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  • Tool to compute SHA256 Tree Hash

    - by Benjamin
    I've started using AWS Glacier, and noticed that it hashes the files using an algorithm called SHA-256 Tree Hash. To my surprise, this algorithm is different from SHA-256, so I can't use the tools I'm used to, to compare hashes and verify file integrity. Do you know a Windows tool, if possible integrated in the context menu, to compute the SHA-256 Tree Hash of a file? I'd also accept a Linux command-line tool, as a second choice :-)

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  • Proxy / Squid 2.7 / Debian Wheezy 6.7 / lots of TCP Timed-out

    - by Maroon Ibrahim
    i'm facing a lot of TCP timed-out on a busy cache server and here below my sysctl.conf configuration as well as an output of "netstat -st" Kernel 3.2.0-4-amd64 #1 SMP Debian 3.2.57-3 x86_64 GNU/Linux Any advice or help would be highly appreciated #################### Sysctl.conf cat /etc/sysctl.conf net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_tw_recycle = 1 fs.file-max = 65536 net.ipv4.tcp_low_latency = 1 net.core.wmem_max = 8388608 net.core.rmem_max = 8388608 net.ipv4.ip_local_port_range = 1024 65000 fs.aio-max-nr = 131072 net.ipv4.tcp_fin_timeout = 10 net.ipv4.tcp_keepalive_time = 60 net.ipv4.tcp_keepalive_intvl = 10 net.ipv4.tcp_keepalive_probes = 3 kernel.threads-max = 131072 kernel.msgmax = 32768 kernel.msgmni = 64 kernel.msgmnb = 65536 kernel.shmmax = 68719476736 kernel.shmall = 4294967296 net.ipv4.ip_forward = 1 net.ipv4.tcp_timestamps = 0 net.ipv4.conf.all.accept_redirects = 0 net.ipv4.tcp_window_scaling = 1 net.ipv4.tcp_sack = 0 net.ipv4.tcp_syncookies = 1 net.ipv4.ip_dynaddr = 1 vm.swappiness = 0 vm.drop_caches = 3 net.ipv4.tcp_moderate_rcvbuf = 1 net.ipv4.tcp_no_metrics_save = 1 net.ipv4.tcp_ecn = 0 net.ipv4.tcp_max_orphans = 131072 net.ipv4.tcp_orphan_retries = 1 net.ipv4.conf.default.rp_filter = 0 net.ipv4.conf.default.accept_source_route = 0 net.ipv4.tcp_max_syn_backlog = 32768 net.core.netdev_max_backlog = 131072 net.ipv4.tcp_mem = 6085248 16227328 67108864 net.ipv4.tcp_wmem = 4096 131072 33554432 net.ipv4.tcp_rmem = 4096 174760 33554432 net.core.rmem_default = 33554432 net.core.rmem_max = 33554432 net.core.wmem_default = 33554432 net.core.wmem_max = 33554432 net.core.somaxconn = 10000 # ################ Netstat results /# netstat -st IcmpMsg: InType0: 2 InType3: 233754 InType8: 56251 InType11: 23192 OutType0: 56251 OutType3: 437 OutType8: 4 Tcp: 20680741 active connections openings 63642431 passive connection openings 1126690 failed connection attempts 2093143 connection resets received 13059 connections established 2649651696 segments received 2195445642 segments send out 183401499 segments retransmited 38299 bad segments received. 14648899 resets sent UdpLite: TcpExt: 507 SYN cookies sent 178 SYN cookies received 1376771 invalid SYN cookies received 1014577 resets received for embryonic SYN_RECV sockets 4530970 packets pruned from receive queue because of socket buffer overrun 7233 packets pruned from receive queue 688 packets dropped from out-of-order queue because of socket buffer overrun 12445 ICMP packets dropped because they were out-of-window 446 ICMP packets dropped because socket was locked 33812202 TCP sockets finished time wait in fast timer 622 TCP sockets finished time wait in slow timer 573656 packets rejects in established connections because of timestamp 133357718 delayed acks sent 23593 delayed acks further delayed because of locked socket Quick ack mode was activated 21288857 times 839 times the listen queue of a socket overflowed 839 SYNs to LISTEN sockets dropped 41 packets directly queued to recvmsg prequeue. 79166 bytes directly in process context from backlog 24 bytes directly received in process context from prequeue 2713742130 packet headers predicted 84 packets header predicted and directly queued to user 1925423249 acknowledgments not containing data payload received 877898013 predicted acknowledgments 16449673 times recovered from packet loss due to fast retransmit 17687820 times recovered from packet loss by selective acknowledgements 5047 bad SACK blocks received Detected reordering 11 times using FACK Detected reordering 1778091 times using SACK Detected reordering 97955 times using reno fast retransmit Detected reordering 280414 times using time stamp 839369 congestion windows fully recovered without slow start 4173098 congestion windows partially recovered using Hoe heuristic 305254 congestion windows recovered without slow start by DSACK 933682 congestion windows recovered without slow start after partial ack 77828 TCP data loss events TCPLostRetransmit: 5066 2618430 timeouts after reno fast retransmit 2927294 timeouts after SACK recovery 3059394 timeouts in loss state 75953830 fast retransmits 11929429 forward retransmits 51963833 retransmits in slow start 19418337 other TCP timeouts 2330398 classic Reno fast retransmits failed 2177787 SACK retransmits failed 742371590 packets collapsed in receive queue due to low socket buffer 13595689 DSACKs sent for old packets 50523 DSACKs sent for out of order packets 4658236 DSACKs received 175441 DSACKs for out of order packets received 880664 connections reset due to unexpected data 346356 connections reset due to early user close 2364841 connections aborted due to timeout TCPSACKDiscard: 1590 TCPDSACKIgnoredOld: 241849 TCPDSACKIgnoredNoUndo: 1636687 TCPSpuriousRTOs: 766073 TCPSackShifted: 74562088 TCPSackMerged: 169015212 TCPSackShiftFallback: 78391303 TCPBacklogDrop: 29 TCPReqQFullDoCookies: 507 TCPChallengeACK: 424921 TCPSYNChallenge: 170388 IpExt: InBcastPkts: 351510 InOctets: -609466797 OutOctets: -1057794685 InBcastOctets: 75631402 #

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  • Desktop virtualization

    - by gurpal2000
    Is there currently a proper Type 1 "desktop" hypervisor? Either free or not? This is just for tinkering around at home on some beefy Phenom machines. Basically i want to be able to run say 2 OSs on the same PC but without loading windows or a heavy flavour of linux and then use a hotkey to switch between them. I should get full performance out of them. So do i need something better than vmware workstation and/or virtualbox. I think these are "Type 2"? I already run VMWare w/s and VBox but is there a more performant solution? I saw a YouTube video from Citrix where a laptop was running XP and Vista. With the touch of a hot key they could switch between them. There was no visible underlying OS (there might be a hypervisor)? I have access to Citrix XenDesktop 3 enterprise edition evaluation. I realise this isn't for desktops but can i achieve my goal (geekiness) ? If i use the free XenServer 5.5.0 how do my client PCs access windows/linux/whatever from the xenserver? Is it via a thin client RDP type application? If so if there one for both windows and linux? Also if i do use XenServer can i use USB in either direction? What is Citrix receiver can i use that for (3) ? If so, is there some hotkey i can configure? whatever client is used to access the server software (whether it be on a different server or local) can i get full opengl/directx acceleration? what about Xen? i tried the Xen LiveCD but no clue as how to configure it. As you can see much confusion. Any help/pointers welcome. Cheers.

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  • Stream video from a computer to a tablet

    - by NullOrEmpty
    I would like to watch presentations and college videos I have on my computer, from my tablet. There are almost a hundred of GB in videos, so I would like to watch them in streaming from my computer. My wife has also tons of videos so I have decided to do a kind of streaming local service to watch the videos from our tablets. I have found an article about how to do it with Internet Information Server, but the article is relaying in an application that is not free (Expression Encoder). Since this is for home fun, I am not willing to pay, so I would like to ask for some free encoder that can do the trick. I have no idea about streaming. Actually, I tried to hang the files directly on IIS, and the browser tried first to download some of them and some other (mp4?) got played badly, so I could not get a smooth video experience. What is missing? What is the deal with H.264 ? Can I roll with VC-1 and play videos in my Android tablet with streaming with an acceptable quality through my WLAN home network? Any better solution? Thanks.

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  • How do I make ESXi 5.0 to shutdown virtual machines when the physical power button is pushed?

    - by Pawel Sawicki
    I have a home NAS/DLNA server built out of an HP Micro Server with the HP branded VMware ESXi 5.0.0 build-623860 (free license) installed. Being a home media center I'd like it to be "manageable" by all my household members. This requires that it needs to be powered on an off (including all the VMs inside) by anybody with the physical access to the server by simply pressing the power button on the chassis. The "startup" part is easy to obtain - all I had to do was to configure the startup/shutdown policy: Once the server powers up, all VMs start as well and that's exactly what I need. Well.. it did work up until 5.0.0U1, but that's a different story: http://blogs.vmware.com/vsphere/2012/03/free-esxi-hypervisor-auto-start-breaks-with-50-update-1.html Unfortunately, pressing the power button doesn't gracefully shutdown the guest machines - they are terminated instead. If I run the "shut down" command from the vSphere Client interface guests are powered off. I'd like to get the same end result when the physical power button is switched. I've poked around a bit on the ESXi server. There's a "/sbin/shutdown.sh" script that seemed to do exactly what I need... but after trying it does exactly what the power off button. The "/etc/inittab" contains an entry for the "shutdown" level but I suppose it's not hooked to the power button. I can't find any acpi related configuration, neither do I know what exactly is executed when the power button is pressed. Does anybody have a clue how can I make the VMs shutdown automatically when the physical power switch is pressed to turn of the computer?

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  • Use lineout on Mac for audio processing

    - by eltufto
    Does anyone know of a way to set the linein on a Mac to route from the lineout? I want to essentially work with the music played on my Mac. An alternative solution I suppose would be to set the Linein as the output from iTunes/other music player. For context: My specific use-case is audio processing in Processing with the minim library, calling getLineIn. Trying to create some visuals that respond to the music being played.

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  • Recommendations for hosting large videos

    - by Clinton Blackmore
    I recently created and put a 45-minute, 300 MB video file on my website and told a mailing list about it. Checking my site stats, I see that I've used 20% of my "unlimited" bandwidth for the month. As I want to be able to have several videos like this, clearly, I need to consider other options. The appeal to hosting files as my own site (aside from the supposedly unlimited disk space and bandwidth), is to be able to have control over the format, resolution, and quality of the video(s), as well as to ensure that it is clear that I'm the copyright holder (although the videos will be under a creative commons license). I find that for the screencasts I'm making, having a high resolution (say 3/4 of 1024 * 768) really makes seeing what is going on on the screen easier. It is also always a plus to not have the experience marred by advertisements. One more wrench to throw in is that while the videos are non-commercial, they do promote a club, and it seems that that falls afoul of some terms of services (especially for free services; while free is very nice, I will certainly consider putting up some money.) What recommendations do you have for (fairly) long, high-resolution videos? Should I look in depth at sites like YouTube and Vimeo, should I be considering a filesharing site [I have no qualms with someone downloading the entire video first -- I wouldn't want to watch 45 minutes in my browser!], hosting files with Bittorent (ugh -- I think that'd reduce my audience), or should I be looking into other web hosts (and if so, who?)

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  • How do I view raw email headers in Outlook 2010?

    - by Ville
    Is it possible to view raw / complete email headers in Outlook 2010? In Outlook 2007 you could go to View Options, or right click on a message, then select Options, and "Internet Headers" could be viewed. However, in Outlook 2010 there is no "Options" in the context menu nor can I find it elsewhere. Has it been removed altogether or moved (hidden) someplace else? Thanks for any advise!

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  • Help! The log file for database 'tempdb' is full. Back up the transaction log for the database to fr

    - by michael.lukatchik
    We're running SQL Server 2000. In our database, we have an "Orders" table with approximately 750,000 rows. We can perform simple SELECT statements on this table. However, when we want to run a query like SELECT TOP 100 * FROM Orders ORDER BY Date_Ordered DESC, we receive the following message: Error: 9002, Severity: 17, State: 6 The log file for database 'tempdb' is full. Back up the transaction log for the database to free up some log space. We have other tables in our database which are similar in size of the amount of records that are in the tables (i.e. 700,000 records). On these tables, we can run any queries we'd like and we never receive a message about 'tempdb being full'. To resolve this, we've backed up our database, shrunk the actual database and also shrunk the database and files in the tempdb system database, but this hasn't resolved the issue. The size of our log file is set to autogrow. We're not sure where to go next. Are there any ideas why we still might be receiving this message? Error: 9002, Severity: 17, State: 6 The log file for database 'tempdb' is full. Back up the transaction log for the database to free up some log space.

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  • WSS Search fills 10 GB limit on SBS server 2011

    - by Kactus
    I've got a SBS Server 2011 Standard SP1 that isn't very busy. 2 Users local and 2 remote. We have sharepoint that has maybe a dozen small documents at most. I've just started getting the following two error occur Could not allocate space for object 'dbo.MSSBatchHistory'.'IX_MSSBatchHistory' in database 'WSS_Search_SERVER' because the 'PRIMARY' filegroup is full. Create disk space by deleting unneeded files, dropping objects in the filegroup, adding additional files to the filegroup, or setting autogrowth on for existing files in the filegroup. And CREATE DATABASE or ALTER DATABASE failed because the resulting cumulative database size would exceed your licensed limit of 10240 MB per database. Digging around in SQL manager I see that WSS Search DB file size is 10241MB, the log file is only 147 MB Firstly, why is WSS Search taking up so much space? How can I stop it from doing so, and what can I do now to get things running ok. I know about log file truncating and this isn't the case here since the log is tiny. Any help is appreciated. There is plenty of free space on the disk (791GB free) Thanks Kactus

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  • Opening an existing process

    - by Grasper
    I am using Eclipse in Linux through a remote connection (xrdp). My internet got disconnected, so I got disconnected from the server while eclipse was running. Now I logged in again, and I do the "top" command I can see that eclipse is running and still under my user name. Is there some way I can bring that process back into my view (I do not want to kill it because I am in the middle of checking in a large swath of code)? It doesnt show up on the bottom panel after I logged in again. Here is the "top" output: /home/mclouti% top top - 08:32:31 up 43 days, 13:06, 29 users, load average: 0.56, 0.79, 0.82 Tasks: 447 total, 1 running, 446 sleeping, 0 stopped, 0 zombie Cpu(s): 6.0%us, 0.7%sy, 0.0%ni, 92.1%id, 1.1%wa, 0.1%hi, 0.1%si, 0.0%st Mem: 3107364k total, 2975852k used, 131512k free, 35756k buffers Swap: 2031608k total, 59860k used, 1971748k free, 817816k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 13415 mclouti 15 0 964m 333m 31m S 21.2 11.0 83:12.96 eclipse 16040 mclouti 15 0 2608 1348 888 R 0.7 0.0 0:00.12 top 31395 mclouti 15 0 29072 20m 8524 S 0.7 0.7 611:08.08 Xvnc 2583 root 20 0 898m 2652 1056 S 0.3 0.1 139:26.82 automount 28990 postgres 15 0 13564 868 304 S 0.3 0.0 26:33.36 postgres 28995 postgres 16 0 13808 1248 300 S 0.3 0.0 6:54.95 postgres 31440 mclouti 15 0 3072 1592 1036 S 0.3 0.1 6:01.54 gam_server 1 root 15 0 2072 524 496 S 0.0 0.0 0:03.00 init 2 root RT -5 0 0 0 S 0.0 0.0 0:04.53 migration/0 3 root 34 19 0 0 0 S 0.0 0.0 0:00.04 ksoftirqd/0 4 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/0 5 root RT -5 0 0 0 S 0.0 0.0 0:01.72 migration/1 6 root 34 19 0 0 0 S 0.0 0.0 0:00.07 ksoftirqd/1 7 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/1 8 root RT -5 0 0 0 S 0.0 0.0 0:04.33 migration/2 9 root 34 19 0 0 0 S 0.0 0.0 0:00.05 ksoftirqd/2

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  • URL sniffer/downloader

    - by Ricket
    Some websites have Flash content that plays music or videos. Most of the time they don't show you the URL of these music or videos, but for example, you can sniff a YouTube webpage and find the flv file that YouTube is actually requesting and playing. Right now I'm using Orbit Downloader, which has a feature called Grab++ that does just this; you start it, and then you refresh the page, and it shows you all files of certain types (image, audio, video) that the webpage requests, and then you can select one or more and download and it downloads them. But, I don't like Orbit, it installs plugins and has the whole download manager thing which I don't really want. What is a good alternative program? I'm not looking for websites like kickyoutube.com, I want a URL sniffer I guess. HTTPGuideDog used to be my Firefox add-on that did exactly this, but it hasn't been updated even to FF3 (and yes I know I can hack it to load anyway, I'm looking for something natively available preferably). I vaguely know of WireShark but last time I used it, I believe it captures individual packets, which is a little too fine-tuned for me. I just want to be able to see what's happening, and download something that the webpage downloaded. Oh, and I'm using Windows 7. Linux probably has some fancy command-line tool, but it just won't cut it for me. :-\ Edit: Oh, and something free please. Feel free to mention paid solutions though.

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  • Mobile security solutions

    - by techzen
    What are the mobile security solutions used by you / your organization. What are the pro's and cons of usage of these solution - and how far have you been successful in implementing these - were there any loopholes / issues faced in using them?. In general, can you suggest a set of guidelines to watch for when going for going for selecting a specific solution in this context.

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  • How to crop Screen Recordings under Snow Leopard?

    - by willc2
    Quicktime Player for Snow Leopard now allows you record the screen. Awesome! Once you have a movie it will let you trim screen recordings for length. Is there a way to crop the movie's dimensions, either in QT or using some built-in or free software? Update: How to crop to an arbitrary size and aspect ratio? iMovie only seems to let you crop to the aspect ratio of the containing project. Result: Both good answers but since I have QuickTime Player 7 and Photoshop, that's the workflow I choose as the answer. NOTE: If you have Photoshop Extended, you can import a movie, use the crop tool, and Export the cropped movie. Not free or built-in, but convenient. To summarize the instructions from the video link ricbax posted: Open movie in QuickTime Player 7 Copy a frame and Paste it into a new document in Photoshop Draw a rectangular selection around the area to keep and fill with black Invert the selection and fill with white Save as .GIF, with 2 colors Back in QuickTime Player 7, open Movie Properties window Select the Video Track Select the Visual Settings Tab Drag and Drop the 2-color .GIF file onto the Mask drop area (or use choose file button) Export the (now cropped) movie DONE

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  • Serving and caching content from Amazon S3 with Tomcat

    - by Rob
    Hi all, We're looking to serve a range of content using Amazon S3 as a store for the content and Tomcat to host the web application. The content is divided into free and paid for content. We intend to authenticate the users when they access the web application running in Tomcat. Based around their authentication we are able to tell if the user has access to paid for content or simply free stuff. So I envision the flow of a request being something like this: Authenticated request to Tomcat If user is "paid" user, display links to premium content Direct requests for paid content back through Tomcat to prevent direct access to it by non-paying users. Tomcat makes request to S3 through a web cache to keep our costs down Content is returned to user. As we have to pay for each request to S3, I'd ideally like to cache content locally to the Tomcat instance after it has been requested for the first time to keep costs to a minimum and to speed things up. I would also like to be able to invalidate this cache if we publish fresh content to S3. So to confirm my proposal: Client Request - Tomcat - Web Cache - S3 To invalidate the cache, I was thinking of using something like PubSubHubbub with the cache waiting for updates to the feed for content that it should invalidate. I'd appreciate some general feedback on this approach as I've no real experience of caching and I'm sure I've made some invalid assumptions. I'd also appreciate any recommendations for caching technologies. Thanks.

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  • Boot problem: weird sound...

    - by Wesley
    Here are the specs to put things into context: ECS P4M800PRO-M478 (V1.0) Intel P4 "Northwood" 2.8C GHz (HT) Socket 478 2x 512 MB PC2-4200 DDR2-533 RAM Visiontek Radeon HD 3650 512 MB DDR2 AGP Maxtor 120 GB SATA HDD The Best Power 500 W ATX PSU Anyways, it's not booting Windows XP SP3 properly. Specifically, there is a sound when it fails to boot and the computer automatically restarts. You can listen to the sound here. What could be the problem?

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  • Best software to rotate monitor picture 90 degrees

    - by Erik Vold
    What free software, preferably open source, will allow me to rotate the output to my widescreen monitor by 90 degrees? I had some software that came with my monitor to do this, called magiv view or something.. but it conflicted with tortoise svn in the context menu so I had to stop using it. Is there anything else that I can use or do?

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  • How do I boot to the Recovery Partition on an eMachines D620 notebook?

    - by GraemeF
    I installed the Windows 7 RC on my wife's laptop and now need to reinstall Vista for her. I was very careful to leave the recovery partition intact so that I could do this, but I don't see a way to boot to it. In the Disk Management console I can see the "9.77GB Healthy (Recovery Partition)" partition but I can't do anything with it - the context menu only contains the Help option. Any ideas?

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  • Excel - "send to Mail recipient" creates 2nd copy of EMail in Inbox

    - by ssollinger
    When sending Excel sheets using the menu item "File" - "Sent To" - "Mail recipient (as attachment)" I get additional copies of the email in the Inbox. When I press "send" then I get 2 copies of the email in Outlook - as expected one in the Outbox (which moves into the Sent folder as soon it is sent off) and an additional one in the Inbox. How do I stop the copy message appearing in the Inbox? System: Excel 2000, Outlook 2000, Windows XP. Antivirus is AVG Free 2011. I know this is a very old system, but it is not my PC and there isn't any chance to get it replaced in the near future yet. SOme further details: The copy in the inbox appears at the same time as the normal copy goes into the Outbox (i.e. as soon I press send). It doesn't contain anything in the From field (i.e. there is no sender, just the recipient of the mail). It has a different icon in Outlook to the other emails - the icon is the one for "saved or unsent message". I tried it with a few different spreadsheets and it happens with all of them. It happens with every recipient, and it only happens if sending from within Excel (i.e. using the Send to menu item). I can delete the attachment before sending and it will still create a copy. If I create a new message in Outlook and then add the Excel document as attachment then I don't get the copy of the message in the inbox, it only happens when using the send to item in Excel. It only started doing this recently. Around that time the Antivirus (AVG Free) was upgraded to the latest version (from the previous version - 2010? - to version 2011), but this might not be related. I thought I know Excel really well but have never seen this happening before, and I can't find any setting in Excel or Outlook that is causing this. Any ideas?

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  • RAM being displayed is lesser than the actual in my Windows 7

    - by Prateek Somani
    I am using Windows 7 and Ubuntu on the same machine. Earlier I had 3 GB of RAM,but now the Windows is displaying just 1 GB of RAM. Please also find the output of the free command in my Ubuntu : total used free shared buffers cached Mem: 1008208 904808 103400 5736 13516 239596 -/+ buffers/cache: 651696 356512 Swap: 3127292 10252 3117040 Has the swap memory consumed my 2 GB of RAM? Will I be able to use the whole of 3GB of the RAM in my Windows? Regards, Prateek Update : I tried to run the lshw command and I got the following output : *-memory description: System Memory physical id: 1b slot: System board or motherboard size: 1GiB *-bank:0 description: SODIMM DDR3 Synchronous 1067 MHz (0.9 ns) product: HMT112S6BFR6C-H9 vendor: Hynix physical id: 0 serial: 2C71D069 slot: Bottom - Slot 1 size: 1GiB width: 64 bits clock: 1067MHz (0.9ns) *-bank:1 description: SODIMM DDR3 Synchronous 1067 MHz (0.9 ns) [empty] product: 16JSF25664HZ-1G4F1 vendor: Micron physical id: 1 serial: FD421821 slot: Bottom - Slot 2 width: 64 bits clock: 1067MHz (0.9ns) Why it is able to detect the vendor/product name of the bank-1 RAM, why can't it detect the RAM size and other details ? Has my RAM got faulty?

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  • 0% CPU in top for all processes, but load average > 1

    - by chrisdew
    On two different servers (with Ubuntu 12.04LTS AMD64) I have seen the following behaviour: op - 10:50:05 up 305 days, 21:17, 1 user, load average: 1.94, 2.52, 2.97 Tasks: 141 total, 2 running, 139 sleeping, 0 stopped, 0 zombie Cpu(s): 41.5%us, 6.5%sy, 0.0%ni, 51.8%id, 0.0%wa, 0.2%hi, 0.1%si, 0.0%st Mem: 8178432k total, 5753740k used, 2424692k free, 159480k buffers Swap: 15625208k total, 0k used, 15625208k free, 4905292k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1 root 20 0 23928 2072 1216 S 0 0.0 0:56.42 init 2 root 20 0 0 0 0 S 0 0.0 0:00.01 kthreadd 3 root RT 0 0 0 0 S 0 0.0 0:01.23 migration/0 4 root 20 0 0 0 0 S 0 0.0 2:39.82 ksoftirqd/0 5 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/0 6 root RT 0 0 0 0 S 0 0.0 0:02.99 migration/1 7 root 20 0 0 0 0 S 0 0.0 2:32.15 ksoftirqd/1 8 root RT 0 0 0 0 S 0 0.0 0:00.00 watchdog/1 9 root RT 0 0 0 0 S 0 0.0 0:11.67 migration/2 10 root 20 0 0 0 0 S 0 0.0 29:00.34 ksoftirqd/2 The server is working fine, but top shows all processes as using 0% CPU. A reboot fixed this on an earlier machine, but I haven't yet tried it on this one. I have tried top several times, and so am sure that I haven't accidentally pressed '<' or '' to sort by a different column. Sorting the process list by all of the available columns, stills shows 0% CPU for all displayed processes. What is going on? If this a kernel bug? Update: If I use top -p <PID> for a know, busy process, top still displays 0% CPU for that process.

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  • Tool to Save a Range of Disk Clusters to a File

    - by Synetech inc.
    Hi, Yesterday I deleted a (fragmented) archive file only to find that it did not extract correctly, so I was left stranded. Fortunately there was not much space free on the drive, so most of the space marked as free was from the now-deleted archive. I pulled up a disk editor and—painfully—managed to get a list of cluster ranges from the FAT that were marked as unused. My task then was to save these ranges of clusters to files so that I could examine them to try to determine which parts were from the archive and recombine them to attempt to restore the deleted file. This turned out to be a huge pain in the butt because the disk editor did not have the ability to select a range of clusters, so I had to navigate to the start of each cluster and hold down Ctrl+Shift+PgDn until I reached the end of the range (which usually took forever!) I did a quick Google search to see if I could find a command-line tool (preferably with Windows and DOS versions) that would allow me to issue a commands such as: SAVESECT -c 0xBEEF 0xCAFE FOO.BAR ::save clusters 0xBEEF-0xCAFE to FOO.BAR SAVESECT -s 1111 9876 BAZ.BIN ::save sectors 1111-9876 to BAZ.BIN Sadly my search came up empty. Any ideas? Thanks!

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