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

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5
votes
2answers
620 views

Recent RAM Issue with Windows 7 - Memory Slowly Fills Up

Before I say anything at all, I want you all to know where I've been with this issue: I have run multiple AV scans, including: Malwarebytes, Sophos Virus Removal, ADWCleaner, ESET Smart Security 4 ...
0
votes
1answer
55 views

What are the performance differences between SSD caching and native SSD usage?

I am looking at making some changes to my computer. I currently have a machine running on the X79 chipset and I am using a dedicated RAID controller. The controller is an LSI MegaRAID 9260-8i SAS / ...
0
votes
0answers
94 views

Causes of slow network connection between two Windows 7 computers on LAN but either Win7 and a Linux computer are not slow

I am experiencing slow (approx. 1 MB/s) transfer speeds on my home wireless network between two Windows 7 computers. Speeds improve when switching to Ethernet on both. This speed is being observed ...
0
votes
0answers
46 views

Really slow connection between wireless routers - wireless interference or something else?

I've got a bit of an issue with my home network. Three TP-Link WR1043ND V2 are used in the setup and the idea is to get a wireless signal to all three floors of the building. All three routers are ...
0
votes
0answers
53 views

Is there a way to make windows faster by making it use more RAM?

I use windows 8.1 OS. The bottleneck for my PC is my AMD A4 Processor(1.5Ghz x 4). However I also have 16 GB RAM. It works out fine for me because I generally tend to use a lot of RAM than CPU. ...
-2
votes
3answers
432 views

Why is there the Installed Memory: 4.00 GB & Available Memory ONLY: 536 MB - 2.20 GB

This is a desktop computer, the problem is the difference between the installed memory versus the available memory. I search everywhere, for a fix to this problem. Installed Physical Memory (RAM): ...
0
votes
0answers
22 views

mac book pro slowing down with age [duplicate]

I have a mac book pro that's about 4 years old. It's been slowing down. I tried to defrag the hard drive, but that didn't really help. I am using about 70% of the hard drive, but I haven't had a lot ...
1
vote
2answers
55 views

How to apply regex to large text file?

I have large text files (some mega) example and I would like to know how if there is a more efficient way to apply regex than to PyCharm or SublimText 2 on Mac OSX. Thanks. Comment: I want to ...
1
vote
0answers
59 views

Thousands of page faults per second while page file lies empty

So, in my office system, things are going crazy. Every thing was extremely slow, so much so that switching tabs on chrome took 10 seconds. So, I checked the performance monitor for the issues. ...
0
votes
0answers
12 views

Options for daily non-RAID data mirroring?

I'm considering setting up a storage box with an SSD and I want resilience in the case of hardware failure of that SSD. (I expect the box to run Ubuntu 14.04.) I have three reasons to consider ...
0
votes
1answer
71 views

windows 8.1 extremely long login

Hello I have just bought new computer. Asus g550jk. It came without Os, so i have installed win8.1 . It worked fine at the start but after few drivers and windows updates it developed very long login ...
0
votes
5answers
206 views

Why is my Mac slow?

I've started seeing the beach ball cursor on my Mac a lot lately, and I haven't been able to track down the cause. It happens even after restarting, with only a few applications running (basic stuff ...
0
votes
1answer
161 views

Does Intel Smart Response cache drive size matter?

I have a Lenovo Y400 laptop, that came with a 16gb Intel Smart Response cache drive. I also have an unused 64gb ssd drive lying around. I was wondering whether replacing the 16gb cache drive with the ...
0
votes
1answer
16 views

Network resources being called when no connections are configured

Some users were reporting awful performance in Excel 2010 when doing simple things like clicking a cell or changing sheets for many workbooks they use. I made sure there were no dead connections ...
0
votes
1answer
37 views

Why is oracle instant client so slow on OSX?

I have both a PC and Mac environment setup to connect to the same Oracle server. Both are using Oracle instant client 11.2.0.4 and are on the same network. Both machines are similarly configured ...
1
vote
2answers
66 views

Is it normal for uploads on ADSL to make the connection unusable (> 4000ms latency)?

I have an ongoing saga with my internet connection; where the latency periodically goes through the roof. In most cases, this seems to coincide with something uploading data. I'm not having a lot of ...
1
vote
3answers
172 views

Would it make sense to install Windows 8.1 on the HDD instead of the SSD?

Just about to setup a new laptop with a 128GB SSD and 1TB 7200RPM HDD. I'm thinking that most of the 30+ GB of Windows files are probably not accessed on a regular basis, so they don't need to take ...
0
votes
0answers
64 views

Difference in performance between ARM and “traditional” CPU on Raspberry PI example

I'm not sure if my question fits here, but I will give it a try since it does not seem to fit any other StackExcnhange. New day ARM processors are slower (if you look at MHz - 500MHz in RPi case). ...
0
votes
0answers
107 views

Windows 7 lag, google didn't provide any clues

I had Windows 7 running on my laptop without problems, then I bought a 240GB SSD and installed Windows 8 on it. I didn't like Windows 8 and it had compatibility problems with my motherboard (lower ...
2
votes
1answer
615 views

How can mainboards provide more PCIe lanes than the chipset?

I'm currently choosing parts for a new computer, with my main focus on high PCI Express speed and a large number of slots. In this iteration, I will probably choose a board with an Intel Z97 chipset. ...
2
votes
1answer
289 views

ls -l but not ls --color=never slow on nfs-mounted directory, if simulatenously writing to that directory

when I dump data into an NFS-mounted directory, reading files modes (e.g. ls -l) is several orders of magnitude slower than a plain file listing (e.g. ls --color=never). I would like to understand ...
0
votes
1answer
24 views

How do I find out what processes are accessing the SPECIFIC hard disk in Linux?

I have several hard drives and power save does not work for them. I would like to know, which process are probably accessing them. But I need to know this BY DRIVE, i.e. the thing what apparently ...
0
votes
4answers
368 views

Dell Latitude E6420 8GB memory showing as 3GB Windows 7 [duplicate]

This is what RAMMON is showing; Ram Type DDR3 Not Populated Maximum Clock Speed (MHz) 666.67 (JEDEC) Maximum Transfer Speed (MHz) DDR3-1333 Maximum Bandwidth (MB/s) PC3-42600 Memory ...
0
votes
2answers
70 views

CPU higher than maximum

Hi so I bought a new laptop with an Intel i7-4510U processor. Its max cpu it says is 2.0ghz(Which I thought was low). How is it running at +2.8ghz. Is this affecting its performance? Or is there some ...
0
votes
1answer
36 views

Can My ISP's Assigning me a New IP Explain Poor Performance on my Home Network?

I have observed numerous times that poor performance on my home network, which is infrequent and characterized by slow transfer rates (especially over wireless), is resolved by rebooting the router. ...
1
vote
0answers
154 views

How to achieve best browsing performance using Polipo?

I'm using Polipo to browse the web, I've set up the config file as follow (consider that I have 4 Gb of DDR3 ram, and my computer is quite fast): I've noticed that seems better if I disable the ...
2
votes
2answers
107 views

Could slowness/sluggishness at startup on a new MacBook be a hardware issue?

Symptom 1: After selecting region, the OS setup UI froze, I’ve researched, went back (took some time for UI to respond, like minutes), and continued setup, no slowness after that point (might have ...
0
votes
0answers
30 views

New Windows 7 workstation shows KSOD and extreme sluggishness; what gives?

I have been setting up a Windows 7 workstation: 4 GB RAM 1 TB SATA hard disk Core2 Duo CPU Intel GPU of quite recent make Windows 7 SP1 64-bit About 1/3 of the times it boots up, it never reaches ...
0
votes
0answers
34 views

100s of Reads vs 100s of Writes

Consider a pretty fast Hard Disk. I know many writes to a single disk will always be slower than many reads. For instance time taken to complete 100 write operations is much longer than time to ...
1
vote
1answer
273 views

Ubuntu Server 14.04 in VirtualBox: disk performance drops with more than 1 CPU

I'm running VirtualBox 4.3.18 on OSX 10.9.5 . I install Ubuntu Server 14.04 64bit and performed this basic disk write test: dd if=/dev/zero of=bigfile bs=1024 count=5000000 Setup of host (MacBook ...
0
votes
0answers
91 views

How to increase I/O priority of a zpool scrub (at runtime/without reboot)?

The speed of the scrub is not exceeding 5 MB/s for the first half hour (according to zpool status 2. The pool reaches 140 MB/s maximal and 50 MB/s for > 30 minutes. Watching iotop I see that txg_sync ...
-1
votes
1answer
104 views

Memory cards for tablets [closed]

I want to learn more about the terminology used in association with high-quality memory cards. For example, Class 10 is the fastest class available. Above this, UHS-1 makes it even faster. In ...
0
votes
4answers
900 views

How come my 7200 rpm external HD is slower than my 5400 rpm portable HD?

I have been reading and writing the same files on two external hard drives connected to the same computer, a 2011 MacBook Pro. I was expecting the 7200-rpm EHD to be faster than my 5400-rpm EHD, but ...
1
vote
2answers
493 views

Assuming a PC has plenty of RAM, will an ssd make web browsing significantly faster? [closed]

Assuming a PC has plenty of RAM (as many cheap laptops with HDDs do), will an SSD make web browsing significantly faster? Is an SSD a worthwhile investment for someone who's in google docs and gmail ...
0
votes
1answer
206 views

How do I optimize Windows disk I/O for high-latency throughput?

Let's say there are 25 processes each which want to read and index a large (say, 1GB) file. The hard drive may be capable of ~100MB/sec throughput, but the head movement and rotational latency ...
184
votes
10answers
33k views

Is there still a reason to choose a 10,000 RPM hard drive over an SSD?

For anyone who's serious about storage performance, SSDs are always the fastest solution. However, WD still makes their 10,000 RPM VelociRaptor hard drives, and a few enthusiasts even use ...
2
votes
1answer
40 views

Why does a CPU with lower frequency score better than one with more?

I've just seen this comparison of two differenc CPUs. The first one has 4.4GHz and the other one 2.5 to 3.5GHz. However, the one with the lower frequency scored better in the single-thread-rating ...
0
votes
1answer
55 views

Testing new (refurbished) SSD

I got a Corsair Force GS 128GB, and popped it into the "dock" integral to the case. It's a SATA connector going to one of the motherboard headers, like any other internal drive. After initial ...
0
votes
0answers
67 views

Improvement of transfer speed over afp shares

I was performing speed tests on my upgraded network, and i'm not getting all the speed i thought i could get across network shares. The tests i did between machines A and B (both running OSX Yosemite, ...
-1
votes
1answer
596 views

4-bay NAS write performance RAID 5 + SSD vs RAID 10

I am planning on buying a new NAS (QNAP TS-453 Pro) for my Home Office. The NAS has 4 HDD bays and supports SSD Caching. Hence, I was wondering which setup would probably be faster in terms of write ...
0
votes
0answers
186 views

Samsung laptop slowed down

I have a notebook NP550P5C from Samsung. It has impressive parameters: 8 GB RAM Intel i7 3610QM @ 2,3 GHz 904 GB HDD with 8 GB SSD It runs Windows 8.1 64bit. It used to be very fast but after 22 ...
1
vote
0answers
42 views

Windows 7, Hibernation Disaster [closed]

I think that I messed up my lap top after accidentally putting it into hibernation. I was at school and at the end of class I was putting my computer into sleep mode. Unfortunately I accidentally ...
3
votes
1answer
149 views

Why is my GPU not being fully utilized?

I happen to have two identical X201 Lenovo laptops, both with Windows 7 installed, latest drivers, etc. However, only one manages to run 3D computer games with decent performance. I have gone ...
0
votes
1answer
262 views

Why is the i7-5960x only 3.0Ghz, while the i7-5930k is 3.5Ghz?

Why is the i7-5960x only 3.0Ghz, while the i7-5930k is 3.5Ghz? I was really looking forward to the 8-core intel i7, until I saw the stock clock speed was lower than it's 6-core counter part. Is there ...
0
votes
0answers
179 views

USB 3.0 flash drive has slow performance after reformatting

I bought a USB 3 flash drive, and after a few weeks of using it (happily), I needed a bootable linux and that was the only thing handy. So I reformatted it and worked through all that jazz. But I'm ...
0
votes
0answers
37 views

Sudden sluggish performance of ubuntu system

since 3 days a very important system at my workplace started a most peculiar behavior. There is no internet connection on that PC and no updates have been made. When I started the PC 3 days ago after ...
0
votes
0answers
36 views

Processor never reaching maximum frequency

I have an Intel i7-3630QM which, according to both the adverts and /proc/cpuinfo, can go up to 2.40GHz per core. I ran cpufreq-set -g performance cpufreq-set -f 2400000000 And I'm running a ...
2
votes
1answer
145 views

Standard account in Windows 8 takes too much time to reach metro screen

I have a Windows 8 system in which there is an admin and a standard account. The admin account will take only 10-20 seconds to reach the metro screen during startup. While the standard account takes ...
3
votes
2answers
35k views

Service Host: Local system (network restricted) is thrashing hard disk

I am having windows 8.1 with update 1 installed and all release updates of windows till the date i am posting this questions. System is laptop, Core i3 with 6 GB RAM and 500GB hard disk. When ever i ...
1
vote
0answers
26 views

Assessing Performance in Process Explorer: Varying Block Sizes

I am trying to assess the performance of my scientific software using Process Explorer, with the files both locally on our blade server (Dell VRTx, Windows Server 2012) and over the network from ...