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  • Core 2 Duo Processor E8400 with LGA 755 socket?

    - by Someone
    The motherboard on my PC (Dell XPS 410) has socket LGA 755 and according to the box on this processor I have, says it requires a motherboard with socket LGA 775. Will this processor work on the 755 motherboard? Edit: After reading further result online, I think I may have been fed some mis-information. According to this thread the XPS comes with socket LGA 755 but on other sites it says that it comes with LGA 775...

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  • Windows CHKDSK starts when 6 seconds have passed

    - by Whirlwin
    After reading this thread I might have sorted out why the CHKDSK-prompt starts. But the biggest problem is that when it prompts me with Press any key with in 10..0 seconds, nothing happens until the timer hits 6, then it starts the check even though I've pressed any button (and yet it's 4 seconds left). This question states the problem as it appears at me, though the answer is wrong. Why does the actual check start after 6 seconds, and is there any way to disable it from within Windows?

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  • How does badBIOS jumps airgaps?

    - by Ash
    I was reading this article from Ars on badBIOS and came across this line which states the malware, has the ability to use high-frequency transmissions passed between computer speakers and microphones to bridge airgaps. and wondered if this attack vector was possible ? Not only me , but all other readers were wondering if this had any logical explanation.Can a computer transmit packets via high-frequency sounds broadcast over speakers ?

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  • How can I set my TP-Link TL-WR1043ND to extend my router - modem range?

    - by Pitto
    I'd like to extend my WiFi coverage, so I've bought the TP-Link TL-WR1043ND and updated its firmware to the latest (wr1043nv1_en_3_13_4_up(110429)) but I can't find how to use its WDS function. Reading further on Super User I understand that both the modem-router (Pirelli Alice Gate) and the TL-WR1043ND should support WDS. Are there any tricks to achieve the same result - extending my WiFi range - even changing the firmware to DD-WRT or Tomato etc?

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  • Weird nfs performance: 1 thread better than 8, 8 better than 2!

    - by Joe
    I'm trying to determine the cause of poor nfs performance between two Xen Virtual Machines (client & server) running on the same host. Specifically, the speed at which I can sequentially read a 1GB file on the client is much lower than what would be expected based on the measured network connection speed between the two VMs and the measured speed of reading the file directly on the server. The VMs are running Ubuntu 9.04 and the server is using the nfs-kernel-server package. According to various NFS tuning resources, changing the number of nfsd threads (in my case kernel threads) can affect performance. Usually this advice is framed in terms of increasing the number from the default of 8 on heavily-used servers. What I find in my current configuration: RPCNFSDCOUNT=8: (default): 13.5-30 seconds to cat a 1GB file on the client so 35-80MB/sec RPCNFSDCOUNT=16: 18s to cat the file 60MB/s RPCNFSDCOUNT=1: 8-9 seconds to cat the file (!!?!) 125MB/s RPCNFSDCOUNT=2: 87s to cat the file 12MB/s I should mention that the file I'm exporting is on a RevoDrive SSD mounted on the server using Xen's PCI-passthrough; on the server I can cat the file in under seconds ( 250MB/s). I am dropping caches on the client before each test. I don't really want to leave the server configured with just one thread as I'm guessing that won't work so well when there are multiple clients, but I might be misunderstanding how that works. I have repeated the tests a few times (changing the server config in between) and the results are fairly consistent. So my question is: why is the best performance with 1 thread? A few other things I have tried changing, to little or no effect: increasing the values of /proc/sys/net/ipv4/ipfrag_low_thresh and /proc/sys/net/ipv4/ipfrag_high_thresh to 512K, 1M from the default 192K,256K increasing the value of /proc/sys/net/core/rmem_default and /proc/sys/net/core/rmem_max to 1M from the default of 128K mounting with client options rsize=32768, wsize=32768 From the output of sar -d I understand that the actual read sizes going to the underlying device are rather small (<100 bytes) but this doesn't cause a problem when reading the file locally on the client. The RevoDrive actually exposes two "SATA" devices /dev/sda and /dev/sdb, then dmraid picks up a fakeRAID-0 striped across them which I have mounted to /mnt/ssd and then bind-mounted to /export/ssd. I've done local tests on my file using both locations and see the good performance mentioned above. If answers/comments ask for more details I will add them.

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  • How can I configure GIMP 2.8 to be a single window in XMonad?

    - by Pubby
    I'm trying to get GIMP to display as a single window in XMonad. Currently, it's floating strangely in front of every other display and I can't use it. I have tried reading this: http://www.haskell.org/haskellwiki/Xmonad/General_xmonad.hs_config_tips#Gimp But it seems this is for versions of GIMP before 2.8 when there wasn't the option to have GIMP use only 1 window. Because of this, it's an XMonad problem, not a GIMP one. How can I do this?

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  • Postgresql Internals - Documentation

    - by NogginTheNog
    I'm looking for some up-to-date information about postgresql internals, specifically the query optimizer. I've found this link (referred to in the "Further Reading" section of the 8.4 docs):- http://db.cs.berkeley.edu//papers/UCB-MS-zfong.pdf but it seems quite old. That in itself is not a problem, but I wanted to be sure that I have information that is relevant. Is this the best resource for understanding how postgresql processes queries (using plans, statistics etc.) or are there others?

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  • Can capistrano or fabric be used to setup a server from scratch?

    - by Blankman
    I'm hoping there is a light weight, command line utility that I could use to setup a server from scratch. I like python's fabric or ruby's capistrano but from what I was reading they are more used for deployment purposes and not setting up apache, mysql, update patches etc. I know there are other tools like puppet, but I don't want to setup a master/slave for servers etc., I was hoping there was a more light-weight tool for this.

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  • Does ZFS replace the need for hardware/software RAID?

    - by user53744
    I want to provide protection against data loss on my servers. Typically, I'd use hardware RAID 1 or 5, but I've been reading up on ZFS. Is it correct that ZFS itself provides RAID 1 or 5 like data protection WITHOUT needing a RAID controller card? If so, I assume a single hard drive is not enough to provide data protection since if that drive fails, all data fails, so how many hard drives do I need to be running for ZFS to provide this protection?

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  • How Do I Fix a mysql "system error: 111" in a hosting service?

    - by Ygam
    Got this error Lost connection to MySQL server at 'reading initial communication packet', system error: 111 I am currently hosting a site under a subdomain here is a page accessing the database : http://payment.ygamtester.co.cc/search/index.html I have seen a lot of posts about this all pointing to one solution use ssh to alter a file in the mysql server obviously you can't do that with a remotely hosted site under a hosting company

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  • What are your best senior level Linux interview questions

    - by Mike
    Every now and then on this site there are people asking what are some sys admin interview questions. Mostly when reading them they are all junior to mid-level questions. I'm wondering what are your best senior level Linux admin interview questions. Two of mine are 1) How do you stop a fork bomb if you are already logged into a system 2) You delete a log file that apache is using and did not restart apache yet, how can you recover that log file?

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  • GPU Temperature comparisons between similar GPUs of the same line

    - by White Phoenix
    As a general rule of thumb, if there are two similar GPUs from the same line (i.e. an NVIDIA GTX 260 vs a NVIDIA GTX 280), will the less powerful or more powerful GPU run hotter? This is assuming all other factors stay the same - hardware configuration, cooling setup, ingame settings, etc. Or does this depend entirely upon the GPU itself? I do remember reading that the GTX 280 in this example was terribly inefficient with power and cooling.

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  • Scrolling content in a kindle book

    - by Dave
    I'm wondering if anyone is aware of a way to scroll content in a kindle book. I thought I had the problem solved by using calibre but I quickly discovered that since the content is DRMed, I'm not allowed to read the book with this reader. lame The specific book I'm reading has code examples in it, but it is difficult to follow them without being able to specifically scroll through the examples. This doesn't even touch on the fact that the code content is also poorly formatted.

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  • Exchange 2007 Receive E-Mail for other Domains

    - by Loop
    My organisation has Exchange 2007 e-mail server, and now, we want to host e-mail service for other organisation (neworg.com) I added new Authoritative Active Domain neworg.com, but when adding a new mailbox, there is no option to chose new SMTP domain name neworg.com, and I can't add new user with SMTP domain [email protected]. Probably I misunderstood something while reading posts on Internet, but can someone help please?

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  • Synergy config being shared across computers

    - by deworde
    For some reason, I'm unable to change where my synergy 1.3.1 profile data is being stored, with the result that when I start up, both computers end up reading it from the same shared file. Effectively this means that I'm ending up with both computers acting as clients or servers and both with the same name, until I change their profiles manually. Any advice? Thanks.

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  • What is the correct way to distinguish services to which RADIUS request belongs?

    - by John
    If I have 1 generic RADIUS server and a number of clients (VoIP server, VPN server, WIFI access point) how to distinguish senders (NAS) of access and accounting requests? I didn't found anything helpful by reading all related RFCs, there just NAS-IP-Addess or NAS-Identifier is required, but this attributes usually represents IP address of the NAS and this address can not be used as a robust identifier, because it's often possible to fall into the case when 2 different NASes are running on the same server and this attributes can not be customized. Any ideas?

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  • Server Vs Service / Physical Vs Virtual

    - by user559142
    When reading definitions for a server service (e.g. iis) you will often find that there are several cross references to a virtual server but none seem to definitively refer to the two as the same..... Can somebody help me to understand the differences - I cannot get my head around what the difference between each is? Ideally I would like to know the differences between the following/or indeed if any refer to the same... 1) Logical Server 2) Virtual Host 3) Logical Partition 4) Physical Server Vs Virtual Server 5) Server Service Vs Virtual Host

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  • Trunking at Router Port

    - by singh
    After reading a bit about interVLAN routing got a doubt regarding how trunking takes place at router and at switch.In case of switch we configure a port interface as trunk port and say all vlan's are allowed here but in case of router we configure sub interface as trunk saying particular vlan belongs to particular subinterface .Can't we configure only a single port interface on router just like Switch and say all vlan's are allowed here on this interface ,why to go for sub interfaces? Hope I'm able to put my question in right way.

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  • Streaming a large file

    - by Rich
    quick question say i wanted to download a file of considerable size 10gb say and i sent the GET request to a web server to download that file question is, if the client stopped reading the TCP connection, would the entire file still be downloaded, or does it depend on the client sending back an ack or something to the circuit asking for the next packet hope that makes sense This question was originally asked involving the Tor network, but i just want to know how a standard internet connection would handle this Thanks

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  • Cisco Unifies Communications Manager 7.0 - Installing Extension Mobility

    - by Lance
    I've setup extension mobility to the best of my ability, however, it its perplexing me... From the materials I've been reading I have established I need to have the following URL in place: http://IP/emapp/EmAppServlet?device=#DEVICENAME# If I try and browse to this in a web browser I can a blankHTML page. When my registered phone (CIPC) presses Services - Extension Mobility, it just sits there / delivers a blank page. I figure this isn't coincidence... Any ideas?

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  • About memory cache of Linux

    - by cheneydeng
    I'm running a python script to do some statistics and the actually memory which used is low,about 10%.And no other process cost more memory.However,when i use free -m and it shows that almost 95% memory has been used.The point is that my script should do a lot of read from files,so i wonder if there's any mechanism of Linux memory cache that caused the problem?echo 1 >> /proc/sys/vm/drop_caches works,but it seems manually.How can i reduce the memory cost and doesn't make a bad effect on reading files?

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