Questions tagged [performance]
For questions concerning computer, or computer-related, performance. Please include metrics in your questions.
4,420
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Why does a c++ code run significantly longer on one computer than another? [closed]
The code is exactly the same -- I copied it from one computer to another. The code is compiled with g++-4 (4.9.1) obtained from fink on OSX on both machines, and is not run in parallel.
Compiler ...
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1
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25
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Why do desktop OSes have a high response time when resumed from sleep/hibernation mode?
Why do desktop OSes such as Windows have a high response time when resumed from sleep or hibernation mode?
Intuitively, it should take less time to respond. But what is messed up internally that ...
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Automatic Maintenance Significantly Slows Down Computer
Problem
I've found on several occasions that I've gone to use my computer only to find that it's practically unusable; just about everything runs extremely slowly.
Symptoms
The action center flag in ...
- 1,450
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2
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59
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Need help diagnosing my machine
I have something that just slows my computer to a crawl sometimes. Not running anything big. Yesterday all I had running (besides background apps) were Firefox & Windows Explorer and could barely ...
- 216
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1
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128
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How can I identify what is slowing down my mac when nothing is eating up CPU?
Sometimes I'll have characters appearing slowly on screen, an unwelcome beach ball or pages like google images will freeze while scrolling.
When this happens often all seems calm in activity monitor, ...
- 121
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3
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10k
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Lenovo Y50 laptop does not perform well when Discharging [closed]
I just bought this laptop (Lenovo Ideapad Y50).
I'm playing games such as Battlefield 4 (upto date DLC) and WatchDogs. Even though I set battery manger to High Performance mode game doesnt works well ...
- 232
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27
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Laptop hot, CPU intensice
Laptop has been at around 70 degrees C for a while while idle compared to regular of around 50 (60 under load).
Load average is 3 compared to past of 1.2 to 1.5.
cat /proc/cpuinfo |grep MHz returns ...
- 903
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87
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Excel consuming absurd amount of memmory
I have a excel file consuming a huge amount of memmory, something ~500mb.
The file contains only one sheet, no images or scripts and its size is only 719kb.
I have checked all suggested solutions ...
- 154
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2
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756
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Computer took much longer than normal to boot, and now windows open and close slow
I've got a Sager laptop, a GeForce GTX 680M, an i7, 32GB of RAM, and I'm running Windows 7. My computer recently began to make that sound Windows makes when you plug in or unplug something (The da duh ...
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48
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Some applications slow on network (win 8.1), where to start?
I recently got a new computer with windows 8.1.
I identified at least two applications are very slow when the are using the network. This is the MS dynamics AX client (very slow all the time) and ...
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2k
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poor write performance with RAID 5 array
I have an Intel RS2WC080 RAID controller card connected to an array of 8 WD Black 4TB SATA3 drives, in a RAID5 configuration.
While the read speed is ~750MB/s the write speed hovers around 45MB/s. I ...
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603
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Xcode keeps showing the beachball when I select something
When I select something in the xcode editor and then try to select some other text, the spinning beachball comes up and i have to wait for a couple of seconds before i can continue working. I have the ...
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1
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6k
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How to identify hardware performance bottleneck in laptop? [closed]
Is there any tool that helps to determine the weakest link of my current laptop hardware specification? Any online guide to help me choose nice balanced configuration for the new laptop?
I need to ...
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GIMP slows down my Ubuntu 14.04 over time
I have some problems with my GIMP recently. When I start GIMP it runs perfectly fine, but over time, say about 15 minutes, it's starting to slow down my Ubuntu (14.04). After checking my system ...
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728
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How do I optimize eSATA performance in Linux?
I experience very slow eSATA performance. Around 5 mb/s on a disk that easily handles 150-200 mb/s. Do I need to enable some setting or module in order to speed it up? The disk is a 4 TB disk and the ...
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Cores and threads - Performance
I wonder if a 4 core/8 thread cpu will perform better than a 4 core/4 thread cpu.
If the answer is yes; How much better will a 4/8 perform?
EDIT: What if its for running 4 single threaded apps?
And ...
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Switching between integrated and discrete graphics on alienware 14?
I recently received a new alienware 14 in the mail and was having some issues switching between integrated and discrete graphics. When I used the inbuilt benchmark tests in Just Cause 2 i pulled in a ...
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Computer slows down during downloads
Last week, I reinstalled my company laptop, a HP Pavilion dv7-6b22ed. Everything was installed okay, but there is one issue I can't solve: whenever I download a file, be it a several hunderd MB file ...
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5
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493
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How do I speed up my PC or what should I replace?
I have the following config:
Core 2 Duo E7400 @ 2.8 GHz
1 GB DDR RAM 667 MHz
250 GB HDD @ 5400 RPM
Intel DG31PR Motherboard-
This is an April 2009 Computer and running Windows 7 32 bit. The ...
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164
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Should I connect my 2nd monitor to integrated or discrete graphics to maximize 3D performance on the 1st monitor?
I have 2 monitors connected to my PC, and the secondary monitor is used for things that don't really need the power of a discrete GPU. I want to maximize the performance of 3D applications on my ...
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Linux MD software raid stripe cache size
From what I can piece together the /sys/block/md0/md/stripe_cache_size is for raid5 and 6 set at a very low default value to avoid starving machines for memory.
By increasing this value you can get a ...
- 1,250
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56
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How to speed up Connections to specific websites during peak times
There is a website I use for work that at a specific time loads some information that I need but since everyone is checking at that exact moment their servers slow down. I was told there are ways to ...
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Linux Virtual Machine on VirtualBox suddenly running slow
I am running a VM using Virtual Box (version 4.2.26, but had same issue with v4.3.14)
The VM was created using Vagrant. It runs headless, it just serves up websites and I use "vagrant ssh" to get to ...
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8k
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Adobe photoshop "not enough ram" message opening a 60 MB TIFF file
I am working with Windows 7 x64 on a full HD monitor, Intel i5-2500K and 8 GB RAM, currently available 5,5GB. I tried to extend photoshop's memory usage and scratch disk settings as following:
But as ...
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175
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Windows 7 - Acer Aspire M5811
I have a problem with my Windows 7 Desktop PC. Today I used it normally and it turned off normally to, but the next time I tried to turn it on, it became extremely slow. It's normal until I need to ...
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4
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40k
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Slow vmware vm with fast brand new laptop
I've just bought a fast core i7 laptop with 16GB of RAM running Windows 8.1.
When I run a VMware VM on this computer, the VM is extremely slow. And if I look at the host HD activity during this time, ...
- 171
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653
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Computer slow when there is over 8GB RAM
My motherboard is a Sapphire pure black X58, with 6 ram slots ( tri-channel ) and 3x 2GB G.Skill PC12800 PI series on them, and when I received for free 6x 2BG G.skill PC12800 NQ series I wanted to ...
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428
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How to get a "picture" of the computer cpu/disk activity while in a fullscreen application
I have a small issue on my computer.
From time to time, it seems like some process is turning on, maxing the cpu and disk activity for 10-15 seconds, and then stopping. This usually occurs while I'm ...
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About Connection Speed
I have this problem for months and I couldn't solve this. It's really weird problem for me.
I have a cable modem NetMaster and additionally TP-Link Router (to extend wireless area).
There are three ...
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2k
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slow transfer of data from disk to disk
I'm copying about 4TB of data from one hdd to another and noticing abysmal speeds.
I have two external SATA 3 hdds plugged into USB 3.0 docks and connected to USB3.0 ports on Macbook Pro. MBP was ...
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407
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How to automatically store DNS entries locally after first visit, for for privacy and speed reasons? [duplicate]
My set of websites that I visit regularly is not very large. In order to increase privacy, I'd like to visit these sites directly without the need of a remote DNS resolve each time I visit it, but I ...
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Centos running very slow in Virtualbox
I am running Centos 7 in Virtualbox 4.3.14. The VM is configured with
2 CPUs
4 GB RAM
3.10.0-123.4.4.el7.x86_64 kernel
The host machine is running
Windows 7 Pro SP1 64-bit
Intel i7-4790 CPU, ...
- 200
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3
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890
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Network speeds degrade with time
I bought an Asrock AM1B-ITX motherboard. It is working great, except for the wired download speed. When the machine boots up, it is close to the maximum the ISP provides me, but within a few hours it ...
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6k
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How to force the Linux kernel reclaiming cache memory rather than using swap?
I have a PostgreSQL-driven web service on two Debian servers, one a vhost running Linux kernel 3.2.0-2 with 2GB RAM and the other a dedicated server running Linux kernel 2.6.26-1 with 6 GB RAM. ...
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The more I use my computer the less it lasts?
I would like to know your opition about the relation between the following 2 variables and 2 outcome measures.
The variables are:
Time a computer/laptop is on, carrying normal tasks/processes (word ...
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3
answers
45k
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Why did adding memory significantly increase gaming performance on an AMD APU?
To be clear from the beginning, this is not a problem. This is just something that I really want to know the secret behind.
System specifications
CPU: AMD A10-6790K 4.0 GHz
GPU: AMD ...
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1
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16k
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Why does my computer run slow if it is not using most of its CPU or RAM? [closed]
I have two machines - a relatively cheap laptop and a high end desktop. My laptop sometimes runs slowly doing various tasks that would be quick on my desktop. My first guess is that I'm using most of ...
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431
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USB mouse incredibly slow on brand new laptop
Just purchased a Dell Latitude E6540 with a ~16" screen (Windows 7). The mouse is terribly slow, even after adjusting it in Mouse Properties (Pointer Options -> Motion -> Fastest). To move the mouse ...
- 2,562
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80
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Weird phenomenon about my PC's primary & secondary DNS speed
I use DNS Jumper to test the speed of various DNS and this is the result:
(A) Currently Using
Primary: 203.144.207.29 (39 ms)
Secondary: 8.8.4.4 (71 ms)
(B) US Open DNS
Primary: 208.67.220.220 (...
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2
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The CPU visible in Resource Manager are physical cores or logical processors?
The Resource Manager that pops out from Task Manager in Windows Operating Systems shows CPU consumption on the CPU tab for each of the different CPUs.
I get 4 CPUs on my tab. Are they all physical ...
- 650
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139
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OpenGL rendering affects CPU
I have a problem with an app that is slowed down significantly when an openFrameworks based app is launched. Both apps use little cpu and memory, so i don't think there's a bottleneck.
I can ...
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very slow internet connection
I have a netgear router and the internet strength says its excellent but when i try to play online on my xbox it is very slow and only have one bar connection. And i have noticed that when it goes ...
2
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2
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186
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Does cable length factor in on component performance? [closed]
This is completely hypothetical, and just something I've been curious about. I remember Grace Hopper on Letterman talking about correlating lengths of wire to nano seconds (a certain length of wire ...
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10
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Are computers with more RAM potentially faster if not all memory is usually in use?
Let's say I have a computer with 16 GB of memory. If my computer is usually only using about 4 GB and never reaches 8 GB, is it any faster than a computer with only 8 GB of (the same type of) memory? ...
- 1,151
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4k
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How to improve the wifi performance of openwrt
If my computer download through my tplink router, the speed is 10Mbps, if through openwrt router, it's 5Mbps.
Here is wifi information:
root@localhost:/etc/config# iwconfig wlan0
wlan0 IEEE 802.11bg ...
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501
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Sluggish Flash/HTML5 in Firefox 30.0
There are websites that have video playing back in the backround and removethebackground.com is one of those sites. This kind of effect slows browser's response almost to a crawl unless I switch to ...
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Linux: What is causing high interrupt activity for IRQ 23 (ehci_hcd)?
I run gkrellm to monitor my workstation. Total CPU usage usually runs 0-1% at idle; when there is activity, it's usually cyan-colored (user space). It was running clean this morning.
A couple hours ...
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25
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2
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14k
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Inkscape very slow to start up on Windows
I've noticed lately on my Windows 7 x64 PC that Inkscape (v0.48.4) is very slow to startup. Once the window becomes visible it will display "Not responding" in the title bar for a minute or two. Once ...
- 6,040
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78
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Understanding RAM vs CPU for basic tasks
I recently purchased a very cheap Android tablet; however, my question is actually device agnostic and my question applies to desktop PC's/laptops too.
It had 1GB RAM and 1.2 GHZ processor. It ...
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667
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Any realistic advantage of 802.11ac over 802.11n for a regular home connection?
I am using a 802.11ac Asus - 802.11ac Dual-Band Gigabit Wireless router. Don't have any complains yet but does it really matter to go from a $90 802.11n router to $200 802.11ac router?
In theory, max ...
- 1,364