Search Results

Search found 7805 results on 313 pages for 'high voltage'.

Page 160/313 | < Previous Page | 156 157 158 159 160 161 162 163 164 165 166 167  | Next Page >

• Areca 1880ix RAID hangs

  - by Dave

  Areca RAID controller ARC-1880ix-12 (firmware 1.50) hangs when on high load. My setup is: Chenbro 3U chassis Intel S5500BC mainboard Xeon 5603 CPU 16GB of RAM 12 Seagate SAS drives ST32000645SS (2 of them as hot spare, 10 as RAID10) Mellanox Infiniband HBA card This server is working as external infiniband storage for Xen VMs. When load is quite big Areca's firmware hangs - it becomes unreachable even from Areca's ethernet adapter. After resetting the server power it returns to normal operation. While Areca is hanged I can confirm that it is powered (ethernet link is active) and Infiniband HBA works Ok. Thanks in advance for any idea or suggestion where the problem might be!

  Read the article

• Notebook with NVIDIA Optimus not switching video card in games

  - by user140739

  I have a Samsung RC720 notebook with Intel Integrated Graphics and NVIDIA GeForce GT 520M. As you can see it has two video adapters and Optimus is supposed to switch between them. But when I choose dedicated GPU in NVIDIA Control Panel and try to run, for example, GTA IV, it uses integrated graphics and I get very poor performance. I have already installed last NVIDIA and notebook drivers, chose high-performance in NVIDIA Control Panel, tried to execute with "Run with graphics processor..." context option and so on. Thanks for help.

  Read the article

• Debian is equal to Ubuntu

  - by rkmax

  The title of the question is confusing, and does not explain my point well. I've always used Ubuntu server from version 10.04 and never had problem, now I have 4 machines with ubuntu 12.04.1 LTS installed on them and I found that under any circumstances where there is a high burden throws me a problem and machine crashes constantly. the most common is CPU#X stuck for Ns! Now I wonder if the administration of Debian is equal to that of ubuntu, regarding Servicos, packages, folders structure for example I would like to know if the services are installed in the same manner using invoke-rc.d, which handles additional security, including for not giving blind caning. I've been looking for a comparison chart but have not found anything yet, something between Debian 6.0.6 and Ubuntu 12.04 also the most common "hiccups" when you install the system

  Read the article

• Funnelling http traffic

  - by spencer p

  I have a situation where a large batch of servers (X), on demand, need to request data from a smaller set of web servers (Y). The worst case scenario is if all servers in X decide to fetch different requests to one server in Y. That would be X amount of connections, which could be a very large burst of traffic. The best case scenario is if 1 server in X hit 1 server in Y in tandem. Life does not work like this. One idea to entertain is placing a proxy, similar to squid between X and Y. All of X servers can connect to this proxy, but would result in a few persistent (http keepalive) connections to Y. If The few were say, 3 or 4, then it would funnel. If we could then rate limit those connections and traffic decides to spike unusually high, we wouldn't hurt anyone but ourselves. Thoughts?

  Read the article

• Why does my CPU Usage reach 100% too often?

  - by deathlock

  I'm using a dual-core processor and often see my CPU usage reaches 100%. I realize this may happen if I'm running too much applications, so when I know the computer starts to run slowly, I start to close my applications. I usually run 4-5 applications simultaneously. Usually those are: web browser (Google Chrome), Adobe Photoshop, Notepad++, XAMPP, and Windows Task Manager. Usually I close tabs in my Chrome first, because I often browse the net with about 20 tabs/4 windows open, so I presume that would take much memory (bad habit, I know). But even after closing Chrome's tabs or closing other applications, my CPU Usage often stays at high percentage - 72% at best, 100% at worst. I check the Processes tab on Windows Task Manager and usually found the System, System Idle Process, or services.exe taking the highest CPU process (could reach 60). Why is this happening? And is there any solution? EDIT I have T2250 @ 1,73 Ghz and 2.5 GB RAM

  Read the article

• Ubuntu Linux: Process swap memory and memory usage

  - by David Halter

  My Ubuntu eats more memory than the task manager is showing: sudo ps -e --format rss | awk 'BEGIN{c=0} {c+=$1} END{print c/1024}' 1043.84 free -m total used free shared buffers cached Mem: 3860 1878 1982 0 20 679 -/+ buffers/cache: 1178 2681 Swap: 2729 1035 1693 That's strange. Can someone explain this difference? But what is more important: I'd like to know how much memory a process is really using. I don't want to know the virtual memory size, but rather the resident memory plus swap of a process. I have also tried to output the format param "sz" of 'ps', but the sum of this is to high (5450 MB) (param 'size' gives 8323.45 MB). Are there any other options? I really want to use this, to determine which programs/processes are eating to much memory (and swap), to kill them, because hibernate might not be working if the swap partition is to little.

  Read the article

• Improve performance on Lync desktop sharing

  - by Trikks

  I'm using Lync 2010 server to handle some clients communication and screen sharing. The biggest issue is the performance with screen sharing, it is of rather high quality but the frame rate is very poor. I have been reading and searching a lot on the subject and 95% of all topics is about bandwidth, we have a 200/200 MBit Internet connection solely for this application. Also my test machines runs on an internal gigabit lan. The speeds between all boxes is hysterically fast. Next step was to ensure that there where some profiles for different bandwidths, so i registered some New-CsNetworkBandwidthPolicyProfile -Identity 50Mb_Link -Description "BW profile for 50Mb links" -AudioBWLimit 20000 -AudioBWSessionLimit 200 -VideoBWLimit 14000 -VideoBWSessionLimit 700 New-CsNetworkBandwidthPolicyProfile -Identity 100Mb_Link -Description "BW profile for 100Mb links" -AudioBWLimit 30000 -AudioBWSessionLimit 300 -VideoBWLimit 25000 -VideoBWSessionLimit 1500 Nothing fancy happend here either. Non of the test boxes have anything from Norton installed, they doesn't have any firewalls running (nor does the Lync server), all fences are down in this environment just for the testing. Is there any thing that I may have missed to improve the quality of this? Thanks

  Read the article

• Add "secure" in cookie by httpd server

  - by Abhishek

  How do I have to configure my httpd server to add "Secure" in the cookies? I tried the one in the below link, http://blog.modsecurity.org/2008/12/fixing-both-missing-httponly-and-secure-cookie-flags.html but this did not seem to be working. I inspected the cookie via firebug and found that the cookies have "HttpOnly" but not "Secure". I double checked the configurations and they the same as mentioned in the link. I also noticed that the server response time goes bit high when doing it by mod_security. Is there a better way to do it? Any ideas or pointers to configurations would be helpful

  Read the article

• Streamline Active Directory account creation via automated web site

  - by SteveM82

  In my company we have high employee turnover, and hence our helpdesk receives about a dozen requests per week for new Active Directory accounts. Currently, we receive these requests simply via e-mail or voice-mail, and rarely do we have all of the information necessary to create the account. I would like to find a web application that can be used by a manager or supervisor to formalize the requests they make for AD accounts for new employees under their command. Ideally, the application would prompt for all of necessary information, and allow the helpdesk to review the requests and approve or deny each one. If approved, the application would take care of creating the account and send an e-mail to the manager. I have found several application on the Internet that handle self-service account management (i.e., password resets or update contact info), which is also nice to have, but nothing that streamlines the new account request and creation part. Can anyone make suggestions on such an application? Thanks.

  Read the article

• why is there so much variance in prices for a 2-bay NAS?

  - by jcollum

  I'm considering buying a 2bay NAS for media storage. I'm perplexed by the variety of prices. They go from about $115 to $1200. The only thing I could see that differentiated the high end drive was encryption and a dual gigabit ethernet port. I don't understand how that can add up to $800+ dollars. Clearly I should know why there's this price variance before considering buying a 2 Bay NAS. Newegg link to 2 Bay NAS Should I move this question to serverfault?

  Read the article

• Purpose of JBoss tables

  - by Rich

  Hi Can anyone point me in the direction of some documentation (or provide the information here) about the following tables, created by JBoss 5.1.0 when it starts up? I know what they are for at a high level, and know why they are there, but I could do with some lower-level documentation about each table's purpose. The tables are: hilosequences timers jbm_counter jbm_dual jbm_id_cache jbm_msg jbm_msg_ref jbm_postoffice jbm_role jbm_tx jbm_user I know that the first two are associated with uuid-key-generator and the EJB Timer Service respectively, while the rest are associated with JBoss Messaging. What I want to know is something along the lines of "jmg_msg stores each message when it is created...", that kind of thing. I wasn't sure where to ask this question, ServerFault or StackOverflow, but I decided it wasn't programming related so thought I should put it here - I hope that's ok! Thanks Rich

  Read the article

• Wordpress Installation on Two Servers - Loadbalancing

  - by rihatum

  Hi All, I have to install wordpress (One Blog, one domain, for e.g. mycompany.com/blog) on two servers sharing one database on a different server, these two servers are behind a loadbalancer and the db would be on another server. We are planning this way due to high traffic. I have done standalone wordpress installations on a single server, on windows 2003, 2008 with IIS6, 7 etc I am just researching as to how would I implement this. What would be the steps to achieve this and upon searching I saw some posts regarding the wp-content/uploads directory to be synced at regular intervals ? your help much appreciated Thanks for reading

  Read the article

• Understanding ESXi and Memory Usage

  - by John

  Hi, I am currently testing VMWare ESXi on a test machine. My host machine has 4gigs of ram. I have three guests and each is assigned a memory limit of 1 GB (and only 512 MB reserved). The host summary screen shows a memory capacity of 4082.55 MB and a usage of 2828 MB with two guests running. This seems to make sense, two gigs for each VM plus an overhead for the host. 800MB seems high but that is still reasonable. But on the Resource Allocation Screen I see a memory capacity of 2356 MB and an available capacity of 596 MB. Under the configuration tab, memory link I see a physical total of 4082.5 MB, System of 531.5 MB and VM of 3551.0 MB. I have only allocated my VMs for a gig each, and with two VMs running they are taking up almost two times the amount of ram allocated. Why is this, and why does the Resource Allocation screen short change me so much?

  Read the article

• 10 System LAN latency with ADSL modem as gateway

  - by itsoft3g

  Recently I expanded LAN in my office from 3 to 10 computers. Structure star topology, one ADSL Modem connected to One Switch which is again connected to 10 computers. Also we have Wifi device Netgear which is connected from switch. ADSL Modem acts as the DHCP Server, all the system will have default gateway IP (ADSL Modem's IP) Network latency is now become very high, All the chat severs disconnect often like google talk, skype etc, also internet become very very slow. when all the computer turned on. We have 4 Mbps Download and 100 Kbps upload Net speed. Its look like ADSL Modem cannot able to handle all the connections. I tried to setup a system as default gateway which will connect to modem, not sure how to do this. Please advice on this.

  Read the article

• difference between server and desktop

  - by user1241438

  I want to set up a webserver. I would like to buy a hardware for that and i am trying to understand if i should buy a desktop and host the webserver on that or do i have to buy some used server from ebay and host on it. Example is http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=180986172861&ssPageName=ADME:X:RTQ:US:1123 But what is the difference in desktop and server? These days even desktops are coming with high RAM. Only other difference i see is servers have RAID HARD disk. Is there any other difference?

  Read the article

• Why does my company's software download get blocked by anti-virus programs when downloading from the company website but not other websites?

  - by Adam Burgess

  My company distributes software via website download off of a URL that is on our company's website. The download is an .EXE. We are getting calls from multiple customers saying the download is being blocked. We can help them download by turning off the virus-scan software, but wondering what is causing the block. Here are the details: We have other downloadable .EXEs that download fine without being blocked from the same company website. Our problem download file downloads fine from other websites (i.e., Dropbox) without being blocked. In summary, this one particular download from our company website is being blocked by various anti-virus programs a high percentage of the time. Any suggestions?

  Read the article

• How to troubleshoot latency between 2 linux hosts

  - by Jimm

  The latency between 2 linux hosts is about .23ms. They are connected by one switch. Ping & Wireshark confirm the latency number. But, i dont have any visibility into what is causing this latency. How can i know if the latency is due to NIC on host A or B or the switch or the cables? UPDATE: The .23 ms latency is bad for my existing application, which sends messages at very high frequency and i am trying to see if it can be brought down to .1ms

  Read the article

• ZFS, dedupe and PST files

  - by Unreason

  I am interested to know what would be expected maximum dedupe ratio for a set of PST files. I have ~40G of pst files from ~15 usres with high level of duplication of attachments. I am running tests to see if I can have significant space savings if I store the data on ZFS with dedupe. For this purpose I have installed a test setup of Nexenta, but was wondering if someone here had already done this and what level of deduplication I might expect (or in another words how sensitive are pst files to block alignment and what are the parameters that can influence the ratio?). Initial test show very low dedupe ratio and I did find explanation that block level dedupe would not be efficient here and that byte level dedupe would be much better (and that it should be performed by application that is aware of internal organization), so I am just double checking here if someone have some more input. Otherwise I will probably be converting PST files to IMAP.

  Read the article

• Intel HD 4000 and Nvidia GT 650 working together on laptop

  - by Juan

  My new win7 Acer notebook has i5 CPU with Intel HD 4000 and Nvida GT650 GPU. Obviously monitor is plugged to Intel HD. In Nvidia control panel I can configure PhysX but that doesn't help. Windows system rating shows high gaming experience and average/low windows aero experience. What does that mean? Does my laptop use nvidia for games/3d apps nad Intel HD 4000 for aero? Should I disable Intel HD in bios, but how to plug monitor to nvidia? Or should I leave everything like now because everything works as it suppose to work? Here is image capture of some states: http://oi47.tinypic.com/34p0qp4.jpg

  Read the article

• Optimal Disk Setup for OLTP SQL Server

  - by Chris

  We have a high transaction (lots of reads and writes) database server (running SQL 2005) that is currently set up with a RAID 1 OS partition (C:) and a RAID 5 data/log/tempdb partition (D:). The C: has 2 drives and the D: has 4 drives. The server has around 300 databases ranging from 10MB to 2GB in size. I have been reading up on best practices for partioning the disks, but would like some opinions on our setup since we are so limited in the number of disks. It seems like RAID 10 is popular, but I dont think we could use it with only 6 total disks to work with. Thanks. Update I went with 3 RAID 1 Partitions (2 disks each) Partition 1: OS, TempDB, Backups Partition 2: Logs Partition 3: Data

  Read the article

• Windows DFS Limitations

  - by Phil

  So far I have seen an article on performance and scalability mainly focusing on how long it takes to add new links. But is there any information about limitations regarding number of files, number of folders, total size, etc? Right now I have a single file server with millions of JPGs (approx 45 TB worth) that are shared on the network through several standard file shares. I plan to create a DFS namespace and replicate all these images to another server for high availability purposes. Will I encounter extra problems with DFS that I'm otherwise not experiencing with plain-jane file shares? Is there a more recommended way to replicate these millions of files and make them available on the network? EDIT: I would experiment on my own and write a blog post about it, but I don't have the hardware for the second server yet. I'd like to collect information before buying 45 TB of hard drive space...

  Read the article

• Optimal way to make MySQL backups for fairly large databases (MyISAM / InnoDB)

  - by WinkyWolly

  Currently we have one beefy MySQL database that runs a couple of high traffic Django based websites as well as some e-commerce websites of decent size. As a result we have a fair amount of large databases using both InnoDB and MyISAM tables. Unfortunately we've recently hit a wall due to the amount of traffic so I've setup another master server to help alleviate reads / backups. Now at the moment I simply use mysqldump with a few arguments and it's proven to be fine.. until now. Obviously mysqldump is a slow quick method however I believe we've outgrown its use. I now need a good alternative and have been looking into utilizing Maatkits mk-parallel-dump utility or an LVM snapshot solution. Succinct short version: I have a fairly large MySQL databases I need to backup Current method using mysqldump is inefficient and slow (causing issues) Looking into something such as mk-parallel-dump or LVM snapshots Any recommendations or ideas would be appreciated - since I have to re-do how we're doing things I rather have it done properly / most efficient :).

  Read the article

• Why such a dramatic difference in wireless router max. simultaneous connections?

  - by Jez

  Recently, I've needed to look into buying a wireless router for a mission-critical system at work that will need to support quite a few simultaneous connections (potentially a few hundred laptops). One thing I've noticed is that there seems to be a dramatic difference between the max. simultaneous connections different routers can support; see this page for example - anything from 32 to 35,000! Why is there this degree of difference? You'd have thought that if we know how to make routers that can handle thousands of connections, we wouldn't be making stuff that's limited to a pathetic 32 anymore. Is it a firmware thing? A hardware thing? Are low-end manufacturers purposely putting low arbitrary connection limits in so people can be "encouraged" to pay more for high-end routers?

  Read the article

• How can I run a job when the server load is low?

  - by jberryman

  I have a command that runs a disk snapshot (on EC2, freezing an XFS disk and running an EBS snapshot command), which is set to run on a regular schedule as a cron job. Ideally I would like to be able to have the command delayed for a period of time if the disk is being used heavily at the moment the task is scheduled to run. I'm afraid that using nice/ionice might not have the proper effect, as I would like the script to run with high priority while it is running (i.e. wait for a good time, then finish fast). Thanks.

  Read the article

• NTFS write speed really slow (<15MB/s)

  - by Zulakis

  I got a new Seagate 4TB harddrive formatted with ntfs using parted /dev/sda > mklabel gpt > mkpart pri 1 -1 mkfs.ntfs /dev/sda1 When copying files or testing writespeed with dd, the max writespeed I can get is about 12MB/s. The harddrive should be capable of atleast 100MB/s. top shows high cpu usage for the mount.ntfs process. The system has a AMD dualcore. This is the output of parted /dev/sda unit s print: Model: ATA ST4000DM000-1F21 (scsi) Disk /dev/sda: 7814037168s Sector size (logical/physical): 512B/4096B Partition Table: gpt Number Start End Size File system Name Flags 1 2048s 7814035455s 7814033408s pri The used kernel is 3.5.0-23-generic. The ntfs-3g versions I tried are ntfs-3g 2012.1.15AR.1 (ubuntu 12.04 default) and the newest version ntfs-3g 2013.1.13AR.2. When formatted with ext4 I get good write speeds with about 140MB/s. How can I fix the writespeed?

  Read the article

< Previous Page | 156 157 158 159 160 161 162 163 164 165 166 167  | Next Page >