Search Results

Search found 13249 results on 530 pages for 'performance tuning'.

Page 366/530 | < Previous Page | 362 363 364 365 366 367 368 369 370 371 372 373  | Next Page >

• Memcached clustered alternative

  - by Johan Kooijman

  I'm looking to replace memcached. We have a LOT of traffic to our central memcached node which I'd like to split. There's only so much trunking networks I can do. My general idea is to install a memcached-type daemon on every webserver and have the daemons replicate set/delete/updates over all the daemons, so that each webserver connects to a socket or on localhost. All data should be available on all nodes. The alternatives: - repcached (max 2 masters) - redis (single master) - couchdb/mongodb/handlersocket - persistent data on disk, I'd like to remove the disk part to gain more performance. Any hints?

  Read the article

• what are the rules for SLI ( GTX 550 Ti )

  - by equivalent8

  I got ASUS GTX 550 Ti and I want to SLI it with another graphic card. I heard that not all graphic cards are good idea to SLI, (or not all combinations) because sometimes the final performance could be even worse that with one graphic card. Is that true? What are the rules ? ( maybe chip-set needs to be same or something ? ) I was wondering if you can recommend me what Graphic card should I use as with mine. Should I use same one (GTX 550 Ti) ?

  Read the article

• Are Virtual-Desktop Managers good or bad for system resources?

  - by jasondavis

  I am looking at Virtual-Desktop Managers for Windows 7. Right now it seems that VirtualWin is supposed to be about the best one available for use on Windows. I have never used anything like this though and I am just curious from others experience and knowledge, does something like this hog up a lot of system resources? I do not NEED it but it is a nice feature to have when I do want to use it, my PC's performance is more important then using it. So is virtual esktop managers a resource hog or probably not? Please share any tips/advice/ or comments on them, thank you =)

  Read the article

• ESXI 4.0 Slow response in opening anything accross the network on a Virtual Server running Win2008

  - by user40944

  Hi I recently installed a HP ML350G6 Server with Windows Small Business Server 200864bit, Exchange 2007. The server was running fantastically and we transferred all user data onto the new server and no problems for 2 weeks! We then installed SQL2008 and transferred the accounts package onto the server and this is where the problems started. Users are now complaining to open a work document can take 2 minutes and the same with regard to anything else. The server itself seems fine, the virtual server seems fine! No disk performance problems (doesn't go above 50% unless i really copy lots of things), no memory, (12Gb only using 7Gb) cpu (usage is low average about 15%) etc on both the VM and in Windows Task manager. I have made sure disk caching is enabled on the raid controller (which made no difference). Network cards are running 1Gb and plugged into HP GB switch. Please help!

  Read the article

• Openvpn client-to-client connection reencrypted at Server?

  - by user1684411

  currently i'm using a site-2-site openvpn setup. The routers en/decrypt all traffic that goes from one net to another. One of them is the Openvpn server. This works but performance is not as good as possible. I think the limiting factor is the cpu power of the router. Would it be better if i use client-to-client connections and access the fileserver in the one net from a pc in the other, because the openvpn-server does not have to decrypt the (whole) packets?

  Read the article

• Windows file Sync

  - by Deane Venske

  So I have a big problem at the moment. Trying to find a reliable solution for syncing 2 windows IIS servers. I need to keep the web content imaged on both. Now I have been trying to use Rsync to this point, but unfortunately file permission errors are a nightmare to manage this way. I'm testing out dropbox, but the performance sucks. I'm more familiar with Linux stuff and I've used Rsync in the past but isn't there a native windows solution that will work?

  Read the article

• If a SQL Server Replication Distributor and Subscriber are on the same server, should a PUSH or PULL subsciption be used?

  - by userx

  Thanks in advance for any help. I'm setting up a new Microsoft SQL Server replication and I have the Distributor and Subscriber running on the same server. The Publisher is on a remote server (as it is a production database and MS recommends that for high volumes, the Distributor should be remote). I don't know much about the inner workings of PUSH vs PULL subscriptions, but my gut tells me that a PUSH subscription would be less resource intensive because (1) the Distributor is already remote, so this shouldn't negatively effect the Publisher and (2) pushing the transactions from the Distributor to the Subscriber is more efficient than the Subscriber polling the Distribution database. Does any one have any resources or insight into PUSH vs PULL which would recommend one over the other? Is there really going to be that big of a difference in performance / reliability / security?

  Read the article

• KVM guest storage difference with NBD and NFS

  - by WojonsTech

  I am setting up my own little private cloud for my own use maybe for a project or to. I am using linux kvm on debian 6. I have 3 servers 2 of them for compute nodes and 1 storage node. I would I have already installed kvm made a few test machines got my networking setup. I have 2 nics on each server 1 nic is for web traffic other nic is for network traffic. My first Idea was to use NFS for storing the guest machines which can range in size, maybe 8gb maybe 100gb, it just depends. I was doing have heard of nbd before seems like it could work but I dont know what the performance differences are and if it will effect my enviroment, nfs looks like it will be easier to use.

  Read the article

• Turning a running Linux system into a KVM instance on another machine

  - by Charles

  I have two physical machines that I wish to virtualize. I can not (physically) plug the hard drives from either machine into the new machine that will act as their VM host, so I think that copying the entire structure of the system over using dd is out of the question. How can I best go about migrating these machines from their hardware to the KVM environment? I've set up empty, unformatted LVM logical volumes to host their filesystems, with the understanding that giving the VMs a real partition to work with achieves higher performance than sticking an image on the filesystem. Would I be better off creating new OS installs and rsyncing the differences over? FWIW, the two machines to be VM'd are running CentOS 5, and the host machine is running Ubuntu Server 10.04 for no particularly important reason. I doubt this matters too much, as it's still going to be KVM and libvert that matter.

  Read the article

• Why do I see different TCP behaviour between IIS and FTP server applications on Windows 2003?

  - by rupello

  I am comparing Wireshark traces of a 10MB file download file from: the FileZilla FTP server and IIS (using HTTP) on the same Windows 2003 server. The FTP download performs faster and the trace shows the server behaving as expected, sending more data to the client with every ACK received: Link to full-size image The HTTP server trace shows a more bursty pattern. The timing of the send bursts are sometimes unrelated to any ACKs received from the client (circled in red): Link to full-size image Anyone have a suggestion as to why IIS traffic is having like this? Update: We have tried modifying the http.sys registry settings (setting MaxBytesPerSend to 256k and MaxBufferedSendBytes to 64k as recommended). Changing MaxBytesPerSend does seem to improve performance by increasing the amount of in-flight data , but we still see the same bursty pattern.

  Read the article

• Why would an ext3 filsystem be rolled back on a Debian VM running in VirtualBox after loss of power to the host

  - by Sevas

  A Debian Virtual machine runs as a Guest VirtualBox VM. It's filesystem is EXT3. The host system loses power and after booting up the host system and guest VM, I find that the VM's filesystem has been rolled back to a previous state, losing changes made to the filesystem some time before losing power. The operations that were rolled back had been fully completed before the loss of power (files fully copied, file handles closed, etc.), but it's possible and even likely that other write operations were occuring on the VM at the point of the crash. So I am trying to figure out if it's the filesystem recovery process that rolls back filesystem operations after encountering corruption post power loss, or is it possibly related to VirtualBox and the way it ignores flush requests for performance gains by default (discussed here) Are there any other factors that would result in the filesystem being rolled back after losing power?

  Read the article

• Boot.ini on Windows Server 2003 R2

  - by Jason H.

  I have a Windows Server 2003 R2 with 48 GB of RAM; server has been running strong for quite some time. Recently our boot.ini was modified causing issues, most likely by our remote administrators. Now the server is only showing 14 GB of RAM. This has caused major performance issues for our end users. Our remote administrators have stated "we don't change the boot.ini settings(switches)". However, I know for a fact that all of the local administrators have not modified the switches (due to lack of permissions). The real question.. Is it possible to "audit" who has modified the boot.ini? If thats not possible, can the boot.ini be set via startup? Any help would be greatly appreciated. This is an ongoing issue that I would love to resolve.

  Read the article

• JBoss 4.2.3 Won't Start

  - by Thody

  Hi, I'm trying to start a new installation of JBoss 4.2.3, and it's getting as far as "INFO [Server] Core system initialized", then hanging for several minutes. There is a Java process running, but only at ~35%. Also, looking at the boot.log, there are no entries after ~1s after starting the boot. Any ideas what might be up? Update: After about 10 minutes, I got a handful of garbage collection warnings: GC Warning: Repeated allocation of very large block (appr. size 512000): May lead to memory leak and poor performance.

  Read the article

• Can I Store MediaWiki Files on the cloud?

  - by user219048

  I recently got a chromebook, and I've been brainstorming different ways to put mediawiki on it (with localhost, not a server). One way I've read about online is to go into developer mode to download and set up LAMP. I was wondering, wouldn't I be able to store the apache, mysql, php, and mediawiki files on the cloud (google drive)? And if so, would anything prevent me from accessing my wiki on any other computer's localhost, assuming I could just log into Google Drive to access these files? Might there be any reduced performance when operating from the cloud?

  Read the article

• Our company has 100,000s+ photos, how to store and browse/find these efficiently?

  - by tobefound

  We currently store our photos in a structure like this: folder\1\10000 - 19999.JPG|ORF|TIF (10 000 files) folder\2\20000 - 29999.JPG|ORF|TIF (10 000 files) etc... They are stored on 4 different 2TB D-link NASes attached and shared on our office network (\\nas1, \\nas2, and so on...) Problems: 1) When a client (Windows only, Vista and 7) wishes to browse the let's say \\nas1\folder\1\ folder, performance is quite poor. A problem. List takes a long time to generate in explorer window. Even with icons turned off. 2) Initial access to the NAS itself is sometimes slow. Problem. SAN disks too expensive for us. Even with iSCSI interface/switch technology. I've read a lot of tech pages saying that storing 100 000+ files in one single folder shouldn't be a problem. But we don't dare go there now that we experience problems on a 10K level. All input greatly appreciated, /T

  Read the article

• Everything You Ever Wanted to Know about Mod_Rewrite Rules but Were Afraid to Ask?

  - by Kyle Brandt

  How can I become an expert at writing mod_rewrite rules? What is the fundamental format and structure of mod_rewrite rules? What form/flavor of regular expressions do I need to have a solid grasp of? What are the most common mistakes/pitfalls when writing rewrite rules? What is a good method for testing and verifying mod_rewrite rules? Are there SEO or performance implications of mod_rewrite rules I should be aware of? Are there common situations where mod_rewrite might seem like the right tool for the job but isn't? What are some common examples?

  Read the article

• Lightweight alternative to R for RHEL?

  - by Eric Rath

  I want to use R for some statistical analysis of logfile information, but found that even the "limited" R-core RPM has a lot of dependencies not already installed. I don't want to install so many packages for a peripheral need. Are there lightweight alternatives for simple statistical analysis on RHEL 6? I have an R script that accepts on stdin a large set of values -- one value per line -- and prints out the min, max, mean, median, 95th percentile, and standard deviation. For more context, I'm using grep and awk to find GET requests for a particular path in our webserver log files, get the response times, and calculate the metrics listed above in order to measure the impact on performance of changes to a web application. I don't need any graphing capabilities, just simple computation. Is there something I've overlooked?

  Read the article

• PHP CPU utilization limit

  - by knightrider

  I have done some research on the net regarding the problem. My questions is NOT how to reduce cpu utilization by improving algorithm or improving the performance by using multitasking or limiting CPU per system user. I have a website where user logs in does some processing and logout. The site uses linux server, php and apache. The problem is that I cant control the amount of CPU allocated to each user. ie I want give a guarantee that a user will get say atleast 5% of CPU (assume total number of users is less than 20). How can I do this? Any solution (A php code, apache server settings, or any out of box soln) is welcomed. Thankyou very much for reading this :)

  Read the article

• How to arrange 2 SSD with 2 SATA?

  - by alfish

  I like to have best io performance as well as good capaciyy and reliability out of a server that hosts a busy forum, which involves loads of static files download. I am wondering what is the best plan to format and use the disks given that the server has only 4 disk bays and I have 2 SSD and 2 SATA disks at hand. I am currently thinking about putting the disks in RAID 10 so that SSD contains /var/lib/mysql as well as most of the OS (Likely to be Debian) and SATA disk to contain /path/to/static/files. However I'd like to hear your expert opinion on this. Thanks

  Read the article

• Opinion choosing Switch

  - by mastercode

  ) i have to reestruct a LAN network, with (currently) +/- 60hosts connected ... i have File Servers hosted, VoIP Phones,wireless AP's,printers, scanners, plotters,biometric dispositive,and 2 QNAP TS412 as FileServer and BackupServer, a Mac Mini as main Server of almost all services that need server ... and, a HP V1910-24 (L2+) and another two switches,but, only L2. which switch in your opinion, could fit better this reestruct, to ensure a VLAN division- and have to support Inter VLAN routing also - provide better performance, and also, allow a Future expansion. the budget, is low xD hehe!!

  Read the article

• How long does it take in practice to warm up large in-memory databases?

  - by Sim

  Companies such as Peak Hosting are offering 64 core machines with 512Gb RAM for $2K/month. This is a very interesting choice for in-memory databases such as Memcached/Redis as well as databases whose performance degrades rapidly when the data & indexes don't fit in RAM, such as MongoDB. My main concern with monster machines such as these is the time it takes to warm up an in-memory database. In my experience, theoretical metrics, e.g., that SATA can load 100Mb/sec, fall short of what happens in practice. Even at that rate, 100Mb/sec means that loading up 512Gb RAM machine from SATA disks can take over 1 1/2 hours (!). I am looking for real-world reports of warm-up times for machines with very large memory. Please, share details of the software on the machine, data size, storage configuration, e.g., SATA or SSD, network, hosting/cloud provider, if relevant, etc.

  Read the article

• Mysql skip-name-resolve

  - by user72459

  I had recently purchased a new server, and transferred all my accounts via WHM Transfer. The problem is that when WHM takes a daily backup, it outputs are message such as DBD::mysql::st execute failed: There is no such grant defined for user 'abc' on host 'myhostname' The problem is solved when I remove skip-name-resolve from my my.cnf file. Tough I dont find any differences in the speed (when I dont add it), it is often mentioned in forums that adding skip-name-resolve optimizes Mysql Performance. Does adding skip-name-resolve really help, if one has a Dedicated server?

  Read the article

• Can I install linux has the host in a dell poweredge server (r710)?

  - by bksunday

  I might have a deal on dual six core poweredge server and I'm about to go test its performance but I'm wondering few things which I can't find answers for, and I can't test them before buying the machine. I don't want vmware at all so can I just wipe it and install linux instead, or is it embedded in some parts I have no access to. Will I still be able to update different firmwares (perc controllers, motherboard, etc) on this dell poweredge or does it require to have the vmware esxi installed as the host os. And optionally.. is there any foreseeable problems in doing so?

  Read the article

• Windows 2003 Server - File Permissions

  - by nickstan

  I have a Windows 2003 web server with a tree of folders that contains around 100GB of small images. I need to update the permissions on this folder to add a new user with access. I tried to do this by right clicking on the folder and adding the new user but the process never completed. I left it running for around an hour but it started to heavily impact the peformance of the server. Is there any other way to change these folder permissions without affecting server performance? Many Thanks Nick

  Read the article

• Which OS should I boot into for virtualization?

  - by acidzombie24

  This might be a silly question. I use windows 7 99% of the time. I run linux 10% of the time and XP 5% of the time. I am thinking about getting a Intel® Core™ i7-2600 Processor which has hardware support for virtualization. I dont think i want more than one partition. May have a swap partition. Which OS should I make my primary (and only) partition? I suspect windows7 if i am always using it as going through a linux layer would slow it down. Does it matter much which OS i use if i have hardware support for virtualization? At the moment I am using VMWare player. I suspect software doesnt effect performance?

  Read the article

< Previous Page | 362 363 364 365 366 367 368 369 370 371 372 373  | Next Page >