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  • How to monitor internet usage

    - by calamity123
    How do i monitor my family's internet usage. Most of them are connected through a wireless router wifi. And i cant install spy programs on each computer. how do i find out what they do and see with this wireless network. and view who all access my network and what they access it for. Please respond. freeware would be helpful.

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  • CPU Benchmark - Set Load, usage spikes

    - by iulianchira
    I need a CPU benchmark to test the performance impact of various power management policies. I must be able to set the load (e.g. to get a relatively steady load of 20%-30%-60%) and to simulate usage spikes (set frequency of spikes). I would also like it to be scriptable so as to be able to change benchmark settings in an indirect manner.

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  • Server Load Check

    - by ntechi
    Is it possible to trace which file or process or database query is effecting the load on a VPS? I am using Centos with 512 MB Guarantee Memory and 1 GB burst Memory, I am running 3 wordpress sites from it, where all are having daily traffic of 30-100 visitors each, After every 2-3 days I need to restart my VPS because the resources are taking high usage of memory, I tried running top command and it shows Apache as high, But is it possible to check which website is taking load? Here is my 'top -c' command output results

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  • Upload Bandwidth usage when you become seed of a torrent

    - by Deepa
    Hi All, I have some basic query regarding Torrent download. Please suggest me the right place of asking this query if this is not the one. When I become the seed and leecher tries to download from my computer, the data from my computer must be uploaded so that it is available to others. Doesn't it affect my upload bandwidth usage? I have posted this query just for curiosity. Thanks and Regards, Deepa

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  • Reducing memory for worker MPM in Apache

    - by ShyM
    I've moved from the prefork MPM to the worker MPM due to a process limit I was hitting on my VPS. However, memory usage increased after switching over (which is odd since the worker MPM is supposed to have a smaller memory footprint?). Most of them belong to php-cgi processes. Is there something I'm doing wrong? I have around 20 sites on it, each with a different fcgi wrapper script. Could that be a reason?

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  • php mysql cpanel high cpu usage

    - by Megahostzone Santu
    server taking high cpu usage load average: 108.87, 105.92, 85.82 netstat -ntu | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n Reselt showing too much connect from server IP cpanel Process Manager showing 19.4 | 0.5 | /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --log-error=/var/lib/mysql/zebra546.serverstall.com.err --pid-file=/var/lib/mysql/zebra546.serverstall.com.pid 3.0 | 0.2 | /usr/bin/php /home/nowwatch/public_html/index.php

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  • How can a single threaded application like Excel 2003 take more than 50% of a hyper-threaded or dual

    - by Lunatik
    I'm waiting for Excel to finish a recalculation and I notice that the CPU usage as reported by Task Manager occasionally spikes to 51% or 52% on a Pentium 4 with hyper-threading. How is a single-threaded application like Excel 2003 doing this? Is it just a rounding/estimation error on the part of Task Manager? Or is it something to do with HT allocation i.e. I wouldn't see this happening on a genuine dual-core or dual-CPU machine?

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  • How can I make linux vps to reload if CPU usage is more than 50%

    - by SPnova
    From time to time I have strange problem. My VPS overloads and doesn't request. I have to reboot server by hands, and only after it server works well again. But sometimes several hours pass until I find out that it overload, and all this time my sites are down. Is there any way to make Linux to reload if CPU usage is more than 50%? It would help me a lot.

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  • Why is 'System' process at 100%?

    - by ripper234
    On Windows 7, the 'system' process is taking up 100% CPU (well 50% on a duel core) for a rather long time. Its CPU usage doesn't seem to drop at all. How can I diagnose this problem? What could be the cause? I don't see any other problems with the system and am using an up-to-date AVG, so I don't yet suspect a maelware.

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  • How to kill/restart automatically a specific Windows application if it begins taking 100% CPU?

    - by Esko Luontola
    I have one program running in the background (so I can use a remote controller with my PC) but every now and then the program crashes and begins using 100% CPU (I have quad-core, so it's 25% CPU usage). When that happens, the program needs to be killed and restarted. Is there a program for Windows, which can be used to detect automatically that a specific application hogs all the CPU, and would then automatically kill and restart that application?

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  • How to deploy a visual studio custom tool?

    - by Aen Sidhe
    Hello. I have a my own custom tool for Visual Studio 2008 SP1. It consists of 5 assemblies: 3 assemblies with code that used heavily in my other projects, 1 assembly-wrapper above VS2008 SDK and assembly with the tool. If I'd debug my tool from visual studio, using "Run external program" option with command line "C:\Program Files (x86)\Microsoft Visual Studio 9.0\Common7\IDE\devenv.exe" and arguments "/ranu /rootsuffix Exp" all work perfectly. After that I trying to deploy it to my working VS copy, not to experimental hive doing: gacutil /i Asm1.dll for all my assemblies and doing RegAsm Asm1.dll only for assembly with custom tool. Neither of utils prints any error, all work as planned, even registry keys appeared. But my tool don't work even after PC restart. What did I do wrong? Wrapper looks like that: [ComVisible(true)] public abstract class CustomToolBase : IVsSingleFileGenerator, IObjectWithSite { #region IVsSingleFileGenerator Members int IVsSingleFileGenerator.DefaultExtension(out string pbstrDefaultExtension) { pbstrDefaultExtension = ".cs"; return 0; } int IVsSingleFileGenerator.Generate(string wszInputFilePath, string bstrInputFileContents, string wszDefaultNamespace, IntPtr[] rgbOutputFileContents, out uint pcbOutput, IVsGeneratorProgress pGenerateProgress) { GenerationEventArgs gea = new GenerationEventArgs( bstrInputFileContents, wszInputFilePath, wszDefaultNamespace, new ServiceProvider(Site as Microsoft.VisualStudio.OLE.Interop.IServiceProvider) .GetService(typeof(ProjectItem)) as ProjectItem, new GenerationProgressFacade(pGenerateProgress) ); if (OnGenerateCode != null) { OnGenerateCode(this, gea); } byte[] bytes = gea.GetOutputCodeBytes(); int outputLength = bytes.Length; rgbOutputFileContents[0] = Marshal.AllocCoTaskMem(outputLength); Marshal.Copy(bytes, 0, rgbOutputFileContents[0], outputLength); pcbOutput = (uint)outputLength; return VSConstants.S_OK; } #endregion #region IObjectWithSite Members void IObjectWithSite.GetSite(ref Guid riid, out IntPtr ppvSite) { IntPtr pUnk = Marshal.GetIUnknownForObject(Site); IntPtr intPointer = IntPtr.Zero; Marshal.QueryInterface(pUnk, ref riid, out intPointer); ppvSite = intPointer; } void IObjectWithSite.SetSite(object pUnkSite) { Site = pUnkSite; } #endregion #region Public Members public object Site { get; private set; } public event EventHandler<GenerationEventArgs> OnGenerateCode; [ComRegisterFunction] public static void Register(Type type) { using (var parent = Registry.LocalMachine.OpenSubKey(@"Software\Microsoft\VisualStudio\9.0", true)) foreach (CustomToolRegistrationAttribute ourData in type.GetCustomAttributes(typeof(CustomToolRegistrationAttribute), false)) ourData.Register(x => parent.CreateSubKey(x), (x, name, value) => x.SetValue(name, value)); } [ComUnregisterFunction] public static void Unregister(Type type) { using (var parent = Registry.LocalMachine.OpenSubKey(@"Software\Microsoft\VisualStudio\9.0", true)) foreach (CustomToolRegistrationAttribute ourData in type.GetCustomAttributes(typeof(CustomToolRegistrationAttribute), false)) ourData.Unregister(x => parent.DeleteSubKey(x, false)); } #endregion } My tool code: [ComVisible(true)] [Guid("55A6C192-D29F-4e22-84DA-DBAF314ED5C3")] [CustomToolRegistration(ToolName, typeof(TransportGeneratorTool))] [ProvideObject(typeof(TransportGeneratorTool))] public class TransportGeneratorTool : CustomToolBase { private const string ToolName = "TransportGeneratorTool"; public TransportGeneratorTool() { OnGenerateCode += GenerateCode; } private static void GenerateCode(object s, GenerationEventArgs e) { try { var serializer = new XmlSerializer(typeof (Parser.System)); using (var reader = new StringReader(e.InputText)) using (var writer = new StringWriter(e.OutputCode)) { Generator.System = (Parser.System) serializer.Deserialize(reader); Generator.System.Namespace = e.Namespace; Generator.GenerateSource(writer); } } catch (Exception ex) { e.Progress.GenerateError(ex.ToString()); } } } Resulting registry keys: Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\9.0\Generators] [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\9.0\Generators\{FAE04EC1-301F-11D3-BF4B-00C04F79EFBC}] [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\9.0\Generators\{FAE04EC1-301F-11D3-BF4B-00C04F79EFBC}\TransportGeneratorTool] @="TransportGeneratorTool" "CLSID"="{55a6c192-d29f-4e22-84da-dbaf314ed5c3}" "GeneratesDesignTimeSource"=dword:00000001 "GeneratesSharedDesignTimeSource"=dword:00000001

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  • Unusually high dentry cache usage

    - by Wolfgang Stengel
    Problem A CentOS machine with kernel 2.6.32 and 128 GB physical RAM ran into trouble a few days ago. The responsible system administrator tells me that the PHP-FPM application was not responding to requests in a timely manner anymore due to swapping, and having seen in free that almost no memory was left, he chose to reboot the machine. I know that free memory can be a confusing concept on Linux and a reboot perhaps was the wrong thing to do. However, the mentioned administrator blames the PHP application (which I am responsible for) and refuses to investigate further. What I could find out on my own is this: Before the restart, the free memory (incl. buffers and cache) was only a couple of hundred MB. Before the restart, /proc/meminfo reported a Slab memory usage of around 90 GB (yes, GB). After the restart, the free memory was 119 GB, going down to around 100 GB within an hour, as the PHP-FPM workers (about 600 of them) were coming back to life, each of them showing between 30 and 40 MB in the RES column in top (which has been this way for months and is perfectly reasonable given the nature of the PHP application). There is nothing else in the process list that consumes an unusual or noteworthy amount of RAM. After the restart, Slab memory was around 300 MB If have been monitoring the system ever since, and most notably the Slab memory is increasing in a straight line with a rate of about 5 GB per day. Free memory as reported by free and /proc/meminfo decreases at the same rate. Slab is currently at 46 GB. According to slabtop most of it is used for dentry entries: Free memory: free -m total used free shared buffers cached Mem: 129048 76435 52612 0 144 7675 -/+ buffers/cache: 68615 60432 Swap: 8191 0 8191 Meminfo: cat /proc/meminfo MemTotal: 132145324 kB MemFree: 53620068 kB Buffers: 147760 kB Cached: 8239072 kB SwapCached: 0 kB Active: 20300940 kB Inactive: 6512716 kB Active(anon): 18408460 kB Inactive(anon): 24736 kB Active(file): 1892480 kB Inactive(file): 6487980 kB Unevictable: 8608 kB Mlocked: 8608 kB SwapTotal: 8388600 kB SwapFree: 8388600 kB Dirty: 11416 kB Writeback: 0 kB AnonPages: 18436224 kB Mapped: 94536 kB Shmem: 6364 kB Slab: 46240380 kB SReclaimable: 44561644 kB SUnreclaim: 1678736 kB KernelStack: 9336 kB PageTables: 457516 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 72364108 kB Committed_AS: 22305444 kB VmallocTotal: 34359738367 kB VmallocUsed: 480164 kB VmallocChunk: 34290830848 kB HardwareCorrupted: 0 kB AnonHugePages: 12216320 kB HugePages_Total: 2048 HugePages_Free: 2048 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB DirectMap4k: 5604 kB DirectMap2M: 2078720 kB DirectMap1G: 132120576 kB Slabtop: slabtop --once Active / Total Objects (% used) : 225920064 / 226193412 (99.9%) Active / Total Slabs (% used) : 11556364 / 11556415 (100.0%) Active / Total Caches (% used) : 110 / 194 (56.7%) Active / Total Size (% used) : 43278793.73K / 43315465.42K (99.9%) Minimum / Average / Maximum Object : 0.02K / 0.19K / 4096.00K OBJS ACTIVE USE OBJ SIZE SLABS OBJ/SLAB CACHE SIZE NAME 221416340 221416039 3% 0.19K 11070817 20 44283268K dentry 1123443 1122739 99% 0.41K 124827 9 499308K fuse_request 1122320 1122180 99% 0.75K 224464 5 897856K fuse_inode 761539 754272 99% 0.20K 40081 19 160324K vm_area_struct 437858 223259 50% 0.10K 11834 37 47336K buffer_head 353353 347519 98% 0.05K 4589 77 18356K anon_vma_chain 325090 324190 99% 0.06K 5510 59 22040K size-64 146272 145422 99% 0.03K 1306 112 5224K size-32 137625 137614 99% 1.02K 45875 3 183500K nfs_inode_cache 128800 118407 91% 0.04K 1400 92 5600K anon_vma 59101 46853 79% 0.55K 8443 7 33772K radix_tree_node 52620 52009 98% 0.12K 1754 30 7016K size-128 19359 19253 99% 0.14K 717 27 2868K sysfs_dir_cache 10240 7746 75% 0.19K 512 20 2048K filp VFS cache pressure: cat /proc/sys/vm/vfs_cache_pressure 125 Swappiness: cat /proc/sys/vm/swappiness 0 I know that unused memory is wasted memory, so this should not necessarily be a bad thing (especially given that 44 GB are shown as SReclaimable). However, apparently the machine experienced problems nonetheless, and I'm afraid the same will happen again in a few days when Slab surpasses 90 GB. Questions I have these questions: Am I correct in thinking that the Slab memory is always physical RAM, and the number is already subtracted from the MemFree value? Is such a high number of dentry entries normal? The PHP application has access to around 1.5 M files, however most of them are archives and not being accessed at all for regular web traffic. What could be an explanation for the fact that the number of cached inodes is much lower than the number of cached dentries, should they not be related somehow? If the system runs into memory trouble, should the kernel not free some of the dentries automatically? What could be a reason that this does not happen? Is there any way to "look into" the dentry cache to see what all this memory is (i.e. what are the paths that are being cached)? Perhaps this points to some kind of memory leak, symlink loop, or indeed to something the PHP application is doing wrong. The PHP application code as well as all asset files are mounted via GlusterFS network file system, could that have something to do with it? Please keep in mind that I can not investigate as root, only as a regular user, and that the administrator refuses to help. He won't even run the typical echo 2 > /proc/sys/vm/drop_caches test to see if the Slab memory is indeed reclaimable. Any insights into what could be going on and how I can investigate any further would be greatly appreciated. Updates Some further diagnostic information: Mounts: cat /proc/self/mounts rootfs / rootfs rw 0 0 proc /proc proc rw,relatime 0 0 sysfs /sys sysfs rw,relatime 0 0 devtmpfs /dev devtmpfs rw,relatime,size=66063000k,nr_inodes=16515750,mode=755 0 0 devpts /dev/pts devpts rw,relatime,gid=5,mode=620,ptmxmode=000 0 0 tmpfs /dev/shm tmpfs rw,relatime 0 0 /dev/mapper/sysvg-lv_root / ext4 rw,relatime,barrier=1,data=ordered 0 0 /proc/bus/usb /proc/bus/usb usbfs rw,relatime 0 0 /dev/sda1 /boot ext4 rw,relatime,barrier=1,data=ordered 0 0 tmpfs /phptmp tmpfs rw,noatime,size=1048576k,nr_inodes=15728640,mode=777 0 0 tmpfs /wsdltmp tmpfs rw,noatime,size=1048576k,nr_inodes=15728640,mode=777 0 0 none /proc/sys/fs/binfmt_misc binfmt_misc rw,relatime 0 0 cgroup /cgroup/cpuset cgroup rw,relatime,cpuset 0 0 cgroup /cgroup/cpu cgroup rw,relatime,cpu 0 0 cgroup /cgroup/cpuacct cgroup rw,relatime,cpuacct 0 0 cgroup /cgroup/memory cgroup rw,relatime,memory 0 0 cgroup /cgroup/devices cgroup rw,relatime,devices 0 0 cgroup /cgroup/freezer cgroup rw,relatime,freezer 0 0 cgroup /cgroup/net_cls cgroup rw,relatime,net_cls 0 0 cgroup /cgroup/blkio cgroup rw,relatime,blkio 0 0 /etc/glusterfs/glusterfs-www.vol /var/www fuse.glusterfs rw,relatime,user_id=0,group_id=0,default_permissions,allow_other,max_read=131072 0 0 /etc/glusterfs/glusterfs-upload.vol /var/upload fuse.glusterfs rw,relatime,user_id=0,group_id=0,default_permissions,allow_other,max_read=131072 0 0 sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0 172.17.39.78:/www /data/www nfs rw,relatime,vers=3,rsize=65536,wsize=65536,namlen=255,hard,proto=tcp,port=38467,timeo=600,retrans=2,sec=sys,mountaddr=172.17.39.78,mountvers=3,mountport=38465,mountproto=tcp,local_lock=none,addr=172.17.39.78 0 0 Mount info: cat /proc/self/mountinfo 16 21 0:3 / /proc rw,relatime - proc proc rw 17 21 0:0 / /sys rw,relatime - sysfs sysfs rw 18 21 0:5 / /dev rw,relatime - devtmpfs devtmpfs rw,size=66063000k,nr_inodes=16515750,mode=755 19 18 0:11 / /dev/pts rw,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=000 20 18 0:16 / /dev/shm rw,relatime - tmpfs tmpfs rw 21 1 253:1 / / rw,relatime - ext4 /dev/mapper/sysvg-lv_root rw,barrier=1,data=ordered 22 16 0:15 / /proc/bus/usb rw,relatime - usbfs /proc/bus/usb rw 23 21 8:1 / /boot rw,relatime - ext4 /dev/sda1 rw,barrier=1,data=ordered 24 21 0:17 / /phptmp rw,noatime - tmpfs tmpfs rw,size=1048576k,nr_inodes=15728640,mode=777 25 21 0:18 / /wsdltmp rw,noatime - tmpfs tmpfs rw,size=1048576k,nr_inodes=15728640,mode=777 26 16 0:19 / /proc/sys/fs/binfmt_misc rw,relatime - binfmt_misc none rw 27 21 0:20 / /cgroup/cpuset rw,relatime - cgroup cgroup rw,cpuset 28 21 0:21 / /cgroup/cpu rw,relatime - cgroup cgroup rw,cpu 29 21 0:22 / /cgroup/cpuacct rw,relatime - cgroup cgroup rw,cpuacct 30 21 0:23 / /cgroup/memory rw,relatime - cgroup cgroup rw,memory 31 21 0:24 / /cgroup/devices rw,relatime - cgroup cgroup rw,devices 32 21 0:25 / /cgroup/freezer rw,relatime - cgroup cgroup rw,freezer 33 21 0:26 / /cgroup/net_cls rw,relatime - cgroup cgroup rw,net_cls 34 21 0:27 / /cgroup/blkio rw,relatime - cgroup cgroup rw,blkio 35 21 0:28 / /var/www rw,relatime - fuse.glusterfs /etc/glusterfs/glusterfs-www.vol rw,user_id=0,group_id=0,default_permissions,allow_other,max_read=131072 36 21 0:29 / /var/upload rw,relatime - fuse.glusterfs /etc/glusterfs/glusterfs-upload.vol rw,user_id=0,group_id=0,default_permissions,allow_other,max_read=131072 37 21 0:30 / /var/lib/nfs/rpc_pipefs rw,relatime - rpc_pipefs sunrpc rw 39 21 0:31 / /data/www rw,relatime - nfs 172.17.39.78:/www rw,vers=3,rsize=65536,wsize=65536,namlen=255,hard,proto=tcp,port=38467,timeo=600,retrans=2,sec=sys,mountaddr=172.17.39.78,mountvers=3,mountport=38465,mountproto=tcp,local_lock=none,addr=172.17.39.78 GlusterFS config: cat /etc/glusterfs/glusterfs-www.vol volume remote1 type protocol/client option transport-type tcp option remote-host 172.17.39.71 option ping-timeout 10 option transport.socket.nodelay on # undocumented option for speed # http://gluster.org/pipermail/gluster-users/2009-September/003158.html option remote-subvolume /data/www end-volume volume remote2 type protocol/client option transport-type tcp option remote-host 172.17.39.72 option ping-timeout 10 option transport.socket.nodelay on # undocumented option for speed # http://gluster.org/pipermail/gluster-users/2009-September/003158.html option remote-subvolume /data/www end-volume volume remote3 type protocol/client option transport-type tcp option remote-host 172.17.39.73 option ping-timeout 10 option transport.socket.nodelay on # undocumented option for speed # http://gluster.org/pipermail/gluster-users/2009-September/003158.html option remote-subvolume /data/www end-volume volume remote4 type protocol/client option transport-type tcp option remote-host 172.17.39.74 option ping-timeout 10 option transport.socket.nodelay on # undocumented option for speed # http://gluster.org/pipermail/gluster-users/2009-September/003158.html option remote-subvolume /data/www end-volume volume replicate1 type cluster/replicate option lookup-unhashed off # off will reduce cpu usage, and network option local-volume-name 'hostname' subvolumes remote1 remote2 end-volume volume replicate2 type cluster/replicate option lookup-unhashed off # off will reduce cpu usage, and network option local-volume-name 'hostname' subvolumes remote3 remote4 end-volume volume distribute type cluster/distribute subvolumes replicate1 replicate2 end-volume volume iocache type performance/io-cache option cache-size 8192MB # default is 32MB subvolumes distribute end-volume volume writeback type performance/write-behind option cache-size 1024MB option window-size 1MB subvolumes iocache end-volume ### Add io-threads for parallel requisitions volume iothreads type performance/io-threads option thread-count 64 # default is 16 subvolumes writeback end-volume volume ra type performance/read-ahead option page-size 2MB option page-count 16 option force-atime-update no subvolumes iothreads end-volume

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  • better tool than netstat

    - by Stan
    OS: Windows server/ Windows XP Is there any port scan tool that can do what netstat does and also has a filter feature? So unnecessary connections can be hide. Thanks.

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  • Install qpid-tool

    - by c0mrade
    Does anyone know how to install qpid-tool on ubuntu/centOS? http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_MRG/1.1/html/Messaging_User_Guide/sect-Messaging_User_Guide-Command_Line_Tools-Using_qpid_tool.html Can't fing binary files or anything

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  • Command line tool for MediaWiki?

    - by Magnus
    Is there a command line tool that would allow me to script creation of accounts on a MediaWiki instance? The UI for creating an account is painful, and very time consuming when tasked with creating 10+ accounts at a time. Unfortunately I can't get ImportUsers to work due to the very old version of MediaWiki we use (and upgrading is unfortunately not possible at this time).

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