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  • Troubleshooting Nonpaged and Paged Pool Errors in Windows

    Ben Lye uncovered a memory leak in the nonpaged pool which was crashing his servers with disquieting regularity. Luckily it was relatively easy to troubleshoot, and he's sharing the tools and techniques he used to get his servers back on track in double-quick time....Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • what's included in a typical computer architecture class? [closed]

    - by sq1020
    Does this description fit what's usually included in a computer architecture class? Computer Organization and Assembly Language An introduction to the hardware organization and assembly language of the Intel processor. Topics include memory hierarchy and design- CPU design- pipelining- addressing modes- subroutine linkage- polled input/output- interrupts- high level language interfacing and macros.

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  • Secret of SQL Trace Duration Column

    - by Dan Guzman
    Why would a trace of long-running queries not show all queries that exceeded the specified duration filter?  We have a server-side SQL Trace that includes RPC:Completed and SQL:BatchCompleted events with a filter on Duration >= 100000.  Nearly all of the queries on this busy OLTP server run in under this 100 millisecond threshold so any that appear in the trace are candidates for root cause analysis and/or performance tuning opportunities. After an application experienced query timeouts, the DBA looked at the trace data to corroborate the problem.  Surprisingly, he found no long-running queries in the trace from the application that experienced the timeouts even though the application’s error log clearly showed detail of the problem (query text, duration, start time, etc.).  The trace did show, however, that there were hundreds of other long-running queries from different applications during the problem timeframe.  We later determined those queries were blocked by a large UPDATE query against a critical table that was inadvertently run during this busy period. So why didn’t the trace include all of the long-running queries?  The reason is because the SQL Trace event duration doesn’t include the time a request was queued while awaiting a worker thread.  Remember that the server was under considerable stress at the time due to the severe blocking episode.  Most of the worker threads were in use by blocked queries and new requests were queued awaiting a worker to free up (a DMV query on the DAC connection will show this queuing: “SELECT scheduler_id, work_queue_count FROM sys.dm_os_schedulers;”).  Technically, those queued requests had not started.  As worker threads became available, queries were dequeued and completed quickly.  These weren’t included in the trace because the duration was under the 100ms duration filter.  The duration reflected the time it took to actually run the query but didn’t include the time queued waiting for a worker thread. The important point here is that duration is not end-to-end response time.  Duration of RPC:Completed and SQL:BatchCompleted events doesn’t include time before a worker thread is assigned nor does it include the time required to return the last result buffer to the client.  In other words, duration only includes time after the worker thread is assigned until the last buffer is filled.  But be aware that duration does include the time need to return intermediate result set buffers back to the client, which is a factor when large query results are returned.  Clients that are slow in consuming results sets can increase the duration value reported by the trace “completed” events.

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  • BI&EPM in Focus April 2012

    - by Mike.Hallett(at)Oracle-BI&EPM
    General News Oracle OpenWorld call for papers now open, now through April 9 (link) Oracle Announces Availability of Oracle Exalytics In-Memory Machine (link) Oracle EPM and BI Support Newsletter Current Edition - Volume 3 : March 2012 (link) Customers Asiana Airlines Improves Passenger Management with Near-Real-Time Reservation and Ticketing Information  Centraal Boekhuis Delivers Faster with Oracle BI 11g Essatto Software Speeds Data Aggregation Tenfold; Integrates BI, Performance Management, and Data Warehousing for Midsize Businesses Grupo WTorre Supports Management's Decision-Making with OBIEE, Ensuring Uniform, Reliable, and Consistent Data Indian Overseas Bank Cuts Planning Schedule by 45 Worker Days per Year, Assesses Market Risk Instantly with Business Intelligence System Kentucky Community and Technical College System Enables Data-Driven Decision-Making Using Integrated System with Management Dashboards National Australia Bank Achieves 200% ROI, Improves Data Quality and Reporting Integrity with Oracle Hyperion DRM R.L. Polk & Co. Enhances Business Intelligence Capabilities, Optimizes System Performance with Extreme Analytics Machine Test ResCare, Inc. Transforms Reporting to Improve Healthcare Service Performance with Oracle Business Analytics  Rochester City School District Uses OBIEE to Track Student Achievement, Identify Areas for Improvement, Accelerate Reporting  Société Générale Standardizes, Accelerates, and Improves Budget Planning Accuracy across Global Enterprise The State Accounting Office of Georgia Integrates Financial Information, Shortens Financial Closings and Streamlines Reporting across 175 Organizations   Events 4-day Oracle Real-Time Decisions Hands-on Technical Workshop for Partners (PTS, Free) May 14-17, 2012: Colombes, Paris, France Nordic events : “Latest Release of Oracle Hyperion EPM and BI Suites Helps Organizations Plan through Uncertainty, Improve Decision-Making and Meet Regulatory Requirements” (April 17, Sweden | April 18, Norway | April 19, Denmark | April 24, Finland) Webcast Replay from Balaji Yelamanchili and Paul Rodwick: “Analytics Without Limits - The Latest on Oracle Exalytics In-Memory Machine and Oracle Business Intelligence”  (link)  Wednesday, April 04, 2012: Business Analytics launch webcast: Invite your customers to register (link) Big Data Online Forum now available on Demand (link)  Enterprise Performance Management Webcast Replay: Accurate Forecasting within the Business Planning Cycle (link) Oracle Hyperion Profitability and Cost Management (HPCM) Master Support Note (link) Business  Intelligence Whitepaper: Driving Innovation Through Analytics (link) Gartner: CIOs Identify BI as the No. 1 Technology Priority for 2012 (link) Webcast Replay: Exalytics in Action: Airlines, US Census and Federal Spending Demo Applications  (link) NEWLY RELEASED Walk-in Video for Exalytics - Use This to Start Customer/Partner Meetings! (link) IDC Insight Paper: “Oracle's All-Out Assault on the Big Data Market: Offering Hadoop, R, Cubes, and Scalable IMDB in Familiar Packages” (link) System Requirements and Supported Platforms for Oracle Business Intelligence Suite Enterprise Edition 11gR1 Certification Matrix now published to include OBIEE 11.1.1.6.0 (link) Maintenance Release Guide (List of Bugs Fixed) for Oracle Business Intelligence Enterprise Edition (OBIEE) 11.1.1.6.0  (link) OBIEE 11.1.1.6: Is OBIEE 11.1.1.6 Certified With OBI Apps 7.9.6.3?  (link) Information Center: Troubleshooting Oracle Business Intelligence Applications (support login req'd)  (link)      

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  • The Fast Guide to Application Profiling

    In this sample chapter from his recently released book (co-Authored with Paul Glavich) Chris Farrell gives us a fast overview of performance profiling, memory profiling, profiling tools, and in fact everything we need to know when it comes to profiling our applications. This is a great first step, and The Complete Guide to .NET Performance Testing and Optimization is crammed with even more indispensable knowledge.

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  • Design Principles: An Illuminati For Better Solution

    From my earliest memory of programming, I was taught that we should do some level of design before coding. Somewhere around the way I started hearing phrases Dependency Injection, IoC etc., but whenever I asked people the need for these patterns, I seldom got an answer that satisfied me…

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  • CVE-2012-2763 Buffer overflow vulnerability in Gimp

    - by RitwikGhoshal
    CVE DescriptionCVSSv2 Base ScoreComponentProduct and Resolution CVE-2012-2763 Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability 7.5 Gimp Solaris 11 11/11 SRU 11.4 This notification describes vulnerabilities fixed in third-party components that are included in Oracle's product distributions.Information about vulnerabilities affecting Oracle products can be found on Oracle Critical Patch Updates and Security Alerts page.

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  • Did you get your Oracle Java Magazine with that?

    - by alexismp
    The Oracle Java Magazine November/December 2011 (#2) issue is out, including in downloadable PDF format. If you haven't already done so, subscribe (it's free) and get it. This edition has the following Java EE-related content: • Introduction to RESTful Web Services, Part 2 • Stress-testing Java EE 6 Applications • Adam Bien on bugs, bottlenecks, and memory leaks Expect more Java EE coverage in the January/Feb release.

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  • asus n550jv audio problem: no sound from notebook' speakers

    - by skywalker
    Ubuntu 13.10. The problem is: the internal speakers don't work. I have no problem when I'm using the headphones. There is no hardware issue since in windows 8 everything works perfectly(external subwoofer included). I'm trying to modify /etc/modprobe.d/alsa-base.conf but I can't find the correct model to put into: options snd-hda-intel model= The file HD-Audio-Models.txt doesn't contain the model for ALC668. Some info: :~sudo aplay -l **** List of PLAYBACK Hardware Devices **** card 0: MID [HDA Intel MID], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: MID [HDA Intel MID], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: MID [HDA Intel MID], device 8: HDMI 2 [HDMI 2] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: PCH [HDA Intel PCH], device 0: ALC668 Analog [ALC668 Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 :~$ sudo lspci -v | grep -A7 -i "audio" 00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06) Subsystem: Intel Corporation Device 2010 Flags: bus master, fast devsel, latency 0, IRQ 52 Memory at f7a14000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Kernel driver in use: snd_hda_intel -- 00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 04) Subsystem: ASUSTeK Computer Inc. Device 11cd Flags: bus master, fast devsel, latency 0, IRQ 53 Memory at f7a10000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [100] Virtual Channel PS info :~$ amixer -c 0 Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] Simple mixer control 'IEC958',1 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] Simple mixer control 'IEC958',2 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] :~$ pacmd dump-volumes Welcome to PulseAudio! Use "help" for usage information. Sink 0: reference = 0: 76% 1: 76%, real = 0: 76% 1: 76%, soft = 0: 100% 1: 100%, current_hw = 0: 76% 1: 76%, save = yes Input 8: volume = 0: 100% 1: 100%, reference_ratio = 0: 100% 1: 100%, real_ratio = 0: 100% 1: 100%, soft = 0: 100% 1: 100%, volume_factor = 0: 100% 1: 100%, volume_factor_sink = 0: 100% 1: 100%, save = no Source 0: reference = 0: 100% 1: 100%, real = 0: 100% 1: 100%, soft = 0: 100% 1: 100%, current_hw = 0: 100% 1: 100%, save = no Source 1: reference = 0: 16% 1: 16%, real = 0: 16% 1: 16%, soft = 0: 100% 1: 100%, current_hw = 0: 16% 1: 16%, save = yes

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  • CVE-2006-4514 Buffer overflow vulnerability in Gnome Structured File library (libgsf)

    - by RitwikGhoshal
    CVE DescriptionCVSSv2 Base ScoreComponentProduct and Resolution CVE-2006-4514 Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability 7.5 Gnome Structured File library (libgsf) Solaris 10 SPARC: 149108-01 X86: 149109-01 This notification describes vulnerabilities fixed in third-party components that are included in Oracle's product distributions.Information about vulnerabilities affecting Oracle products can be found on Oracle Critical Patch Updates and Security Alerts page.

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  • Wireless not working on Dell Inspirion 1501 after upgrading to Ubuntu 12.04 tried steps in other threads

    - by mark burton
    I updated to Ubuntu 12.04 and now my wireless is not working. No icon for it. Tried some of the troubleshooting in other threads but can't get it to work. Would really appreciate any help Thanks! " *-network description: Network controller product: BCM4311 802.11a/b/g vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:05:00.0 version: 01 width: 32 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: driver=b43-pci-bridge latency=0 resources: irq:18 memory:c0200000-c0203fff *-network description: Ethernet interface product: BCM4401-B0 100Base-TX vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:08:00.0 logical name: eth0 version: 02 serial: 00:19:b9:5c:d1:52 size: 100Mbit/s capacity: 100Mbit/s width: 32 bits clock: 33MHz capabilities: pm bus_master cap_list ethernet physical mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=b44 driverversion=2.0 duplex=full ip=10.0.0.6 latency=64 link=yes multicast=yes port=twisted pair speed=100Mbit/s resources: irq:21 memory:c0300000-c0301fff " lsub results Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 002: ID 046d:c526 Logitech, Inc. Nano Receiver $ lspci 00:00.0 Host bridge: Advanced Micro Devices [AMD] nee ATI RS480 Host Bridge (rev 10) 00:01.0 PCI bridge: Advanced Micro Devices [AMD] nee ATI RS480 PCI Bridge 00:05.0 PCI bridge: Advanced Micro Devices [AMD] nee ATI RS480 PCI Bridge 00:06.0 PCI bridge: Advanced Micro Devices [AMD] nee ATI RS480 PCI Bridge 00:12.0 SATA controller: Advanced Micro Devices [AMD] nee ATI SB600 Non-Raid-5 SATA 00:13.0 USB controller: Advanced Micro Devices [AMD] nee ATI SB600 USB (OHCI0) 00:13.1 USB controller: Advanced Micro Devices [AMD] nee ATI SB600 USB (OHCI1) 00:13.2 USB controller: Advanced Micro Devices [AMD] nee ATI SB600 USB (OHCI2) 00:13.3 USB controller: Advanced Micro Devices [AMD] nee ATI SB600 USB (OHCI3) 00:13.4 USB controller: Advanced Micro Devices [AMD] nee ATI SB600 USB (OHCI4) 00:13.5 USB controller: Advanced Micro Devices [AMD] nee ATI SB600 USB Controller (EHCI) 00:14.0 SMBus: Advanced Micro Devices [AMD] nee ATI SBx00 SMBus Controller (rev 13) 00:14.1 IDE interface: Advanced Micro Devices [AMD] nee ATI SB600 IDE 00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA) 00:14.3 ISA bridge: Advanced Micro Devices [AMD] nee ATI SB600 PCI to LPC Bridge 00:14.4 PCI bridge: Advanced Micro Devices [AMD] nee ATI SBx00 PCI to PCI Bridge 00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration 00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map 00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller 00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control 01:05.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RS482 [Radeon Xpress 200M] 05:00.0 Network controller: Broadcom Corporation BCM4311 802.11a/b/g (rev 01) 08:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02) 08:01.0 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 19) 08:01.1 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 01) rfkill list all 0: dell-wifi: Wireless LAN Soft blocked: no Hard blocked: no

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  • If Computer Problems were Physical Life Events [Video]

    - by Asian Angel
    Things can be bad (and frustrating) enough when you have problems with your computer, but what if those events actually crossed over into physical reality? Note: Video contains some language that may be considered inappropriate. If Computer Problems Were Real – Awkward Spaceship [via Fail Desk] How To Properly Scan a Photograph (And Get An Even Better Image) The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage

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  • SQL SERVER Configure Management Data Collection in Quick Steps T-SQL Tuesday #005

    This article was written as a response to T-SQL Tuesday #005 Reporting.The three most important components of any computer and server are the CPU, Memory, and Hard disk specification. This post talks about how to get more details about these three most important components using the Management Data Collection. Management Data Collection generates the [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • How to recognize an optimus laptop?

    - by kellogs
    kellogs@kellogs-K52Jc ~ $ lspci 00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 18) 00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 18) 00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06) 00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06) 00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06) 00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 06) 00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 06) 00:1c.5 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 6 (rev 06) 00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a6) 00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 06) 00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 4 port SATA AHCI Controller (rev 06) 00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 06) 02:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01) 03:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller (rev 80) 03:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller (rev 80) 03:00.3 System peripheral: JMicron Technology Corp. MS Host Controller (rev 80) 03:00.4 System peripheral: JMicron Technology Corp. xD Host Controller (rev 80) 03:00.5 Ethernet controller: JMicron Technology Corp. JMC250 PCI Express Gigabit Ethernet Controller (rev 03) ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 05) ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 05) ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 05) ff:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 05) ff:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 05) ff:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 05) kellogs@kellogs-K52Jc ~ $ inxi -SGx System: Host: kellogs-K52Jc Kernel: 3.5.0-17-generic x86_64 (64 bit, gcc: 4.7.2) Desktop: KDE 4.9.5 (Qt 4.8.3) Distro: Linux Mint 14 Nadia Graphics: Card: Intel Core Processor Integrated Graphics Controller bus-ID: 00:02.0 X.Org: 1.13.0 drivers: intel (unloaded: fbdev,vesa) Resolution: [email protected] GLX Renderer: Mesa DRI Intel Ironlake Mobile GLX Version: 2.1 Mesa 9.0.3 Direct Rendering: Yes kellogs@kellogs-K52Jc ~ $ lshw [...] *-display description: VGA compatible controller product: Core Processor Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 18 width: 64 bits clock: 33MHz capabilities: vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:44 memory:d0000000-d03fffff memory:c0000000-cfffffff ioport:e080(size=8) Manufacturer advertises the K52Jc model which I bought as optimus enabled. However, no traces of it in the output above. Of course, Bumblebee would not start on this machine. Should I rest assured that is a defective / un-optimused machine ?

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  • From the Tips Box: Telescope Laser Sights, Drobox Desktops, and Kindle Clipping Conversions

    - by Jason Fitzpatrick
    Once a week we round up some great reader tips and share them with everyone; this week we’re looking at telescope laser sights, syncing your desktop with Dropbox, and converting your Kindle Clippings file. How To Properly Scan a Photograph (And Get An Even Better Image) The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage

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  • Protection against CheatEngine and other injectors [duplicate]

    - by Lucas
    This question already has an answer here: Strategies to Defeat Memory Editors for Cheating - Desktop Games 10 answers Is protection against CheatEngine and other inject tools are possible to do? I was thinking a day and the only one idea I've got is about writting some small application which will scan the processes running every second, and in case if any injector will be found the game client will exit immadiately. I'm writing here to see your opinions on this case as some of you may have some expierence against protecting the game clients against DLL or PYC injection or something.

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  • Looking to trade a 1U HP Proliant DL360 G5 in exchange for a small linux VPS

    - by user597875
    I have a 1U HP Proliant DL360 G5 that I have no place to rack and would like to trade it for a small linux VPS. If interested let me know... Here are the specs of the server: Model: Intel Xeon CPU 5150 @ 2.66GHz, 4MB L2 Cache Processor Speed: 2.7GHz Processor Sockets: 2 Processor Cores per Socket: 2 Logical Processors: 4 8GB of memory 4x72GB 10k SAS drives Manufacturer: HP Model: Proliant DL360 G5 BIOS Version: P58

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  • Packard Bell TK11 Wifi not working (Ubuntu 12.10)

    - by Ingmar
    Hardware: Packard Bell EasyNote TK11BZ, BIOS version 1.15 Broadcom BCM43227 802.11 b/n/g Problem: Everything works as it should, except the wireless connection. The Wifi device is enabled in the "Additional Drivers" section of Software Sources, but does not even show up in the network manager drop-down. sudo lshw -C network: *-network UNCLAIMED description: Network controller product: BCM43227 802.11b/g/n vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:07:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: latency=0 resources: memory:f0100000-f0103fff

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  • SQL Server 2014 – delayed transaction durability

    - by Michael Zilberstein
    As I’m downloading SQL Server 2014 CTP2 at this very moment, I’ve noticed new fascinating feature that hadn’t been announced in CTP1 : delayed transaction durability . It means that if your system is heavy on writes and on another hand you can tolerate data loss on some rare occasions – you can consider declaring transaction as DELAYED_DURABILITY = ON . In this case transaction would be committed when log is written to some buffer in memory – not to disk as usual. This way transactions can become...(read more)

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  • Do you test your SQL/HQL/Criteria ?

    - by 0101
    Do you test your SQL or SQL generated by your database framework? There are frameworks like DbUnit that allow you to create real in-memory database and execute real SQL. But its very hard to use(not developer-friendly so to speak), because you need to first prepare test data(and it should not be shared between tests). P.S. I don't mean mocking database or framework's database methods, but tests that make you 99% sure that your SQL is working even after some hardcore refactoring.

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  • Strategy for clients to retrieve real-time log from HTTP server

    - by Jerry Dodge
    I have an HTTP Server Service application which has its own logging mechanism. It's written in Delphi. I would like to provide a way for multiple clients to connect to this service and get a real-time update of the log. The log in the service moves rather fast, there's a lot of things to log. There may be up to 50 messages within 1 second at times. The existing log which is already implemented is not saved, it's only kept in the memory of the server service - where I will need to distribute it to any client which needs it. Once all clients have a log message, it should be deleted. I intend to use HTTP to "ask" the server for the log, and respond with an XML packet. The connections are not keep-alive. The only problem is, the server should only send the client those log records which it needs, not everything. I have no way of the server pushing the log to the clients in real-time, so each client needs to repeatedly ask the server for the latest log records. This HTTP Server is very lightweight, and there is no session management. There isn't even any type of authentication. The only way I see is for a client to register its self on the server, and whenever a log is issued on the server, it creates a copy of the log for each client, where each client has a log queue (string list). However, suppose there are 100 clients connected and expecting to receive this log. That means the server must create 100 copies of each log, add this log to the end of each client log queue, and wait for the client to request it. At that point, when the server replies with the XML log, it should flush (delete) whatever's in the queue. I'm worried however that this could cause memory issues. Each client log queue might get 100 log messages before the client requests the latest logs. How should I go about doing this in the fastest way possible without hindering the performance of the server? I'm trying to avoid having to create a copy of each log for each client.

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  • What precautions should I take when moving a hard drive from one computer to another?

    - by Colin Dean
    I'm planning to move a hard drive from one server machine to another. The hard drive is an IDE drive. The motherboards are different, as are the memory and such. In this instance, graphics isn't a problem because this is just Ubuntu Server. Are there any precautions I should take, or steps I can do beforehand, in order to make this go as smoothly as possible? I've of course already backed up /home directories and configurations in /etc and /var.

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  • Booting From USB Problem

    - by Rob Barker
    I'm trying to boot Ubuntu 10.12 from a usb memory stick in a first time installation, but i keep getting a message preventing me from progressing any further. It says this. SYSLINUX 4.06 EDD 4.06-pre1 Copyright (c) 1994-2012 H.Peter I've reordered my bios boot priorities correctly so the usb loads before the hard drive. My hard drive is faulty, but i am getting a new one tomorrow. Any ideas? Help would be much appreciated.

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