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

learn more… | top users | synonyms (3)

0
votes
0answers
11 views

Linux, vim and ssh: why is vsplit slow?

As soon as I have more than one file visible with a vertical split (= :vsplit) the moves and screen refresh become sluggy. I've noticed that on many different Linux systems (old and my very recent ...
0
votes
2answers
24 views

Is there a good computer hardware performance monitoring interface for Windows 8.1?

FYI, this is my first post on SU: I'm looking for something that either sits on my Start menu and/or my desktop and shows me live hardware performance statistics. I'd like to see CPU usage, RAM ...
-2
votes
2answers
49 views

Why is my computer slower now than it was when I bought it after a clean installation?

I've just reformatted my home PC. It's an i7-920, 16GB RAM machine (so it was pretty good back in the day). I've installed a clean installation of Windows 7 and I'm wondering why the PC is much ...
0
votes
0answers
35 views

Computer became slow recently

System Specs: Windows 8.1 64-bit Intel Core i7-4700MQ CPU @ 2.40GHz, 8.0GB RAM, Intel HD Graphics 4600 / NVIDIA Geforce 750M GT Computer has been recently slow. This includes startup ...
1
vote
1answer
44 views

What are the differences between “scientific GPUs” and “gaming GPUs”?

I am currently working with neural nets and I recently made my code much faster by configuring a framework correctly to make use of a GPU. The GPU that is used is a Tesla C2075, which is part of the ...
0
votes
0answers
12 views

My System speed seems slower than the components would predict

I run an Intel 4770k CPU overclocked to 4.6 GHz, 32 GB G-Skills DDR RAM, primary boot drive Samsung 840 SSD, 10 TB auxiliary drives, 3 GB Radeon video, 1000 W PSU, Zalman GS 1200 case with Windows 8 ...
0
votes
0answers
23 views

How can I improve the performance of my audio software?

I am running OtsAV on Windows XP. The way it works is by buffering a small amount of data from the hard drive just before it needs to play it. It used to give flawless sound no matter what else was ...
0
votes
1answer
15 views

SSD Setup OS/Programs/Documents

I am trying to configure a new computer using SSD's. Am leaning toward the following configuration: 1) SSD of about 120GB solely for OS 2) SSD of about 120GB solely for programs I would use (MS ...
1
vote
1answer
35 views

“Disk” always at maximum usage

I recently opened up my laptop to fix a faulty power connector. Since then I have noticed my disk usage (not sure what it actually corresponds to) has been very high, as in the screenshot below: (Note ...
0
votes
0answers
19 views

Low Memory Performance

I am currently benchmarking some of my code to see where the bottleneck is. My memory is DDR3 1066MHz DualChannel Mode This should result in 17GB/s peak memory performance. With my code I am ...
1
vote
0answers
26 views

Slow Windows Application Startup

I have Windows 8 Pro/i5 3320M laptop with 8GB memory. Java based applications such as Eclipse, Phpstorm takes about 15-30 mins to load. (i assume issue is with java apps, others work fine). I tried ...
0
votes
0answers
35 views

ext4 vs btrfs performance on SSD array

I am observing something that I cannot explain. I am trying to come up with a good filesystem configuration using HP P420i controller and SSDs. Out of curiosity I have tried BTRFS (still unstable so I ...
0
votes
1answer
14 views

Asus N56VB-S4016H disk response time

We recently bought 3 Asus N56VB-S4016H laptops, and although the specs are great for the price it costs, we are experiencing similar issues on all 3 of the devices. After startup, a cold boot or from ...
0
votes
2answers
34 views

Does writing to SSD influence SSD Read spead?

I use my SSD to read and write at the same time, and I found that writing influences read performance quite a lot. Example: Without write, my read may be X MB/s, but with write, my read became 0.5X ...
-1
votes
2answers
44 views

How much faster is SSD compared to regular hard drive?

http://www.seagate.com/internal-hard-drives/solid-state-hybrid/desktop-solid-state-hybrid-drive/ Some says that using hybrid drive is 4 times faster. Some says it depend on data read. SSD is only ...
0
votes
0answers
25 views

why is my sort slower with more ram?

System specs below. I recently purchased 2X4 RAM: Corsair XMS3 8 GB (2 x 4GB) 1333 MHz PC3-10666 240-Pin DDR3 Memory Kit CMX8GX3M2A1333C9 I already had 2X2 in there for a total of 12GB: Corsair ...
0
votes
0answers
9 views

Why does top and Google Compute Engine give me two totally seperate cpu % values?

So to preface this, I haven't done much in Linux since a decade ago when I was in college, so I may just be doing something stupid. However, for this project I am working on I'm performing a load ...
0
votes
0answers
27 views

What is fastest way to backup a disk image over LAN?

Sometimes I boot sysrescd or a similar live linux on a PC to backup the hardrive over local network to my server. I noticed many times, that the transfer speed is not optimal (slower than HDD and ...
0
votes
0answers
9 views

Rail's FileStore with Linux Disk Caching or RAMdisk?

I have a Ruby on Rails application that stores it's catched files on the filesystem (Rails file-system cache). I was thinking about changing to memcached Store, but a short test shows it isn't a big ...
-1
votes
1answer
27 views

Installation Optimisation With Limited SSD Space

Tomorrow, I need to rebuild a windows 7 machine due to various issues. It currently has a 500GB HDD as the primary drive, with a 120GB SSD. As a developer, I need to keep as much space free as I can ...
-2
votes
2answers
50 views

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 ...
0
votes
0answers
33 views

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 ...
0
votes
0answers
18 views

Will IIS8.5 do a better job for WebDAV data sharing than Apache in terms of performance and file locking?

Right now I am using Synology's built-in WebDAV function, which I think is based on Apache server. The issue i am having are basically slow transferring speed and missing file locking ability. The ...
0
votes
1answer
34 views

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 ...
0
votes
1answer
43 views

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, ...
0
votes
3answers
81 views

Lenovo Y50 laptop does not perform well when Discharging [on hold]

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 ...
0
votes
1answer
14 views

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 ...
0
votes
0answers
26 views

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 ...
0
votes
2answers
39 views

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 ...
2
votes
0answers
40 views

Would a powerful enough D-Wave system (quantum computer) be enough to reach over 50% of bitcoin?

Bitcoins computational power is about 64 exaFLOPs. The most powerful supercomputers don't even reach one of those exaFLOPs. D-Wave, unknown as I couldn't google it, but I read that it is 3,600 times ...
1
vote
0answers
20 views

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 ...
0
votes
0answers
66 views

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 ...
0
votes
0answers
27 views

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 ...
0
votes
1answer
30 views

How to identify hardware performance bottleneck in laptop?

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 ...
1
vote
0answers
6 views

How do I ask for clarification on an existing answer if I am very new? [migrated]

Request Please do not close the question before you read it in full My PC became very slow while booting and I wanted to know why? I google and find this interesting answer How to diagnose slow ...
0
votes
0answers
27 views

Windows 8 notebook, 100% disk activity

I don't know what is happening, i have spikes in which the disk activiy goes up to 100% for 10 secs, once every minute or so. During those events I cannot see any process writing or reading from disk ...
0
votes
0answers
30 views

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 ...
-2
votes
1answer
46 views

Choosing PC components for high performance calculations

What is the best practice to choose the components of the PC targeted at some "heavy" calculations? In particular, one might expect some compilers to be optimized for some CPUs better than anothers; ...
-1
votes
1answer
19 views

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 ...
0
votes
0answers
7 views

mksquashfs performance depends on CPU load?

I'm trying to realize is mksquashfs performance depends on CPU load? While I'm compress the same data, i'm always get different by md5sum archives. Is this persist in compression size of archive? ...
0
votes
1answer
22 views

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 ...
0
votes
0answers
47 views

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 ...
0
votes
1answer
24 views

Picking the right ram [duplicate]

I informed myself of picking the right ram, but there are still questions. I am currently running a AMD Phenom II x4 965 (Black Edition) on an ASUS M4A87TD EVO. I'm planning to switch my core as soon ...
0
votes
1answer
64 views

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 ...
1
vote
5answers
265 views

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 ...
0
votes
0answers
10 views

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 ...
0
votes
0answers
20 views

Clock vs Cache in Gaming

I'm curious, I have two processors laying around that I won't name due to the rules of this site, however, one of them is Quad-Core, with a 12MB L2 cache and a clock speed of 2.67GHz. The other is ...
0
votes
1answer
39 views

CPU usage drops dramatically

I am using an engineering software to conduct series of computationally demanding analyses. I have a relatively powerful desktop with the following specs: CPU: Intel core i7 3930k @ 3.2GHz RAM: 64 GB ...
0
votes
0answers
4 views

Analyse performance / profile Android System? Why is the system slow? [migrated]

My Android 4.2.1 tablet is slow, it wasn’t when purchased. As the reason is often the software, I was looking for a tool to analyse the performance of the whole system, but couldn’t find any. What I ...
0
votes
0answers
28 views

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 ...