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  • Windows 7 Slowness following Virtual PC and Visual Studio Install

    - by Elliot Hughes
    I'm running Windows 7 32bit on a 3.2ghz Pentium D with 2gb RAM and a 1TB SATA hard drive. My system was running as fast as it ever has until I installed Visual Studio and Virtual PC a few days ago. Ever since - regardless of whether either application has been running the system has been running incredibly slowly. For example flash video plays jumpily, 3D games that used to run fine are now unplayable and even the smallest amount of multitasking makes the system unusable. I'm confident there is no virus or other such things present following scans in safemode and I'm fairly confident I've made no other changes to my system. Any ideas - I've run out of things to try!

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  • Lot of FIN_WAIT2, CLOSE_WAIT , LAST_ACK and TIME_WAIT in Haproxy

    - by Tux
    We are running haproxy in production for around 10k+ concurrent users . But we are seeing lot of FIN_WAIT2, CLOSE_WAIT , LAST_ACK and TIME_WAIT in the netstat output. This output is on a 8G ubuntu-12.04 node. 8046 CLOSE_WAIT 1 CLOSING 1 established) 40869 ESTABLISHED 1212 FIN_WAIT1 7575 FIN_WAIT2 1 Foreign 2252 LAST_ACK 7 LISTEN 143 SYN_RECV 4920 TIME_WAIT Can someone please tell me what tweaking i need to do. Please note that all these connections are persistent connections . tcp_fin_timeout = 30 tcp_keepalive_time = 1800 Right now, the application is working fine. But wondering will be there any issues as we add more users to this haproxy node.

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  • amazon ec2 pricing

    - by Pradyut Bhattacharya
    I m really confused. I was trying to buy hosting at amazon ec2. My site will not be having much of a traffic and i will be installing glassfish and mysql. Usage will be 1gb of ram and around less than 5gb of hardisk and same bandwidth. As mine is a startup, the number of hits per day would be less than 20hits per day, each hit having around 10mins time. How should i calculate the price on the ec2 calculator. Thanks

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  • What things should I run daily, weekly, monthly on my Windows machine?

    - by Jitendra vyas
    What things should I run daily, weekly, monthly on my Windows XP machine? De fragmentation Scan-disk Full system scan Disk clean up Trojan checker malware remover or any other thing... And should I run all these things in Safe-mode always? I want to perform all mentioned things automatically at night. How to set schedule and What would be the best plan? For daily weekly and monthly? I've 300 GB SATA HDD with 6 partition. I would like to know in above mentioned list: Which process should I run daily? Which process should I run weekly? Which process should I run on monthly basis How to set schedule for all in Windows task scheduler?

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  • TechEd 2010 Thanks and Demos

    - by Adam Machanic
    Thank you to everyone who attended my three sessions at this year's TechEd show in New Orleans. I had a great time presenting and answering the really great questions posed by attendees. My sessions were: DAT317 T-SQL Power! The OVER Clause: Your Key to No-Sweat Problem Solving Have you ever stared at a convoluted requirement, unsure of where to begin and how to get there with T-SQL? Have you ever spent three days working on a long and complex query, wondering if there might be a better way? Good...(read more)

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  • Renault under threat from industrial espionage, intellectual property the target

    - by Simon Thorpe
    Last year we saw news of both General Motors and Ford losing a significant amount of valuable information to competitors overseas. Within weeks of the turn of 2011 we see the European car manufacturer, Renault, also suffering. In a recent news report, French Industry Minister Eric Besson warned the country was facing "economic war" and referenced a serious case of espionage which concerns information pertaining to the development of electric cars. Renault senior vice president Christian Husson told the AFP news agency that the people concerned were in a "particularly strategic position" in the company. An investigation had uncovered a "body of evidence which shows that the actions of these three colleagues were contrary to the ethics of Renault and knowingly and deliberately placed at risk the company's assets", Mr Husson said. A source told Reuters on Wednesday the company is worried its flagship electric vehicle program, in which Renault with its partner Nissan is investing 4 billion euros ($5.3 billion), might be threatened. This casts a shadow over the estimated losses of Ford ($50 million) and General Motors ($40 million). One executive in the corporate intelligence-gathering industry, who spoke on condition of anonymity, said: "It's really difficult to say it's a case of corporate espionage ... It can be carelessness." He cited a hypothetical example of an enthusiastic employee giving away too much information about his job on an online forum. While information has always been passed and leaked, inadvertently or on purpose, the rise of the Internet and social media means corporate spies or careless employees are now more likely to be found out, he added. We are seeing more and more examples of where companies like these need to invest in technologies such as Oracle IRM to ensure such important information can be kept under control. It isn't just the recent release of information into the public domain via the Wikileaks website that is of concern, but also the increasing threats of industrial espionage in cases such as these. Information rights management doesn't totally remove the threat, but abilities to control documents no matter where they exist certainly increases the capabilities significantly. Every single time someone opens a sealed document the IRM system audits the activity. This makes identifying a potential source for a leak much easier when you have an absolute record of every person who's had access to the documents. Oracle IRM can also help with accidental or careless loss. Often people use very sensitive information all the time and forget the importance of handling it correctly. With the ability to protect the information from screen shots and prevent people copy and pasting document information into social networks and other, unsecured documents, Oracle IRM brings a totally new level of information security that would have a significant impact on reducing the risk these organizations face of losing their most valuable information.

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  • Cleaning up temp files in OSX

    - by deddebme
    I was a Windows person for more than 10 years. Around 4 months ago, I switched to Mac, and I have never looked back. But there is one thing that bothers me, which is my Mac partition volume is losing space slowly and gradually. I am pretty sure there are a lot of orphaned temporary files laying around in the volume. I know where to find the obsoleted temp files in my Windows partition, how about in Mac OSX?

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  • PostgreSQL lots of large Arrays and Writes

    - by strife911
    Hi, I am running a python program that spawns 8 threads and as each thread launch its own postmaster process via psycopg2. This is to maximize the use of my CPU-cores (8). Each thread call a series of SQL Functions. Most of these functions go through many thousands of rows each associated to a large FLOAT8[] Array (250-300) values by using unnest() and multiplying each FLOAT8 by an another FLOAT8 associated to each row. This Array approach minimized the size of the Indexes and the Tables. The Function ends with an Insert into another Table of a row of the same form (pk INT4, array FLOAT8[]). Some SQL Functions called by python will Update a row of these kind of Tables (with large Arrays). Now I currently have configured PostgreSQL to use most of the memory for cache (effective_cache_size of 57 GB I think) and only a small amount of it for shared memory (1GB I think). First, I was wondering what the difference between Cache and Shared memory was in regards to PostgreSQL (and my application). What I have noticed is that only about 20-40% of my total CPU processing power is used during the most Read intensive parts of the application (Select unnest(array) etc). So secondly, I was wondering what I could do to improve this so that 100% of the CPU is used. Based on my observations, it does not seem to have anything to do with python or its GIL. Thanks

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  • How to Recover HDD Formatted by "Create a Recovery Drive" Tool of Windows 8.1?

    - by ide
    I have 2 TB USB HDD which had these drives F: about 1 TB with 750 GB data H: about 120 GB with 60 GB data I: about 780 GB with 250 GB data (For TV: It was raw in Windows but visible in the Smart TV) I took 521 MB from last part of H to get new G drive. Then I run "Create a Recovery Drive" tool of Windows 8.1 and chose G drive. It said all data in the drive will be deleted. I thought it is just G drive but it deleted my whole HDD. It created 32 GB new F drive with writing 337 MB on it and rest of HDD is unallocated. I tried these programs to get my first 3 drives but non of them helped for getting 1st partition. TestDisk MiniTool Partition Wizard Home Edition EaseUS Partition Master 9.2.2 (I deleted new F drive volume because it scans only unallocated part) Recuva PC Inspector File Recovery

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  • Matrix Pattern Recognition Algorithm

    - by Andres
    I am designing a logic analyzer and I would like to implement some Matrix Algorithm. I have several channels each one represented by a row in the matrix and every element in the column would be the state, for example: Channel 1 1 0 0 1 0 1 1 0 1 Channel 2 1 1 0 1 1 0 0 1 1 Channel 3 0 1 0 1 1 0 1 0 0 Channel 4 0 0 1 0 0 1 0 0 1 I would like to detect a pattern inside my matrix for example, detect if exist and where the sub-matrix or pattern: 1 0 1 1 I think it can be accomplished testing element by element but I think there should be a better way of doing it. Is there any Java API or any way to do it ? If there is a API ARM optimized for NEON instructions would be great also but not mandatory. Thank you very much in advance.

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  • Restore data from overwritten LVM

    - by Matthias Bayer
    I lost all of my data (8 TB) which I collected over the past few years yesterday because I made some seriuos mistakes during the remounting of my LVM. I run a XenServer5.6 installation with additional 4 harddisks for data storage. An LVM over those 4 HDDs was used to store all of my data. Yesterday, I reinstalled XenServer and wanted to mount my old Harddrives and add the LVM. I run xe sr-create [...] for all disks (/dev/sdb .. /dev/sde), but that was totally wrong. This command deletes the old LVM on the disks and created an new, empty lvm on every single disk with no partitions. No i got 4 empty harddrives :( Is it possible to recover some data from that lost LVM volumes? I have no clue how to do it because i deleted all informations about the old LVM. Is there a way to access the files insed that old lvm directly?

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  • please explain my fio results - is O_SYNC|O_DIRECT misbehaving on linux?

    - by Zoltan
    I'm going mad over figuring out what the problem could be with one of our storage boxes. With a simple fio script I'm testing random writes using bs=1M and direct=1. The SSD is a Samsung 840pro attached to an LSI HBA (3Gbit/s ports). This is the result I'm getting under FreeBSD 9.1: WRITE: io=13169MB, aggrb=224743KB/s, minb=224743KB/s, maxb=224743KB/s, mint=60002msec, maxt=60002msec This is regardless of sync being set to 0 or 1. On linux, this is the result with sync=0: WRITE: io=14828MB, aggrb=253060KB/s, minb=253060KB/s, maxb=253060KB/s, mint=60001msec, maxt=60001msec and with sync=1: WRITE: io=6360.0MB, aggrb=108542KB/s, minb=108542KB/s, maxb=108542KB/s, mint=60001msec, maxt=60001msec My understanding is that since I'm operating on the raw block device, O_SYNC should not make any difference - there's no filesystem, any barrier, anything between the writes and the drive itself. Especially with O_DIRECT|O_SYNC set. Any ideas? For reference, here's the fio script I'm testing with: [global] bs=1M ioengine=sync iodepth=4 size=16g direct=1 runtime=60 filename=/dev/sdh sync=1 [rand-write] rw=randwrite stonewall

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  • 12 és fél éve történt: Data Mart Suite és Discoverer/2000

    - by Fekete Zoltán
    Néhány hónapon belül az Oracle Hungary Kft. új irodaházba költözik. Érdemes tehát "inkrementálisan" selejtezni, ahogyan egy jó adattárházba is lépésenként kerülnek be az adatok, és témakörönként kisebb kilométerkövek mentén no a lefedett területek garmadája. :) Az imént akadt a kezembe egy jelentkezési lap az Oracle döntéstámogatás (DSS) témakörbol 1997-bol: Új döntésté(!)mogató eszközök a fejlesztok kezében, Oracle Partneri konferencia, 1997. november 7. :) Oldtimer... És mindez véletlenöl pontosan a NOSZF dátumára idozítve. Együtt ünnepelt a világ! Emlékszik még valaki, mi is a NOSZF feloldása? :) Azóta az Oracle Warehouse Builder és az Oracle Business Intelligence Enterprise Edition és a BI Standard Edition One lettek a zászlóshajók az ETL-ELT és az elemzés-kimutatáskészítés területen.

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  • Survey: How much data do you work with?

    - by James Luetkehoelter
    Andy isn't the only one that can ask a survey question. This is something I really curious about because many of the answers or recommendations or rants in blogs are not universably applicable to every database - small databases must sometimes be treated differently, and uber databases are just a pain (and fun at the same time). So, how would you classify most of the databases you work with: 1) Up to 50GB 2) 50-500GB 3) 500GB - 2TB 4) DEAR GOD THAT"S TOO MUCH INFORMATION! Share this post: email it!...(read more)

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  • Better way to design a database

    - by cMinor
    I have a conceptual problem and I would like to get your ideas on how I'll be able to do what I am aiming. My goal is to create a database with information of persons who work at a place depending on their profession and skills,and keep control of salary and projects (how much would cost summing all the hours of work) I have 3 categories which can have subcategories: Outsourcing Technician welder turner assistant Administrative supervisor manager So each person has its information and the projects they are working on, also one person may do several jobs... I was thinking about having 5 tables (EMPLOYEE, SKILLS, PROYECTS, SALARY, PROFESSION) but I guess there is a better way of doing this. create table Employee ( PRIMARY KEY [Person_ID] int(10), [Name] varchar(30), [sex] varchar(10), [address] varchar(10), [profession] varchar(10), [Skills_ID] int(10), [Proyect_ID] int(10), [Salary_ID] int(10), [Salary] float ) create table Skills ( PRIMARY KEY [Skills_ID] int(10), FOREIGN KEY [Skills_name] varchar(10) REFERENCES Employee(Person_ID), [Skills_pay] float(10), [Comments] varchar(50) ) create table Proyects ( PRIMARY KEY [Proyect_ID] int(10), FOREIGN KEY [Skills_name] varchar(10) REFERENCES Employee(Person_ID) [Proyect_name] varchar(10), [working_Hours] float(10), [Comments] varchar(50) ) create table Salary ( PRIMARY KEY [Salary_ID] int(10), FOREIGN KEY [Skills_name] varchar(10) REFERENCES Employee(Person_ID) [Proyect_name] varchar(10), [working_Hours] float(10), [Comments] varchar(50) ) So to get the total amount of the cost of a project I would just sum the working hours of each employee envolved and sum some extra costs in an aggregate query. Is there a way to do this in a more efficient way? What to add or delete of this small model? I guess I am missing something in the salary - maybe I need another table for that?

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  • silent failure while creating odbc data source

    - by Peter
    I just got really confused trying to create an ODBC data source in Windows 2003 R2. I can create a connection to my chosen server (a MS SQL Server) on the "user DSN" tab, but when I try to do the same thing on the "system DSN tab", the process fails but without an error message. I am able to connect to the target database fine at the end of configuring a new data source, but when I click OK, the data source just isn't there. No error message, no sign that anything went amiss, other than the lack of a new data source. Very annoying, as I had to repeat the process a few times to make sure I wasn't crazy. Anybody got any hints? I suspect it is a permission problem of some sort but since there is no error message, I don't know where to start.

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  • Bridged NIC's but only one active

    - by rockinthesixstring
    I've "Bridged" the NIC's in my Server 2003 box but when I do a large file transfer, I see that only one is active at a time. What do I need to do to spread the love across both NIC's? I'm hoping to increase transfer speeds from my Server to my network. PS: I have a D-Link DGS-1016D Switch.

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  • Partial-stroking / Short-stroking / Half-stroking Hard Drives?

    - by Daniel Magliola
    Could anyone here explain to me what is implied by this term? (I've seen the same thing mentioned with the 3 terms). At first when I read about it, for some reason I understood that it was some way of splitting the bytes across the platters of the disk, which sounded like a good idea and obviously doesn't make sense, because that wouldn't cut disk size in half (and disk are probably already splitting bytes across platters)... The best I've come to understand is that basically instead of creating one partition for the whole size of the disk, you create 2 partitions, and use only one of them, either the one in the "center" or the one in the "rim" of the platters, and since one of the two is faster (people didn't seem to agree on which one was faster), that makes everything better. Am I understanding this correctly? Has anyone tried this with their drives and had a good outcome? Thanks!

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  • Hiding a file or data from being accessed unless on scheduled days [closed]

    - by gkt.pro
    Possible Duplicate: restricting access to volumes disk even for admin account windows How to restrict use of a computer? I want to limit my access to some data and what I want is that I should be able to access the data only on certain days of the month (e.g., every 3rd day). Is there any way like encryption or some utility to allow me to only access data on specific days? One idea that I was thinking of was to encrypt the data and store the password (will be complex and long so that I couldn't remember it right away) on some website which would then email me back the password in future on those specific days.

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  • Graph Isomorphism > What kind of Graph is this?

    - by oodavid
    Essentially, this is a variation of Comparing Two Tree Structures, however I do not have "trees", but rather another type of graph. I need to know what kind of Graph I have in order to figure out if there's a Graph Isomorphism Special Case... As you can see, they are: Not Directed Not A Tree Cyclic Max 4 connections But I still don't know the correct terminology, nor the which Isomorphism algorithm to pursue, guidance appreciated.

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  • Slow INFORMATION_SCHEMA query

    - by Thomas
    We have a .NET Windows application that runs the following query on login to get some information about the database: SELECT t.TABLE_NAME, ISNULL(pk_ccu.COLUMN_NAME,'') PK, ISNULL(fk_ccu.COLUMN_NAME,'') FK FROM INFORMATION_SCHEMA.TABLES t LEFT JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS pk_tc ON pk_tc.TABLE_NAME = t.TABLE_NAME AND pk_tc.CONSTRAINT_TYPE = 'PRIMARY KEY' LEFT JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE pk_ccu ON pk_ccu.CONSTRAINT_NAME = pk_tc.CONSTRAINT_NAME LEFT JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS fk_tc ON fk_tc.TABLE_NAME = t.TABLE_NAME AND fk_tc.CONSTRAINT_TYPE = 'FOREIGN KEY' LEFT JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE fk_ccu ON fk_ccu.CONSTRAINT_NAME = fk_tc.CONSTRAINT_NAME Usually this runs in a couple seconds, but on one server running SQL Server 2000, it is taking over four minutes to run. I ran it with the execution plan enabled, and the results are huge, but this part caught my eye (it won't let me post an image): http://img35.imageshack.us/i/plank.png/ I then updated the statistics on all of the tables that were mentioned in the execution plan: update statistics sysobjects update statistics syscolumns update statistics systypes update statistics master..spt_values update statistics sysreferences But that didn't help. The index tuning wizard doesn't help either, because it doesn't let me select system tables. There is nothing else running on this server, so nothing else could be slowing it down. What else can I do to diagnose or fix the problem on that server?

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  • Can we decrease page swapping?

    - by Benjamin
    My system has a 5GB RAM. And my paging file size is 2GB Even though I have many RAM, page-swapping still occurs. But I don't want to swapping. If I resize the paging file size(ex 200MB?), Doesn't Windows System do any swapping? Are there side-effects?

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