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  • Why does my motherboard go through an endless reboot cycle when 8 GB of memory is attempted vs 6 GB?

    - by nizm0
    I never got an answer in my googling to this about a year ago and have an extra stick of memory I'd like to be able to use. When is inserted the computer starts, and then reboots immediately in an endless reboot cycle. As soon as the 4th stick is removed, the computer works fine. Right now I have 6 GB of my 8 GB installed. Is there a solution that I am missing to enabling this motherboard to actually boot up with all 8 GB (it supports it). Right now it won't even boot up to BIOS with the 4 sticks... only 3? Memory: 1 x G.SKILL 4 GB (2 x 2 GB) 240-Pin DDR2 SDRAM DDR2 1100 (PC2 8800) Dual Channel Kit Desktop Memory Model F2-8800CL5D-4GBPI - Retail (URL: ) http://www.newegg.com/Product/Product.aspx?Item=N82E16820231194 Motherboard: 1 x GIGABYTE GA-EP45-UD3R LGA 775 Intel P45 ATX Intel Motherboard - Retail ( URL: )http://www.newegg.com/Product/Product.aspx?Item=N82E16813128359

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  • 6-core Sandy Bridge-E vs. 4-core Ivy Bridge

    - by Alexander Ilyin
    I am currently choosing between Intel Core i7-3770 (quad, Ivy) and Intel Core i7-3930K (6 cores, Sandy Bridge-E). This machine will be used for both work (Adobe, Autodesk software, graphic and coding-related) and gaming. Even if some applications I will use are capable to utilize all 6 cores at once, is it worth preferring Sandy Bridge-E to newer Ivy Bridge? Games aren't and probably will perform better on Ivy, won't they? 6-core is also twice as expensive as a quad Ivy.

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  • 8Gb Fiber Channcel HBA vs. 10 Gb SPF+ Converged HBA

    - by Hossein Aarabi
    I am putting a Dell server together, more specifically R720. I have to select the correct Host Bus Adapter. This HBA on R710 will connect to a storage device. I am confused between these two: QLogic 2562, Dual Port 8Gb Optical Fiber Channel HBA (price $2,045) QLogic 8262, Dual Port 10Gb SFP+, Converged Network Adapter (price $1,618) I thought since the QLogic 2562 is a fiber channel and is more expensive then it is faster in terms of IOPS. But, it is a 8Gb as opposed to 10 Gb of SFP+. My questions: Which one is better (IOPS performance, etc.)? Why should I choose one over another?

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  • GlusterFS vs Ceph, which is better for production use for the moment?

    - by Mickey Shine
    I am evaluating GlusterFS and Ceph, seems Gluster is FUSE based which means it may be not as fast as Ceph. But looks like Gluster got a very friendly control panel and is ease to use. Ceph was merged into linux kernel a few days ago and this indicates that it has much more potential energy and may be a good choice in the future. I am wondering which(even out of the two?) is a better choice for production use? It would be nice if you could share your practical experiences

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  • Self-hosting vs. Budget hosting - What are the economics?

    - by cdonner
    My current hosting provider (shared Linux, unlimited domains, < $10 per month, with about 20 sites) has been giving me a lot of grief lately. I am contemplating to just ditch them and repurpose the old Sun V20z that is sitting in my basement rack, and move the hosting in-house, literally. My math goes as follows: my company pays up to $80 a months for my home internet service, which would cover the upgrade from currently Fios to Comcast business internet with 5 static IPs. So this comes free. running the server will cost me about $180/year at the current rate of approx. $.2/kWh my time is free So, it seems that the my net cost of doing this would be about $80 anually, plus the work that goes into setup and maintenance. I will have to get email hosting somewhere, which I do not want to do myself. On the other side of the balance sheet, I'd likely get better uptime than my provider based on recent stats, will not get suspended and don't have to spend hours with customer support. Overall, I am not convinced. Has anybody actually done that? What was your experience, and did it pay off?

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  • Linked vSphere servers preventing cloning?

    - by brian
    I've currently got a pair of vSphere5 standard servers (physical, not VAs) managing about a hundred ESX 4.1 and 5 hosts in two different physical and logical datacenters. With our last purchase, we bought another vSphere license for the new vS server. I unmanaged all the ESX servers in one datacenter and added them to new vSphere server. Our previous single-vS-server layout used to be: -vSphere1 --Datacenter1 (where the physical ESX host was located) ---Folder ----ESX server1 --Datacenter2 ---Folder ----ESX server2 Now it looks like -vSphere1 --Datacenter1 ---Folder ----ESX server1 -vSphere2 (new vSphere server) --Datacenter2 ---Folder ----ESX server2 ESX server2 was removed from vSphere1's inventory and added to vSphere2's, so it is now managed by vSphere2. This is nice and all, as no vSphere <-- ESX management traffic leaves the physical datacenter, except for one huge oversight: when I go to clone a VM, the opposite vSphere server (and thus other datacenter) does not show up in the list on the first page of the wizard. Is this a bug, a license limitation, or is it just simply not possible to clone a VM from an ESX box managed by one vS server to another ESX box managed by a /different/ vS server?

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  • Bash vs. Gnu screen : Replace Ctrl-A with Ctrl-Shift-A

    - by Stefan Lasiewski
    I'm a new user to GNU Screen. I've been using Bash for a very long time, and I want to give GNU Screen a try. As you know, GNU Screen uses 'C-a' (Control-A) as as the command character. Trouble is, this interferes with the Line Editing feature in Bash (and GNU Readline), because Control-A in Bash will Move to the start of the line." I know I can set the Command Character to another key sequence, like "^Q" or "``" (Backtick), but I have trouble finding another key sequence which isn't already in use (^Q is used by the terminal, backtick is used when writing shell scripts). It appears that the Command Character may only be one or two characters in length. Can I set the GNU Screen control character to be something like "Control-Shift-A"? (I can't use more then one hyperlink yet, so I cannot link to the Bash documentation)

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  • checksum in raw sockets and pcap

    - by hero
    i am using pcap library to sniff some packets, change their tcp data , and then inject my packet on the network. my question is: if i changed in the tcp data, should i recalculate the length field in the tcp header? should i also change the checksum? i read in a page on how to create raw sockets that if you set the tcp_checksum to 0, the kernel will automatically calculate it and fill it, is this true for windows machines also?

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  • OCZ Vertex 3 SSD boot failure

    - by Col Zero
    Ok, so I just purchased and received a 120GB OCZ Vertex 3. I had Windows 7 on an .ISO file on my computer. I formatted a USB stick and configured it to be read as a CD so that I could install windows onto my SSD from it. I started my comp, had the boot priority set to my USB, starting installing windows 7 to my SSD. And out of no where (I wasn't watching) my computer restarted and it brought me back to the beginning of the Windows 7 set-up. So I turned my computer off and booted it up from the SSD to see if it had installed onto the SSD. The first 2 attempts I had a disk boot failure. So I plugged my hard drive back in, started my computer, turned it off, plugged the SSD back in (literally) and it booted up fine/ Finalized windows got internet set up, and Windows had updates that required a restart. So I restarted and had another disk boot failure. Now I have a disk boot failure every time I try to start my computer up through my SSD. Extra Info: My SSD has never been able to be detected in my BIOS unless my Hard Drive was unplugged (eve then my BIOS didn't always detect it). MY SSD wasn't detected in my BIOS the first and only time it successfully booted up. My SSD literally boots up successfully randomly (only once unfortunately) and is detected in my BIOS randomly. I've tried switching cords etc and nothing has worked. I just want to get this damn thing running so I can see whats its like. I finally found a way to get the OS on this sucker and now it won't even boot up. Any help appreciated

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  • Is there any difference between null and 0 when assigning to pointers in unsafe code?

    - by Eloff
    This may seem odd, but in C (size_t)(void*)0 == 0 is not guaranteed by the language spec. Compilers are allowed to use any value they want for null (although they almost always use 0.) In C#, you can assign null or (T*)0 to a pointer in unsafe code. Is there any difference? (long)(void*)0 == 0 (guaranteed or not? put another way: IntPtr.Zero.ToInt64() == 0) MSDN has this to say about IntPtr.Zero: "The value of this field is not equivalent to null." Well if you want to be compatible with C code, that makes a lot of sense - it'd be worthless for interop if it didn't convert to a C null pointer. But I want to know if IntPtr.Zero.ToInt64() == 0 which may be possible, even if internally IntPtr.Zero is some other value (the CLR may or may not convert null to 0 in the cast operation) Not a duplicate of this question

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  • mysql 5.0.23 vs 5.5 performance benefits and upgrade issues ?

    - by WarDoGG
    I have been told that mysql 5.5 has a significant performanance boost compared to 5.0 Our server handles alot of data (around 30 million records processed per 5-10 seconds) and requires every drop of performance boost we can give. Will it be beneficial if we upgrade from 5.0.23 to mysql 5.5 ? Also, we have lots of database indexes setup on the tables and i've been told that sometimes the indexes become corrupt after a version upgrade and they have to be rebuilt. Is this true ?

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  • Apache 2.4 Prefork vs. PHP-FPM Event shows sig decrease in requests per second

    - by Mark
    On my Apache 2.4.2 server with a standard mod_php Prefork setup these are my server-status results Current Time: Wednesday, 24-Oct-2012 19:36:24 CDT Restart Time: Wednesday, 24-Oct-2012 01:27:30 CDT Parent Server Config. Generation: 1 Parent Server MPM Generation: 0 Server uptime: 18 hours 8 minutes 54 seconds Total accesses: 14304233 - Total Traffic: 342.3 GB CPU Usage: u12584.6 s721.93 cu.66 cs3.43 - 20.4% CPU load 219 requests/sec - 5.4 MB/second - 25.1 kB/request 507 requests currently being processed, 355 idle workers ______KKKKR_K______W_KKC___CKK_K_K_W__CC_KKK_KK._K_K_KK._KKKK_K_ K_____KK_KKKK_K_KK__K___KK_K___K_____CKKK_WK_K_____KCKK__K___K_K K_CK_K_K_____K__KKKK_K__K___K_KK_K_K_KKKCK____________KK_CK__KKK __C_KKKKKKK___CK___C_KKK_K__C__K_CK____KKK__K__K__K_K__KK_CK_K__ _KKKKK_K_W__KK______K___K__W___C_K__K____KKKKKKKK.KKKKKKKCK_K___ _C_KK_K_WK__K_KK__K__RK_KK___K____K_KK_K_K___RKC_KKKK___KKKC_K_W _C_KK_KK__W____KC__KKK__KKK___K___KKK_KK_K_KKW__K_KR_KK_KK__KKK_ R__KKK__KKKKKK__K_KKKKK_K__K_K___KKW_________KK_K___KKK___KK.K_C KKKKKKW_____K__K_KKC_KCKK_K_KK_K__KK__K___K__KK_KK__________KK__ __K___KK_K__K_C_KK_K___KK__KK__K__KCK_K__KK_________K_K_KK__.K__ K_CKK.CCRW__KKKKKKKKKKKC__W____K___KWK_KK_KKC______.K_K_KK_KKKC_ __KKK_W_KCKKK_K_K____CCCK__KC_KKKK_K____K_CK_K____K__K____KKK_KK KK___K_K_K__KW__KCKKKK____WKWK__K_KKRKK__C_K_KK_KK_K__KKCC_K__C_ KK_K___K_KK______K_____CKK_K_______KK_CKCK__KKKKK____K__K..K____ __KKWK_KW__KKK__K_KKK___K_KK_KKK__KK___KK___KK_KK___KK____KKWKKC KK_KKKK_................................` When I switch to a PHP-FPM setup with the Event MPM with no other variables changes, my requests/sec plummet and overall apache response is garbage. Current Time: Wednesday, 24-Oct-2012 19:51:21 CDT Restart Time: Wednesday, 24-Oct-2012 19:48:03 CDT Parent Server Config. Generation: 1 Parent Server MPM Generation: 0 Server uptime: 3 minutes 18 seconds Total accesses: 18720 - Total Traffic: 307.1 MB CPU Usage: u16.57 s4.74 cu0 cs0 - 10.8% CPU load 94.5 requests/sec - 1.6 MB/second - 16.8 kB/request 15 requests currently being processed, 49 idle workers PID Connections Threads Async connections total accepting busy idle writing keep-alive closing 11701 114 no 10 22 0 66 38 11702 134 no 5 27 0 81 48 Sum 248 15 49 0 147 86 __R_R__W___RRW________RR__R___W_W_______W_____W_____________R_R_ Is there any obvious reason anyone could think of why this would be the case. I can provide any other additional stats or server setup info to help out. Ive tried tweaking everything up and down and nothing really helps get the PHP-FPM setup anywhere near a baseic prefork/mod-php setup. Thanks!

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  • Open Garmin GPI files in Linux

    - by zero
    i have several files that are in the Garmin GPI format, from here, and want to access them in Linux. How can I do that? hello dear renan - well i found the solution - so thanks for your try to add some sense to the question. GEREAT work - and here we have the answer: i will Install gpsbabel to convert the stuff. The gpi.files are just xml files, You can - after converting with gpsbabel read them as a human being.

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  • Difference between adding MIME types in IIS via Websites vs Local Computer?

    - by Alex Key
    What is the difference between adding MIME types in these 2 different situations? When in IIS 6 manager... Right click on the computer name (local computer) properties mime types Right click on the "Web sites" folder properties http headers mime types I'm guessing that perhaps option 1 adds MIME types for FTP also? However if that were true i'd expect to be able to add MIME types specifically in the properties of FTP (and not just websites). thanks for your help.

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  • Intel Core i7-4960HQ vs. 4850HQ (Haswell) [on hold]

    - by Timothy R. Butler
    I'm looking at the new MacBook Pros and trying to decide between the Core i7-4960HQ (2.6 GHz) and i7-4850 (2.3 GHz). I've found some synthetic benchmarks comparing them, but I haven't found a lot of data, so I'd appreciate any pointers to good comparisons for the Haswell family (especially these two processors). My cursory analysis seems to suggest there isn't a huge gain from the extra 300 MHz. I'd like to determine not only whether this is generally true, but also to figure out if the gains that are made in performance come at too high of cost. Is the 2.6 going to be pushing the limits of what can fit in a thin laptop without overheating? I've looked at some of Intel's documentation, but have not been able to determine what the normal and maximum operating temperature differences are for the models. In the past, there have been times that Intel's fastest models in a given range ran especially hot and/or consumed significantly more power compared to slightly slower models. Do those concerns factor into the current generation?

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  • Security risk of JIRA standalone installation running JRE version 1.6.0_26 vs 1.6.0_29 (latest)

    - by kayaker243
    Atlassian recently introduced a standalone installer that installs JIRA, along with its own JRE. Unfortunately the JRE Atlassian bundles with this installer is 1.6.0_26, whereas the current version of the JRE is 1.6.0_29. This is potentially concerning given there were vulnerabilities in _26 that were fixed in the subsequent versions. We are currently using the bundled-installer version of JIRA and one contractor has recommended we ditch this for the system-installed JRE. My question is this: what is the actual security risk of continuing to use the _26 version of the JRE included in the bundled installer? There is no public access to our install of JIRA (only about 20 employees and contractors can login to our JIRA) and it's only accessible on a subdomain of a domain at which there's no publicly-available website. If there's a not insignificant risk inherent in sticking with the older JRE, why hasn't Atlassian upgraded the default JRE?

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  • Performance difference between MacBook Pro (2.8 GHz) vs Air (1.7 GHz)?

    - by jonathanconway
    I'm comparing these two Apple laptops: MacBook Pro (13", 2011 model): 2.8GHz dual-core Intel Core i7 processor with 4MB shared L3 cache 4GB (two 2GB SO-DIMMs) of 1333MHz DDR3 SDRAM AMD Radeon HD 6770M graphics processor with 1GB of GDDR5 memory on 2.4GHz configuration MacBook Air (13", 2011 model): 1.7GHz dual-core Intel Core i5 with 3MB shared L3 cache 4GB of 1333MHz DDR3 onboard memory Intel HD Graphics 3000 processor with 384MB of DDR3 SDRAM shared with main memory There's definitely a gap between them in terms of CPU speed and graphics, but what practical difference would this make on a day-to-day basis? On the one hand, I love the sleek, thin appearance of the Air. On the other hand, I don't want a machine that's going to be dog-slow when doing tasks such as running Virtual Machines, dual-booting to Windows and running multiple instances of Visual Studio, and maybe some light gaming. Is there going to be a major difference that makes the MacBook Pro a more attractive purchase?

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  • running localhost mta vs. php smtp'ing via 3rd party api

    - by nandoP
    so the question is, would it be "better" to run localhost mta (ie. postfix) or "better" to use 3rd party restful api, embedded in the application, to send email? i am curious what people would do here. i find postfix on linux allows much greater flexibility and control. the default sendmail/postfix logging (/var/log/maillog) suits me fine, and you can even set limits via iptables on per uuid's which allows rate-limiting apps.

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  • Why is SMB from a Windows 7 64-bit to OS X Server so slow when using DNS vs IP?

    - by chuboy
    When I connect my 64-bit Windows 7 to a OS X server using \servername, my transfer rates are around 400KB/s. However, when I do the same thing using \192.168.0.10 (which is the IP of the server), transfer rates jump to 30MB/s. All of this happens via a gigabit ethernet cable with my wireless disabled I heard Samba itself "doesn't use DNS", but if that's the case, how am I able to connect to the server in the first place?

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  • rhel/centos vs. ubuntu (possibly other debian-based systems) linux in handling duplicate ips in the same subnet

    - by johnshen64
    This has bothered me for quite a while but I never found out why or how to change the behavior. ip duplicates could be caused by typos or dhcp errors etc., but they do occur from time to time. in rpm-based systems such as centos, the old server with the duplicate ip wins, and the new server will get an error in bringing up the nic (ip address already used). this is somewhat harmless because we can just fix the system that is coming up. ubuntu only the other hand happily grabs the used ip for itself and leave the old server/device without a valid ip. this is the more dangerous behavior because it causes outages. what i want is to change the ubuntu behavior to that of the centos/rhel so would appreciate any help.

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  • IIS displaying page differently when localhost is used in URL vs. hostname

    - by maik
    I'm having (yet another) strange problem with IIS. When viewing an ASPX page I've designed on my local machine by browsing to http://localhost/page.aspx the page looks as expected (and looks the same in IE, Firefox and Chrome. If I change localhost to my_hostname the page is rendered with a disabled vertical scroll bar. The behavior was first noticed when I published my site to our live server and saw the same discrepancy. After beating my head against the wall I tried what I described above and was able to duplicate my "problem". So with that, I turn to you guys. This wouldn't really be an issue (save for the cross-browser inconsistency) except that this screws up an "absolute"ly positioned <div> moving it partway off the screen instead of being centered like it should be (and is when viewed any other way except in IE when the address is anything but localhost).

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