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

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2answers
488 views

Computer goes super-sluggish but Task Manager shows no CPU usage

At times, for instance after running a resource-intensive program, my normally quite stable Windows7 PC becomes virtually unresponsive for as long as a couple of minutes. Even changing directory in ...
0
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0answers
37 views

HP Z-600 Workstation does not use all RAM or cores

I have an HP Z-600 Workstation running on Windows 7 Professional w/ a NVIDIA Quadro 4000 Graphics Card, 48 GB RAM and (2) 6-core processors for a total of 12 cores. When I perform a heavy operation ...
0
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0answers
300 views

Windows 8.1 double cpu usage and very slow

I have several computers of identical spec (1.9Ghz i5 scaled to 1.3, 8gb ram, 256gb ssd) running windows 8.1 (installed directly from an 8.1 cd, not upgraded) but since yesterday one has been very ...
0
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0answers
67 views

OCZ RevoDrive X2 runs at half speed

I have a OCZ RevoDrive X2 128GB in RAID 0 mode (two 55GB partitions) installed on my P55A-UD3 mainobard. I installed a fresh copy of Windows 7 64 bit and provided the OCZ drivers during install. When ...
0
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2answers
56 views

Playing music while compiling code lags the music, what kind of laptop CPUs avoid this? [closed]

When I play music while compiling code on my laptop (Intel Core 2 Duo T8300), the music stutters and lags. In terms of laptops, what Intel CPUs are capable of compiling without interruptions in my ...
1
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0answers
838 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
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1answer
258 views

Grunt on virtualbox is extremely slow when editing files from shared folder's host machine

My setup consists of a virtualbox running Linux Mint 16 Mate as the guest and Windows 7 as my host. I am running bridged network types although this problem occurs on any network type I choose. I am ...
0
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2answers
52 views

Is there a way to build cluster machine that behaves like a single PC? [closed]

Is there some way to build a cluster from several desktops in such a way, that it can run an unprepared application and be seen as just a multicore CPU? I understand it will be a lot slower than ...
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votes
1answer
800 views

Windows 7 x64 3.2Gb RAM usable instead of 4Gb installed [duplicate]

I have two questions that bothers me, and for which I couldn't find an adequate answers here. This is my laptop's configuration: HP Probook 455 G1 (Windows 7 Ultimate x64) AMD A8-4500M - 1.96Ghz ...
0
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1answer
40 views

Massive slowdown in HDD

I was running a multi-threaded program that makes huge amount of I/O operations, Basically reading/writing Millions of files. I had some problems/bugs and I used to halt the program to fix something ...
1
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0answers
36 views

Windows boot performance - 52 seconds to initialize drives?

I had an issue with my primary SSD and I replaced it with another from a different brand, and at the same time I reordered my other 2 mechanical (C=ssd, D & E=mechanical). Now, when I load ...
0
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1answer
52 views

Will I see an increase in performance if I use Windows 7 Professional over Home Premium? Regarding multiple physical cores

I have 2 physical cores and Home Premium specs say it only recognizes one but Pro recognizes multiple. If I swap out my Home Premium with Pro will I see an increase in performance? I have an Intel i5 ...
1
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0answers
47 views

some programs running much slower after mscvrt runtime redistributable delete/reinstall

UPDATE: It appears that there may have been an unfortunate coincidence. It seems that right around the time I was doing these builds and deletions of redistributables, my laptop power adapter was ...
0
votes
1answer
95 views

How to Find the Bottleneck when Transferring Files over WAN

This question may be a little too broad, but I'm looking for some methodology to identify a transfer speed bottleneck. I'm using rsync to transfer files between 2 NAS devices (DNS-323 to be specific) ...
0
votes
2answers
97 views

Ubuntu 13.10 - make eth0 or wan0 interface upload/download into slow motion for testing software

I have a software where i need to test by making some low speed internet, very limited upload/download, after some time auto disconnect and reconnect such scenarios. I have found that i can try wanem ...
4
votes
1answer
169 views

High I/O system hanging

I have a Fedora 20 box that i'm trying to import a massive amount of data in to postgres on (billions of rows). System spec: 16GB RAM, 6 core 3.2 ghz, 500GB RAID0 PCIe SSD Everytime I/O load gets ...
1
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0answers
114 views

Java (SE) program execution is too slow on Debian Wheezy… do I need to “tune” the JVM?

SuperUsers. I wrote a desktop program to execute a simulation process (not worth copying the code here... it's quite a long program). If I run it on a MacBook Pro (Intel Core i7 2.2 GHz, 4GB RAM), it ...
0
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0answers
37 views

Will Linux select the fastest CPU in a SMP system

In a system with for example two physical CPU's, four cores per CPU. If one physical CPU is slower (lower clockspeed, other model) will the Linux process scheduler be smart enough to migrate a high ...
1
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0answers
244 views

LSI SAS 2308 MPT2SAS Linux Read/Write performance

LSI SAS 2308-8e (6Gb/s per Lane) PCIe 3.0 card. Average Read/Write Raw performance for 4 SSDs is very low around 430 MB/s (Expected 2 GB/s).I am having Intel Core i3 with quad cores and 4 GB RAM. ...
0
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0answers
47 views

Achieving very low network latency in Windows (<1ms)

I'm running windows server 2008 R2 on my server and I need to optimise my latency to a certain server, which is currently ~0.4ms (both servers are remote servers in the same datacenter). The server ...
-1
votes
1answer
21 views

Reducing disk usage on Lotus Sametime

My Lotus Sametime (8.5.2) freezes every few seconds, while reading/writing to disk. Process Explorer show heavy disk I/O. I suspect sametime writes logs and the antivirus locks the file while it's ...
1
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3answers
73 views

OS on spinning drive, programs on SSD, will I see performance gains?

My work laptop runs windows 7 professional on a 7200rpm drive, which I feel is a bottle neck. Two programs I frequently use (they are always open) are Netbeans and Outlook, which seem to enjoy ...
0
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0answers
66 views

VMware Work station is very slow and it cause Windows to freeze

I am using VMware Work Station V9 to run Ubuntu (The latest version) and it is very very slow. I have given it 20 GB Disk Space / 4 GB RAM / but it still runs very slow. My current machine has 16 GB ...
0
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0answers
28 views

Poor wireless performance after WiFi printer intstall & uninstall

A few weeks back I installed a Canon WiFi printer, which caused all manner of issues with my laptop's COM ports (see - Cannot Delete Unwanted COM ports - Windows 7). Unfortunately by the time I ...
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votes
3answers
116 views

Quad-CPU vs Dual-CPU AMD performance difference [closed]

important note: in this text - CPU is a CPU (processor, physical object) and CORE is a CORE (invisible, inside cpu)... Quad-CPU systems are expensive, and there is not so many information about them. ...
2
votes
1answer
86 views

Does running constant load help degrade life of a computer? (Ignoring heat generation)

I run Folding@Home on my laptop (2013 MacBook Pro, no GPU). I tried to convince a friend of mine to join me but he claims that running the program will degrade the life of the computer - making it ...
0
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2answers
110 views

Sometimes when I check my CPU usage, my 2nd CPU (#1) is stuck going around 90% while the others are around 20% max

i have checked the 'affinity' of all my processes and all of them are set to all CPUs, yet I check my CPU usage and my 2nd CPU (it's called #1 because my first CPU is #0) is jumping around 90% and ...
1
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0answers
145 views

Windows 7 hangs upon input events and opening sockets

I'm using a work laptop running Windows 7 64-bit Professional. The laptop is a Dell Studio XPS and has the following specs: Intel Core i5 M460 Quad-core 2.53GHz 6GB RAM ATI Mobility Radeon HD4670 ...
0
votes
1answer
341 views

Does SSD drive really speed up overall performance of computer?

Mostly when I talk to other people or check other discussions on forums, people insist that SSD ( Solid State Drive ) boosts overall computer performance big time. I however cannot fully understand ...
3
votes
1answer
228 views

Two 2TB drives, why is dd is almost 8 times faster erasing one?

I have two 2TB drives: /dev/sde WCD WD20EZRX-00D8PB0 Firmware revision 80.00A80 (new consumer-grade WD Green series) /dev/sdf WCD WD2002FYPS-01U1B1 Firmware revision 04.05G05 (old pro-grade server ...
0
votes
1answer
54 views

Windows7, defragment swap and hibernate file and move them to begin of hdd

I tried find any tool for windows7 that help me with defrag swapspace, and move them to beginning of volume. I have no option to create separate partition for swap only, because I have 4 primary ...
0
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2answers
76 views

Advanced RAM configuration [closed]

I'm a little unsure about whether my current BIOS ram settings are the optimal for the RAM i have. I'm aware some RAM modules may configure themselves with a bit slower speed by default than what they ...
2
votes
1answer
73 views

What does PCI (not PCI-E) bus speed of 66MHz really mean?

According to this article , the bus is the circuit that connects the motherboard . The faster the speed of the bus , the quicker data can be transferred . Bus speed is measured in MHz (Mega Hertz) and ...
0
votes
1answer
70 views

Optimizing Corsair SSD Windows 7

I am currently having a Force Series™ GS 128GB SATA 3 SSD which is supposed to have the following specs: Sequential Read Write 560 MB/s sequential read — 535 MB/s sequential write But, instead, I'm ...
0
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3answers
74 views

Normal CPU compared to Turbo frequency?

When I look at the Intel CPU's i5-4570T and i3-4340, the main difference seams to be Processor Number i3-4340 i5-4570T # of Cores 2 2 # of Threads 4 ...
3
votes
1answer
1k views

VMware Fusion performance degrading after few hours

I've been having an issue with VMware Fusion for some time now, where the VM (running Windows) runs fine initially, but will slow down to a grind after some time (best guess is a couple of hours). ...
0
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2answers
52 views

What is the main bottleneck for a personal offsite backup server

I want to host a personal cloud server on my network and am currently at a crossroads with hardware requirements for the server. My first thought was spend big bucks on a high performance machine with ...
0
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0answers
17 views

which processor has better performance [duplicate]

I am trying to decide between 2 laptops: The first is Acer, the second is Toshiba. Acer has Pentium Quad core N3520 processor and Toshiba has Core i3 2370M. Intel's comparison chart shows that Quad ...
1
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3answers
100 views

Why do compilers have to be “smarter” for RISC instruction set architecture

Reduced Instruction Set Architecture (RISC) aims to reduce the number of instructions thereby improving performance . The only downside to this approach is that the compilers have to be "smarter" . ...
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votes
2answers
42 views

How does fabrication process and compiler quality affect CPU performance

I was reading up on my lectures and one of the slides listed down the factors affecting CPU performance , I cant understand how does fabrication process and compiler quality affect CPU performance
1
vote
1answer
115 views

How do you measure GPU throttling?

How do I determine or monitor when and to what extend my GPU throttles due to thermal constraints? Is this data available natively in logs or do I need to run a separate program beyond what is ...
3
votes
1answer
131 views

Windows 8.1 Maintenance: What is the “.Net Optimization”

Windows 8 and 8.1 (Professional 64-bit in my case) has an automatic maintenance mode that it periodically runs. You can see that periodically when one of the system tray icons changes appearance and ...
0
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0answers
17 views

Need an application that takes a few seconds to test some speed up techniques

there is this ARM9 SAM9G25 embedded device, which I like to improve its performance. I'm using Buildroot 2013.10 to generate the bootable Linux 2.6.39 images. There are some methods I'd like to apply ...
1
vote
1answer
130 views

Performance SATA 1.5Gb/s controller and SATA 3Gb/s harddisk

Afaik it's no problem to use a SATA 1.5Gb/s controller with a SATA 3Gb/s harddisk (spindle, non-SSD) due to SATA backwards compatibility (ignoring Force150/OPT1 issues for now). To my understanding ...
1
vote
2answers
52 views

How to diagnose right-click menu slowness?

Is there a way to find specifically what's causing Windows 7 explorer slowness, like right-click menu delay and even opening new explorer windows/drives/folders? Slowness when opening new explorer ...
0
votes
0answers
79 views

Games in windowed mode lag (with AMD GPU)

Before I start, I tested the latest beta and the latest stable (as of now) drivers, both had this problem. The problem is also not specific to any game, like it happens in Battlefield 4 and Trine 2. ...
1
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0answers
61 views

Performance Issue in Google Earth [closed]

My current version of Google Earth runs poorly and I'm not sure why. Often when exploring around, it stutters terribly. If I launch the flight simulator, my frame rate is out of control. I never had ...
0
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0answers
28 views

Why does secondary hard drive IO slow down the entire system?

I have a two-drive setup: an SSD drive for Windows and apps (C:) and D: drive for code and databases. I noticed that while running an IO-intensive operation on the D drive (SSIS), the entire system ...
0
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0answers
153 views

Very slow loading gifs on Linux/Mac OS X

I've tried a lot of browsers on windows, linux and mac os x. Same gif-pages that loads pretty fast on windows loads very slow on Linux (like 30+ seconds for page with 5 gifs). For example - tumblr, ...
0
votes
1answer
113 views

Powerful computer runs very slow for short intervals

I think this is the best place to put this question, but I'm not sure. Basically, my computer will run very slow every once in a while but then everything goes back to normal (for example, I will type ...