Search Results

Search found 59951 results on 2399 pages for 'laptop memory question'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 84/2399 | < Previous Page | 80 81 82 83 84 85 86 87 88 89 90 91  | Next Page >

  • my laptop touchpad stops working during the live demo

    - by user170453
    I m completely new to all of this... I just want to install ubuntu because it is suppose to get rid of most of the virus problems, so anyway I was following online instructions to install ubuntu alongside windows 7 these are my laptop specifications. I tried booting with a pendrive using netbootin and other similar program but once I boot the laptop in ubuntu I click try without installing button and go to desktop then my mouse stops working. What am I supposed to do or what am I doing wrong?? Also please suggest a thread for proper installation of ubuntu alongside Windows 7. Thank you.

    Read the article

  • Condition Variable in Shared Memory - is this code POSIX-conformant?

    - by GrahamS
    We've been trying to use a mutex and condition variable to synchronise access to named shared memory on a LynuxWorks LynxOS-SE system (POSIX-conformant). One shared memory block is called "/sync" and contains the mutex and condition variable, the other is "/data" and contains the actual data we are syncing access to. We're seeing failures from pthread_cond_signal() if both processes don't perform the mmap() calls in exactly the same order, or if one process mmaps in some other piece of shared memory before it mmaps the sync memory. This example code is about as short as I can make it: #include <sys/types.h> #include <sys/stat.h> #include <sys/mman.h> #include <sys/file.h> #include <stdlib.h> #include <pthread.h> #include <errno.h> #include <iostream> #include <string> using namespace std; static const string shm_name_sync("/sync"); static const string shm_name_data("/data"); struct shared_memory_sync { pthread_mutex_t mutex; pthread_cond_t condition; }; struct shared_memory_data { int a; int b; }; //Create 2 shared memory objects // - sync contains 2 shared synchronisation objects (mutex and condition) // - data not important void create() { // Create and map 'sync' shared memory int fd_sync = shm_open(shm_name_sync.c_str(), O_CREAT|O_RDWR, S_IRUSR|S_IWUSR); ftruncate(fd_sync, sizeof(shared_memory_sync)); void* addr_sync = mmap(0, sizeof(shared_memory_sync), PROT_READ|PROT_WRITE, MAP_SHARED, fd_sync, 0); shared_memory_sync* p_sync = static_cast<shared_memory_sync*> (addr_sync); // init the cond and mutex pthread_condattr_t cond_attr; pthread_condattr_init(&cond_attr); pthread_condattr_setpshared(&cond_attr, PTHREAD_PROCESS_SHARED); pthread_cond_init(&(p_sync->condition), &cond_attr); pthread_condattr_destroy(&cond_attr); pthread_mutexattr_t m_attr; pthread_mutexattr_init(&m_attr); pthread_mutexattr_setpshared(&m_attr, PTHREAD_PROCESS_SHARED); pthread_mutex_init(&(p_sync->mutex), &m_attr); pthread_mutexattr_destroy(&m_attr); // Create the 'data' shared memory int fd_data = shm_open(shm_name_data.c_str(), O_CREAT|O_RDWR, S_IRUSR|S_IWUSR); ftruncate(fd_data, sizeof(shared_memory_data)); void* addr_data = mmap(0, sizeof(shared_memory_data), PROT_READ|PROT_WRITE, MAP_SHARED, fd_data, 0); shared_memory_data* p_data = static_cast<shared_memory_data*> (addr_data); // Run the second process while it sleeps here. sleep(10); int res = pthread_cond_signal(&(p_sync->condition)); assert(res==0); // <--- !!!THIS ASSERT WILL FAIL ON LYNXOS!!! munmap(addr_sync, sizeof(shared_memory_sync)); shm_unlink(shm_name_sync.c_str()); munmap(addr_data, sizeof(shared_memory_data)); shm_unlink(shm_name_data.c_str()); } //Open the same 2 shared memory objects but in reverse order // - data // - sync void open() { sleep(2); int fd_data = shm_open(shm_name_data.c_str(), O_RDWR, S_IRUSR|S_IWUSR); void* addr_data = mmap(0, sizeof(shared_memory_data), PROT_READ|PROT_WRITE, MAP_SHARED, fd_data, 0); shared_memory_data* p_data = static_cast<shared_memory_data*> (addr_data); int fd_sync = shm_open(shm_name_sync.c_str(), O_RDWR, S_IRUSR|S_IWUSR); void* addr_sync = mmap(0, sizeof(shared_memory_sync), PROT_READ|PROT_WRITE, MAP_SHARED, fd_sync, 0); shared_memory_sync* p_sync = static_cast<shared_memory_sync*> (addr_sync); // Wait on the condvar pthread_mutex_lock(&(p_sync->mutex)); pthread_cond_wait(&(p_sync->condition), &(p_sync->mutex)); pthread_mutex_unlock(&(p_sync->mutex)); munmap(addr_sync, sizeof(shared_memory_sync)); munmap(addr_data, sizeof(shared_memory_data)); } int main(int argc, char** argv) { if(argc>1) { open(); } else { create(); } return (0); } Run this program with no args, then another copy with args, and the first one will fail at the assert checking the pthread_cond_signal(). But change the open() function to mmap() the "/sync" memory first and it will all work fine. This seems like a major bug in LynxOS but LynuxWorks claim that using mutex and condition variable in this way is not covered by the POSIX standard, so they are not interested. Can anyone determine if this code does violate POSIX? Or does anyone have any convincing documentation that it is POSIX compliant?

    Read the article

  • SQLAuthority News – SQL SERVER 2008 R2 Pricing

    - by pinaldave
    I was recently asked question about SQL Server 2008 pricing. I have bookmarked official site here which lists the pricing. Official site: What’s New in SQL Server 2008 R2 Editions Editions Per Processor PricingRetail Per Server Plus CAL PricingRetail Parallel Data Warehouse $57,498 Not offered via Server CAL Datacenter $57,498 Not offered via Server CAL Enterprise $28,749 $13,969 with 25 CALs Standard $7,499 $1,849 with 5 CALs However, I have [...]

    Read the article

  • SQL SERVER – Creating All New Database with Full Recovery Model

    - by pinaldave
    Sometimes, complex problems have very simple solutions. Let us see the following email which I received recently. “Hi Pinal, In our system when we create new database, by default, they are all created with the Simple Recovery Model. We have to manually change the recovery model after we create the database. We used the following simple T-SQL code: CREATE DATABASE dbname. We are very frustrated with this situation. We want all our databases to have the Full Recovery Model option by default. We are considering the following methods; please suggest the most efficient one among them. 1) Creating a Policy; when it is violated, the database model can be fixed 2) Triggers at Server Level 3) Automated Job which goes through all the databases and checks their recovery model; if the DBA has not changed the model, then the job will list the Databases and change their recovery model Also, we have a situation where we need a database in the Simple Recovery Model as well – how to white list them? Please suggest the best method.” Indeed, an interesting email! The answer to their question, i.e., which is the best method to fit their needs (white list, default, etc)? It will be NONE of the above. Here is the solution in one line and also the easiest way: Just go to your Model database: Path in SSMS >> Databases > System Databases >> model >> Right Click Properties >> Options >> Recovery Model - Select Full from dropdown. Every newly created database takes its base template from the Model Database. If you create a custom SP in the Model Database, when you create a new database, it will automatically exist in that database. Any database that was already created before making changes in the Model Database will not be affected at all. Creating Policy is also a good method, and I will blog about this in a separate blog post, but looking at current specifications of the reader, I think the Model Database should be modified to have a Full Recovery Option. While writing this blog post, I remembered my another blog post where the model database log file was growing drastically even though there were no transactions SQL SERVER – Log File Growing for Model Database – model Database Log File Grew Too Big. NOTE: Please do not touch the Model Database unnecessary. It is a strict “No.” If you want to create an object that you need in all the databases, then instead of creating it in model database, I suggest that you create a new database called maintenance and create the object there. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: PostADay, Readers Question, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

    Read the article

  • how can i figure out iis7 memory leak from this dump result?

    - by Cenk Erdem
    my application sometimes starts to eat too much memory in a few seconds then crashes, i used debugdiag to take a dump when this happened, in the analyse i see lots of memory allocations all of them has the same information and each of them allocates 128mb. they look like this: Address 0x00000000`aff41798 Allocation Time 06:56:06 since tracking started Allocation Size 128.00 MBytes Function Source Destination LeakTrack+186cf clr!CExecutionEngine::ClrVirtualAlloc+3c clr!ClrVirtualAlloc+3c clr!WKS::virtual_alloc+42 clr!WKS::gc_heap::get_segment+a2 clr!WKS::gc_heap::get_large_segment+204 clr!WKS::gc_heap::loh_get_new_seg+78 clr! ?? ::FNODOBFM::`string'+a008a clr!WKS::gc_heap::try_allocate_more_space+31b clr!WKS::gc_heap::allocate_more_space+26 clr!WKS::gc_heap::allocate_large_object+6a clr!WKS::GCHeap::Alloc+b5 clr!FramedAllocateString+b06 mscorlib_ni+39f5fd mscorlib_ni+389f83 System_Xml_ni+451adc System_Data_SqlXml_ni+2275d4 System_Data_SqlXml_ni+233f32 System_Data_SqlXml_ni+8ec28 System_Data_SqlXml_ni+8eb65 System_Web_ni+2882b2 System_Web_ni+2794b6 System_Web_ni+2794b6 0x7FF002474BC what can be wrong about my code? any suggestions?

    Read the article

  • is it good to use Loptop keyboard cover ?

    - by mgpyone
    Currently, I've used a laptop keyboard cover (for Mac), my brother told me that it's not good for your lappy,because of it keeps the laptop heat. is it ? also using the Laptop Plastic Cover. it has any effect on the laptop heat ? I like to get any suggestions, please.

    Read the article

  • page allocation failure - am I running out of memory?

    - by mfriedman
    Lately I've noticing entries like this one in the kern.log of one of my servers: Feb 16 00:24:05 aramis kernel: swapper: page allocation failure. order:0, mode:0x20 This is what I'd like to know: What exactly does that message mean? Is my server running out of memory? The swap usage is quite low (less than 10%), and so far I haven't noticed any processes being killed because of lack of memory. Additional information: The server is a Xen instance (DomU) running Debian 6.0 It has 512 MB of RAM and a 512 MB swap partition CPU load inside the virtual machine shows an average of 0.25

    Read the article

  • System says memory controller not available and doesn't boot?

    - by Martin
    Hello everybody, Recently I have had a MainBoard-problem. I've send my mainboard to service and today I got it back from the company. It is a Foxconn 520a mainboard. Now I have installed my exchanged mainboard. But now I have a problem. My system boots until the device list with IRQ entries appear. The system says "Verifying DMI-pool-data..." and nothing happens. The IRQ-device list shows that the memory-controller is not available. All other devices have got an IRQ. Bus No. Device No. Func No. Vendor/Device Class Device Class IRQ 0 0 0 10DE 0547 0500 Memory Controller NA Do you have any ideas where the problem could be? I already have disconnected all unnecessary devices like the hard disks. Perhaps it is a BIOS problem, but I don't know where I should look. Would be nice if there is any advice, Greetings, Martin

    Read the article

  • Installed 4GB memory but Windows XP 32 bit only reporting 2GB?

    - by AnthonyWJones
    I've just taken an existing XP Pro 32 bit system that had only 0.5GB of memory installed and maxed it out to 4GB. The BIOS reports the 4GB ram however when XP is booted and I look at the computer properties only 2GB of RAM is reported. Can anyone explain this? Before we go up any blind allys the /3GB switch is not the answer here, I have no need for a single process to use more the 2GB of memory. I'm wondering if the the 32 bit XP Pro is deliberately limited to 2GB. I seem to remember seeing an excellent table on a Microsoft site listing all the various SKUs of Windows and what each one was limited to. However I can't seem to find that table now.

    Read the article

  • Installed 4GB memory but Windows XP 32 bit only reporting 2GB?

    - by AnthonyWJones
    I've just taken an existing XP Pro 32 bit system that had only 0.5GB of memory installed and maxed it out to 4GB. The BIOS reports the 4GB ram however when XP is booted and I look at the computer properties only 2GB of RAM is reported. Can anyone explain this? Before we go up any blind allys the /3GB switch is not the answer here, I have no need for a single process to use more the 2GB of memory. I'm wondering if the the 32 bit XP Pro is deliberately limited to 2GB. I seem to remember seeing an excellent table on a Microsoft site listing all the various SKUs of Windows and what each one was limited to. However I can't seem to find that table now.

    Read the article

  • ubuntu and laptops or mini-laptops

    - by doug
    Hi here I'm planing to buy a laptop or mini-laptop and use a Ubuntu OS on it. The thing is that i really need it to use it many hours on batery mode. I'm thinking that i'll have troubles in finding the right rivers and my batery to be waisted. What other problems can I have? Also, I wana use the laptop or mini-laptop outside/outdoor. What display technology is most recommended for that?

    Read the article

  • Per bytes RAM memory acess

    - by b-gen-jack-o-neill
    Hi, I have just a simple question. Today memory DDR chips are 64 bits wide, and the CPU data bus is also 64 bits wide. But memory is stil organised in single bytes. So, what I want to ask is, when CPU selects some memory adress, it should be one byte, right? Becouse the lowest memory portion you can access is 1 byte. But, if you get 1 byte per 1 adress, why is memory bus 8 bytes wide?

    Read the article

  • Memory management (segmentation and paging) in 80286 and 80386: How does it work?

    - by Andrew J. Brehm
    I found lots of Web sites and books explaining how memory management worked on the 8086 and later x86 CPUs in Real Mode. I understand, I think, how two 16 bit values, segment address and offset are combined to get a linear 20 bit physical address (shift segment four bits to the left, add offset; segments are 64K and start every 16 bytes). But I couldn't find any good Web sites or books that explained how memory management works in Protected Mode, specifically the differences between 80286 and 80386. Can anyone point me to a good Web site or book (or explain it right here)? (For extra credit, i.e. an upvote, how does it work in Long Mode?)

    Read the article

  • What is this port/connector on my laptop?

    - by iconiK
    I have this port on my laptop and I have no idea what is it used for. It's not even listen in the laptop technical specifications. The laptop is a HP Pavillion dv5-1101en. Here is a larger image showing all the ports on the laptop: Left to right: D-sub 15 pin (AKA VGA) Unknown port Ethernet HDMI eSATA USB IEEE 1394 (AKA FireWire)

    Read the article

  • How do I make the Windows low memory warning less sensitive?

    - by Stephen
    I keep getting this annoying low memory warning/prompt to close games I play. It happens very often and I still have ~6 gigs of ram free. I disabled virtual memory because it was putting stuff on the pagefile when I had 10 gigs free ram so that spiked my disk usage. Is there any way to disable this warning? I have 16GB ram so it shouldn't be an issue. I would prefer to keep pagefiles off because my HD is very loud so it's nice to keep it spun down as much as possible. I don't want to disable it completely. Ideally, I would like it to go off when I have ~2GB left rather than 6, but if this isn't viable, I may just disable it completely.

    Read the article

  • ideal memory configuration 4 bank, ddr3, AM3+ FX - 1 vs 2 vs 4 dimms?

    - by TardisGuy
    Ok, so ive been looking around, trying to learn and understand the way that ram works. Ive gotten one answer that said "The addressing is best for 2 sticks, and when you use 4; it slows down" Another answer said something like: Theres bank/channel interleave that makes the memory read like one stick Also I read something about the memory density also being a factor. I dug further and found out that theres a higher speed limit on my board for 2 sticks vs 4, so now im trying to put an image in my head of how and why, and... pfft. Can anyone explain, or recommend a resource that would answer these questions?

    Read the article

  • Do memory cards have any max file size limitation?

    - by Dmitriy R
    I am not sure where to ask this question, so perhaps it is physical limitation. I have a 8 GB flash micro SD memory card. When I copy any file size of up to few gigabytes, copying happens normally. But if I am trying to copy file over 4 GB file, then the system tells me like insufficient memory on card, although 8 GB is available. So perhaps only 32 bit address is used for keeping size of file in micro SD card, or is my micro SD defective?

    Read the article

  • 2 GB of memory in 1 GB system is a problem?

    - by daveslab
    Hi folks, I just installed 2 1 Gig sticks into my friend's machine, thinking that it would take all the 2 GBs. Unfortunately, according to Dell's website, it says the maximum amount of memory accessible to the machine is arbitrarily set to 1 GB! The system indeed reports having 1 GB of memory accessible to it, but I'm worried that having 2 GB in there might break something. Are my fears reasonable? Should I buy two 512 MB sticks instead? Thanks for any help!

    Read the article

  • Is it safe to use up all memory on linux server, not leaving anything for the cache?

    - by Temnovit
    I have a CentOS server fully dedicated to MySQL 5.5 (with innodb tables mostly). Server has 32 GB RAM, SSD disks, and avarage memory usage looks like this: So about 25GB is in use and about 6.5GB is cached. I am experiencing performance problems with WRITE queries, so I was thinking, is this the optimal cache size? I might increase innodb buffer size, so that linux cache would become smaller, or decrease it, so it would be bigger. What is the optimal used/cached memory balance for busy MySQL server on linux?

    Read the article

  • use ubuntu from a removable drive to work both on laptop and desktop computer

    - by moragos
    my laptop, which i run ubuntu on, is getting a bit old and i find it's getting slower and slower at running applications. My desktop computer is stronger, but I can't give up on the portability of my laptop. I was thinking of installing a HD drawer for both my laptop and desktop. and when I come home just pull the HD from the laptop and plug it into the desktop. I wanted to ask if anyone have tried it or have any inputs on the idea

    Read the article

  • We have a Solaris 9 server running Oracle 10G and have been getting memory consumption errors for a few weeks now

    - by another_netadmin
    We recently upgraded our Enterprise application and everything worked ok until one weekend when we did a server reboot, ever since then we have run into memory errors. The server has 4GB of physical memory installed and the kernel parameters are set to the following (/etc/system). I'm not an Oracle guy so I'm not sure where to start looking but any informaiton is greatly appreciated. Thanks in advance. There are two databases running on this server, one is a production database and the other is a pre-production database. [root@bandb /]# cat /etc/system | grep seminfo set semsys:seminfo_semmni=100 set semsys:seminfo_semmns=2048 set semsys:seminfo_semmsl=400 set semsys:seminfo_semopm=100 set semsys:seminfo_semvmx=32767 [root@bandb /]# cat /etc/system | grep shminfo set shmsys:shminfo_shmmax=4294967295 set shmsys:shminfo_shmmin=1 set shmsys:shminfo_shmmni=100 set shmsys:shminfo_shmseg=10 [root@bandb /]#

    Read the article

  • How to conncet(join) host laptop to the guset 2k8 server [closed]

    - by Dawood Said
    Dear brother I have core i5 laptop with wireless ip " 192.168.3.102", and I installed virtulbx in my laptop.In the virtualbox I made a network of two virtual machine W2k8 and window xp of ip's 192.168.3.200 and 192.168.3.201 respectively with " internal network" option from virtulabox. Now i want to coonet the host laptop to this virtual network and also wnat that the internet is running on the laptop . Is it possible please help me in this regard

    Read the article

  • PASS 13 Dispatches: Memory Optimized = On

    - by Tony Davis
    I'm at the PASS Summit in Charlotte for the Day 1 keynote by Quentin Clarke, Corporate VP of the data platform group at Microsoft. He's talking about how SQL Server 2014 is “pushing boundaries” and first up is SQL Server 2014's In-Memory OLTP technology (former codename “hekaton”) It is a feature that provokes a lot of interest and for good reason as, without any need for application rewrites or hardware updates, it can enable us to ensure that an application can find in memory most or all of the data it needs, and can lead to huge improvements in processing times. A good recent hekaton use cases article talks about applications that need a “Shock Absorber” when either spikes or just a high rate of incoming workload (including data in ETL scenarios) become a primary bottleneck. To get a really deep look at this technology, I would check out David DeWitt's summit keynote tomorrow (it will be live streamed). Other than that, to get started I'd recommend Kalen Delaney's whitepaper. She offers a lot of insight into how it works and how to start to define memory-optimized tables, and natively compiled stored procedures. These memory-optimized tables uses completely optimistic multi-version concurrency control – no waiting on locks! After that, Tom LaRock has compiled a useful set of links to drill deeper, and includes one to Microsoft's AMR tool to help you gauge the tables that might benefit most. Tony.

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 80 81 82 83 84 85 86 87 88 89 90 91  | Next Page >