For questions concerning computer, or computer-related, performance. Please include metrics in your questions.

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6
votes
2answers
6k views

High CPU usage by dwm.exe when nothing is happening

Setup: Windows 7 Ultimate, running in a VMware box inside Windows 8, VMware Tools installed; VMware Workstation is the only application launched in win8). Aero is on. Starting a few months ago, on ...
0
votes
1answer
16 views

Windows 10 keeps messing up draggable window's content

Starting a few weeks ago, I suddenly got no window contents when I dragged a window around. Quick googling helped and I activated the Setting "Show window contents while dragging" in the virtual ...
2
votes
0answers
28 views

Win7 keeps warning me about “slow performance” and disables Aero & UI effects. It is decidedly wrong

In the last few days, Windows has started giving me warnings about "slow performance" and subsequently disabling Aero and all the UI effects. I'm getting this a few times a day. This is Windows 7 ...
0
votes
0answers
10 views

Windows 10 boot loader appears twice

My Windows 10 Pc was working fine, when suddenly I encountered this problem. When I boot my pc on, the boot-loader appears twice, first it finishes and then it comes again, and this time its very long....
-4
votes
0answers
25 views

CPU Issue - Now always at 100% usage [on hold]

Ok, after my PC crashed the CPU is always near 100%, after a reboot, normaly at 5% after a reboot, I Can't do anything!!! --- I know it's not a hdd issue because when pressing f10 the computer's rom ...
0
votes
0answers
69 views

Internet speed much faster than over LAN between PC's

I’m stuck and can't figure out how to get my speeds any faster, or figure out why my transfer speed is so slow between PC’s compared to from the Internet. Please be aware when reading this that ...
0
votes
1answer
18 views

bootcamp thunderbolt ethernet windows 10 slow

Lately I've been having trouble with my macBook Pro bought 2016. I have windows 10 in bootcamp and have connected ethernet cable through ethernet-thunderbolt adapter. When I start windows my internet ...
0
votes
0answers
23 views

Benchmarking network latency

I am trying to measure the latency of sending a packet. I do this as follows. The client sends recorded time. The server receives the packet and gives the difference between the current time and the ...
85
votes
5answers
17k views

Why are my games slower on battery power, even with the power plan set to High Performance?

My laptop is capable of running most games on high settings at decent frame rates. However, if the power cable gets unplugged while I'm playing, the game immediately starts slowing down, even if I'm ...
2
votes
3answers
3k views

Windows 8.1 takes 10 seconds to open file explorer from taskbar (not from start menu)

I open "This PC", and right click to to "Pin this program to taskbar". Now there's a shortcut to explorer in my taskbar, but when i click it, it takes around 10 seconds before the explorer window is ...
1
vote
1answer
4k views

Unusual and sudden slow login and lock screen in Windows 7

I have Windows 7 Professional on my laptop (since 2011, not updated). It was working fine, but suddenly the login screen has an unusually long please wait time, and lock screen takes about a minute or ...
84
votes
10answers
24k views

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? ...
5
votes
2answers
113 views

Windows Boot Manager works very slow

I want to reboot from Windows 10 into Linux from USB. I am doing it by restart with pressed shift key. But it is very slow. After press restart and shift together I wait more than 1 minute on black ...
0
votes
1answer
21 views

Xpenology (Synology) fast read speeds slow write speeds

For 2 years I've used a Xpenology server which has an Raid 0 volume and works perfectly fine. Gigabit read and write whitout any problems. Now am I installing a Raid 5 volume 3x4 tb WD red. I'm not ...
39
votes
2answers
18k views

Is there a way to identify the busy (CPU-consuming) tab in Firefox? [duplicate]

Sometimes there's a nasty, guilty, CPU-hogging tab in Firefox that's maxing one of my CPU cores and making the whole browser sluggish. I'd like to find it and close it. Sometimes I get lucky, but ...
78
votes
12answers
120k views

How can I produce high CPU load on a Linux server?

I’m currently in the process of debugging a Cacti installation and want to create CPU load to debug my CPU utilization graphs. I tried to simply run cat /dev/zero > /dev/null, which works great ...
27
votes
3answers
30k views

How to change I/O priority of a process or thread in Win7?

Process Explorer is able to show the effective IO priority of a given thread, but not change it. Seeing as IO priority support is a comparatively new feature, most programs don't set their own IO ...
0
votes
1answer
20 views

Very, very slow PC when power button is pushed on due multiple auto startup wares

I've got multiple background software that automatically popped-up during startup. Where is exactly the place to tweak this thing? Many thanks.
1
vote
1answer
10 views

Fortran Compiler Installation Instructions for OS X

I try install fortran compiler for Mac OSX El captain. Firstly; I install install_f2c_osx.csh Run installation script $ chmod +x install_f2c_osx.csh $ sudo ./install_f2c_osx.csh It gives this ...
0
votes
0answers
29 views

Why is my ssd's available space randomly changing?

I have a 250GB Samsung EVO 850 which currently has about 25GB free space. Once booted I can open My Computer and while doing nothing, watch as the free space randomly fluctuates until there is no ...
0
votes
1answer
33 views

CPU: Older Technique + higher benchmark scores vs newer technique + lower scores

I am searching for a new laptop. I've noticed that the newer i5-6200U (Skylake) is beaten by a i7-4700HQ (Haswell). Why does Intel produce lesser Skylakes with a high price instead of producing only ...
-1
votes
1answer
53 views

What is the Optimal Virtual Memory Size For 8 GB RAM | WIN 10?

I would like to ask experts that What is the optimal Virtual Memory Size For 8 GB RAM | WIN 10 and how you calculate? I know the system says 1906 MB is recommended but is it enough or I should set ...
0
votes
0answers
38 views

Slow SSD speeds when cloning disks?

I am making a disk-to-disk clone using CloneZilla where both source SSD and target SSD are connected to the computer using SATA-3. Both drives are from the same Vendor and have the exact same size ...
0
votes
0answers
12 views

Will I get ideal performance out of a hybrid SSD/Magnetic HDD if I clone it from an existing HDD?

I recently purchased a magnetic/SSD hybrid drive (Seagate ST1000DX001). I'm wondering if I'll get ideal performance from the drive if I simply clone my existing drive to my new one, or would it be ...
0
votes
0answers
16 views

Linux cpu usages high but clock speed is low

I am running a game server (ark survival if it matters) on Ubuntu Linux 14.04 and when the number of users connected increases the CPU usages also increases, which is as expected. But the clock speed ...
0
votes
1answer
230 views

Windows 10 file sharing on local wifi is horribly slow

As the title implies, when sharing a file / folder in windows 10 the connection is horribly slow. What I am essentially trying to do is to share a folder on one computer and access that folder and ...
2
votes
4answers
1k views

Windows 10 keeps showing 100% of CPU usage no matter what

I'm having a curious issue in my Windows 10 Pro 64: the task manager keeps telling I'm using 100% of CPU no mather what: it's just there, fixed, doens't matter which are the consumptions of the listed ...
3
votes
2answers
4k views

Very slow volume expand on Synology ds2413+

I've posted this elsewhere on the internet aswell, and will obviously reply in both places if a proper solution is found. I am attempting to expand SHR volumne (2x4TB, 1x2TB) with additional 4TB ...
0
votes
1answer
58 views

Mysql 5.7 vs 5.5: simple query takes 50 times longer to run

I have a database "algebra" with a table "questions" with 1,033,990 rows. The records have an attribute 'solved' that is INT. I have a simple query select count(*) from questions where solved = 0 ...
26
votes
4answers
10k views

Confirming that Windows 7 is using SSD optimizations

Took the plunge and installed Windows 7 on my computer. Even better, I installed it on my new Intel x25m (got to love that SSD goodness.) Vista was known to thrash, throttle, and otherwise wear out ...
16
votes
1answer
32k views

How to increase VLC RAM buffer for offline files?

I would like to configure VLC player to preload a significant portion (like a hundred megabytes or so) of a video file from the hard disk to RAM before playing it. Is this possible?
3
votes
2answers
3k views

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 ...
0
votes
1answer
55 views

Will increasing RAM of my laptop with Core i3 processor, from 3gb to 8gb, speed up my laptop?

I have a Dell Inspiron n5110. It has a Core i3 processor, and 3gb RAM. I have been told that I can install a maximum of 8gb RAM in my system. When I run Android Studio on it (while a Google Chrome ...
0
votes
0answers
22 views

Windows 8 feeling slow

I installed my Windows 8.1 x64 a few years ago. Usually I did re-setup the system once a year or so to make it fast again, but I don't have too much time for that right now. PROBLEM: The system ...
3
votes
8answers
11k views

Is that true that if you keep bulky files on the Desktop then Windows slow down?

A friend of mine keep telling me that if I keep bulky files on the desktop then Windows try to load them in cache and slow down? I'm (almost) sure that this is not the case but how can I demonstrate ...
1
vote
4answers
5k views

HP Probook 4530s great specs, but lagging. Hard Drive?

I have this laptop, which has a i3 processor, 4gb memory, 7200rpm hard drive. So there is nothing wrong with the specs. Even when I have no applications open, simply closing and opening windows, lags....
0
votes
3answers
4k views

CPU usage 99% constantly

My computer is running windows 8, and suddenly started running slowly. When I open the task manager, it tells me that the CPU is using 99% - sometimes the disk usages jumps up as well. The strange ...
2
votes
0answers
45 views

Chrome auto-fill saved passwords is very slow

I have been a Firefox user for more than 10 years; all my passwords are saved by Firefox password manager and protected with a master password. Now I want to move to Google Chrome (ubuntu 16.04), so I ...
3
votes
2answers
2k views

Gentoo LDFLAGS optimizations really needed?

I'm using Gentoo Linux. Here is my toolchain: sys-kernel/linux-headers-3.9 sys-devel/binutils-2.23.1 USE="cxx nls zlib -multislot -multitarget -static-libs {-test} -vanilla" sys-devel/gcc-4.7.3-r1:...
1
vote
1answer
27 views

Lowering APU Voltage increases performance?

I have an AMD APU (A6-4400M) and sometimes performance decreases when TurboCore increases Voltage/Clock speed. I use AMD Overdrive to manage Voltage and CPU Speed cause my fan gets crazy when reaching ...
4
votes
1answer
24k views

Calculate performance of RAM using timing and speed

if an 8gb DDR3 SDRAM 1600MHz has a timing of 8-8-8-24, how can I calculate if it will have a better performance than a 2x4gb DDR3 SDRAM 1866MHz with a timing of 9-10-9-28? Also, will a 2x4gb DDR3 ...
3
votes
4answers
690 views

Why is rendering PostScript much slower than rendering PDF?

I always thought that PDFs and PostScript files are quite similar, even though PostScript is a turing complete language. Is there a reason PostScript is a lot slower when rendering (tried with evince ...
18
votes
4answers
41k views

What is the cause of a high CPU usage of 'system and compressed memory' in Windows 10?

There is an observation to be made for Windows 10 on my laptop running with 24G memory available, and 2.5G used. There is no 'memory pressure'. Other questions have looked at memory consumption (...
2
votes
2answers
3k views

Remote Desktop software: Why is Teamviewer so much faster than the open source competitors?

TeamViewer is faster compared to FLOSS alternatives concerning 2 aspects: The whole configuration process before the actual session: Determine IP, traverse through NAT & firewall, etc whereas in ...
8
votes
4answers
6k views

Is there a way to know what program slow down startup?

Is there a program that can be installed to be able to know what program take time to load at startup of Windows?
36
votes
9answers
46k views

How to measure disk-performance under Windows?

I'm trying to find out why my application is very slow on a certain machine (runs fine everywhere else). I think i have traced the performance-problems to hard-disk reads and writes and i think it's ...
4
votes
3answers
11k views

PC running slow like molasses from BIOS to OS

A couple days ago I shut down and unplugged my Win 7 PC to change outlets on the power strip. It was running great with no issues or complaints. Startup times were like a minute at most and ...
3
votes
1answer
7k views

BootCKCL.etl file size & Session “Circular Kernel Context Logger” stopped due to the following error: 0xC0000188

I have a few regular / re-occurring errors in my event viewer which seem to be linked to logging upon boot and shutdown. I am running Windows 8 x64 professional. Event ID 4: The maximum file ...
2
votes
3answers
6k views

4 GB of RAM, only 2.67 GB usable

My laptop was using a 2 GB RAM and I thought it wasn't enough, so I bought a new 4 GB RAM stick. I have been playing graphic and memory-intensive games, such as Battlefield 4 (the Recommended ...
-2
votes
1answer
5k views

Why does computer slow down after not using for a long time?

I have a computer but I don't use it often (about once a month). Every time I turn on the computer, it slows down noticeably and the fan just gets louder and louder. It still slows down overtime even ...