeds? in general from what I'm reading SMB is capable of much faster speeds, and the ix2-200 is generally. For these reasons, SMB and FTP file transfers through the firewall can be slow. Other common causes of this include negotiation issues with the AD. Therefore, some functions described in this guide may not be supported by all. note that in this context, people kept thinking of CIFS as 'newer SMB' for a long time, so even for the most recent versions the mounter is still called mount. 4 (x64) server running Samba 3. 66ms for RAID1 and RAID6, respectively. If slow CIFS network performance causes a performance issue, you can modify the multiplex settings to improve and correct it. DD Boost was designed to. It walks the hierarchy and deletes each file independently. Changing the TCP windowsize to 65k on the NetApp solved the problem. when i take backup from netapp cifs filer to DSU, it took too much time , around 12-13 hours for full backup. If DDBoost is not licensed on the Data Domain system it must be added as a CIFS type or Linux type repository. When signing is on in our environment we get 70-80MBs over 10GBe. 1000+0 records in 1000+0 records out 1048576000 bytes (1. This read performance used to be fine with this exact config file. Re: CIFS share running slow This is a really old thread, you might want to start a new question thread. BUT, as soon as we implemented Cloud Station, SMB performance (from the users to the 'homedir' share) DROPPED from 100 MB/s to 40-50 MB/s on the central NAS (remote NAS are OK). Page 1 of 2 1 2 Next >. Performance decreases when you connect to a third-party server. network bottlenecks are not that common, typically network slowness is usually due to errors from a bad cable, port, etc. Performance. But, if I open a terminal window and check my network performance using iperf to the same NAS box, I get well over 900 mbits/sec--pretty close to full gigabit speeds. It's independent from Active Directory (AD) being enabled or disabled. Hello all, I have a CentOS 6. Improving Samba write performance on Linux Abstract. Mixed environments like having Windows clients and Linux file servers or vice versa is not uncommon. While we work hard to set good Elasticsearch defaults for "typical" applications, you can quickly improve performance with these few best practices. Pulling CIFS data is inherently slower than an NDMP backup. Samba performance is good in most circumstances, but modern Linux distributions have improved file systems since Samba was first developed. 2 Storage Field Days and a year later, they were back for Storage Field Day 18 with a new CTO, Andy Watson, and several performance benchmark records. In theory, it can achieve 1000 IOPS and 60MB/sec. 0 is part of Windows 8 and Windows Server 2012 and offers improved performance, and most importantly, new features around transparent failover and active-active sharing from file server clusters for specific types of server workload such as SQL Server databases and Hyper-V virtual machines. This can be done using Performance Monitor on the server by looking at CPU, disk, and network counters on Windows. 3-R machine on a gigabit LAN:. Hi all, I've just installed the Astaro 8. In all cases, write speed is limited to ~5MB/s on a relatively unloaded filer. Then it doubled down on that dumbness by telling you that you can't login twice. Apple Osx Finder is Listing Files Very (VERY) Slow Over SMB with Shared Hard Drive Connected Directly to a Wifi Router (SOLVED 6/30/2016) Post By: Evan Date: March 29, 2016. cifs, fcp, iscsi. CPU Performance. If the speed is ridiculously slow, for example, 20 kbps, replace the damaged Ethernet cable. the issue is either on the NAS side of things with SMB, or android. Issue with saving Revit central files to CIFs shares on Novell Netware servers I have discovered what I consider to be a bug with Revit. If the mounting of the CIFS filesystem works, and the access through that mountpoint is fast, that seems to eliminate any fundamental issue like network problems, or DNS problems, or authentication problems. Some site notes: We had about 30 Branch-Sites with less then 10Mb/s which didn't faced the slowness. Optimizing NFS Performance. The Java CIFS Client Library. cifs stat. Windows networking performance (SMB/CIFS) Ask Question Asked 10 years, 3 Small writes to SMB network share are slow on Windows, fast over CIFS Linux mount. Improving OS X SMB server share performance to Windows Server 2008R2 Posted: by tnielsen I'm sure you've all know the pain, the pain of browsing a Windows Server share in OS X 10. So i think it's by design or a runtime issue. Most of what we have today are 80C and higher, but our new small office model is the 100E. Another solution would be to change the AD server to. The terms CIFS (Common Internet File System) and SMB (Server Message Block) are used interchangeably as meaning the same thing in most of the NetApp documentation, but they’re not exactly the same thing. Accordingly, this data does not constitute a performance guarantee or warranty. a largely Windows environment. The defaults in GlusterFS are configured at install time to provide best performance over mixed workloads. This read performance used to be fine with this exact config file. Apr 24, 2014 #1 but with a CIFS share. 2018 was a blowout year for WekaIO. We are looking to utilize AppV 5's shared content store and one of the things I was interested in was knowing what kind of overhead network performance may vs. Changing the TCP windowsize to 65k on the NetApp solved the problem. There's nothing new here including that SMBX has often been criticized for its slow file transfer performance in earlier versions. We are using FreeBSD bsd 9. Published Date. Sharkfest '17 Europe - First Thoughts by Paul Offord Sharkfest 2017 EU Recap by Jasper Bongertz. File copies over the network, whether SMB or AFP, are very slowusually less than 15 MB/sec, even over GigE (using the Apple TBolt adapter). Windows machine: 100+ MB/s transfer speed on CIFS, ~20 MB/s transfer over NFS. The best explanation I have seen for this is that the Microsoft TCP/IP stack is slow in sending TCP ACKs. Solution for cause 1. My thought is the whiskey is what did the trick. Windows 10 tip: Stop using the horribly insecure SMBv1 protocol. The two PC are running both Windows XP SP3. Normal Performance Relationships There are some guiding principles behind performance that can be useful in day-to-day operations. How to configure CIFS that local and domain users have fast transfer speeds? I do have massive performance issues using CIFS / SMB / Samba in combination with users. # this option will have no effect if set on a smb signed connection. With all performance tuning, there are no magic values for these which work on all systems. (the hdd tests were all fine) So an hour ago I just redid the whole thing: - deleted the usb stick - installed nas4free again on the stick - set up user/groups - formated the hdds for zfs - set up a virtual device zfs1 with all 6 drives (1 parity raidz). Send it to the list, like before. Here are some specifics:. I was just puzzling over a similar sounding CIFS performance problem. One of the ways of enhancing the performance for that traffic is by using application override to exclude layer 7 inspection and application identification. (unless you are using some artificial means to slow it down). However you may not know that there is an alternative, more efficient and more flexible solution for doing this. 3 (CIFS poor 10GBe performance) Looking for tweaks / hints / whatever Discussion in ' FreeBSD and FreeNAS ' started by Kristian , Oct 5, 2015. Most of what we have today are 80C and higher, but our new small office model is the 100E. The mount command (mount. Has anyone done much with performance tweaking the SSL VPN connection? My scenario is this: 1 remote point of sale station running XP Pro that needs to be able to access internal network shares on Server 2003 and run a Point of Sale client that has a SQL Server 2005 backend that it connects with and makes live transactions (not replicated). I have 4x ReadyNAS units in use. File transfers using Windows file shares (i. cifs tool to. When I copy files to my NAS over wired GigE, I get up to 18 MB/s in Ubuntu 9. ZFS Slow Performance Fix October 21, 2009 Update: The following information could be beneficial to some, however my issues actually were with Caviar black drives shipping with TLER disabled. CIFS performance is slow, is the SMB 3. macOS historically has had "special needs" when it comes to storing and managing files. Published Date. There could be several causes of slow performance. Most devices currently run 5. Post by muToad » Sun Nov 08, 2015 10:34 pm CentOS General Purpose ↳ CentOS - FAQ & Readme First. Introduction to WAN Optimization 1. You can add / modify sysctl settings by editing the sysctl. is having a folder with 100,000 folders inside of it an OK thing to do?. 3 (CIFS poor 10GBe performance) Looking for tweaks / hints / whatever Discussion in ' FreeBSD and FreeNAS ' started by Kristian , Oct 5, 2015. In theory, it can achieve 1000 IOPS and 60MB/sec. Some of my more optimistic Windows friends think that sharing home directories between Linux and Windows would be useful. But, if I open a terminal window and check my network performance using iperf to the same NAS box, I get well over 900 mbits/sec--pretty close to full gigabit speeds. The Linux CacheFS currently is designed to operate on. SSD Acceleration You can choose from three types of Isilon nodes: S-series, X-series and NL-series.