An intermediate data storage area with high performance but limited capacity. The term "cache" can refer to hardware cache (on a processor) or software cache (which stores commonly used values in a computer's memory).

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1answer
2k views

Why do we need multiple levels of cache memory?

In general a cache memory is useful because the speed of the processor is higher than the speed of the ram (they are both increasing in speed but the difference still remains). So reducing the number ...
2
votes
2answers
168 views

Why does Spotlight omit some files in my search result?

I'm trying to use Spotlight (Mountain Lion) to do a recursive search on a bunch of subfolders. (It's actually the Firefox disk cache, and I'm pecking around for a few images, so I thought this would ...
5
votes
2answers
3k views

Too much RAM “in cache”

I am having the following problem: I am having a completely new Notebook with 8 GB RAM and Windows 8. I do not use software that requires a lot of RAM and I do not have a thousand programs running. ...
0
votes
1answer
253 views

Linux empty buffer cache command permission denied

I'm using the following commands to flush cache: # sync; echo 3 > /proc/sys/vm/drop_caches # sync; echo 2 > /proc/sys/vm/drop_caches # sync; echo 1 > /proc/sys/vm/drop_caches When I use ...
0
votes
0answers
77 views

How can I get Libre Office to stop storing my changes?

Apparently Libre Office is keeping old copies of my document in memory, because after systematically cutting a page at a time from a document (and pasting it into another one), the source document ...
1
vote
0answers
268 views

Is there a way to force caching of javascript / css with GET parameters?

There are some pages on the internet that I want to load as fast as possible, but caching of their dozens of javascript/css files is being thwarted by the presence of GET parameters on the resource ...
0
votes
0answers
330 views

squid cache is not working

I have configured squid for anonymous search and cache proxy. Initially it was working well, after two weeks it becomes slow(loading web page become slow) then again I had to looked into squid. I saw ...
2
votes
1answer
104 views

Windows Explorer doesn't show correctly the custom icon

I have an issue with a custom file extension that I've added in the registry, I've followed all steps, reviewed the .ico file path, deleted the associated registry entries and tried again, rebooting ...
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vote
0answers
72 views

Reload Browser Page (And Resources) Entirely From Cache

I'm currently working remote on a specific web project. Their VPN connection is quite unreliable, so it can be difficult to refresh a page because the database lies on one of their local machines. At ...
6
votes
1answer
13k 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?
0
votes
1answer
293 views

What does clearing “Active Login” does in Firefox

I don't understand the use of using "Active Login" option. Can anybody help?
0
votes
0answers
75 views

Windows 7 Home Premium transparently cache Synology NAS

How can I transparently cache a non-windows NAS on my Windows 7 home premium machines? The same content tends to get retrieved over and over but I don't know which content it will be in advance. ...
2
votes
3answers
2k views

Solid State Drives (SSD) to use as cache to another Hard Drive (HD)

I recently bought a 32GB SSD drive. As everybody knows, 32GB is nothing considering modern SO's like windows 8 or even windows 7 where only file systems takes the half of the whole space (about 15GB). ...
2
votes
1answer
1k views

Why is writing speed for RAM less than reading speed? And how do caches come into the picture?

Firstly, this is true, right? I feel that reads will always be faster than writes, also this guy here does some experiments to "prove" it. He doesn't explain why, just mentions "caching issues". (and ...
0
votes
2answers
2k views

Intel RST crashing! IAStorUI unstable in win 8.1

I have a Z87E-ITX Asrock mobo. Using a new 64G Corsair SSD as cache and a new Western Digi Black Scorpion 750G 2.5" drive. Using windows 8.1. Latest software or not, I can't open Intel RST software ...
2
votes
1answer
2k views

Is there fusion drive style solution there for Linux and Windows?

Is there fusion drive style (like in iMac where the SSD acts as storage space rather than cache) solution there for Linux and Windows?
1
vote
1answer
2k views

ExpressCache not working after Windows 8 reinstall on Samsung Series 7 Gamer

I have a Samsung Series 7 Gamer laptop which came with Windows 8. After doing a reinstall of Windows, the ExpressCache software is no longer caching. Running "eccmd -info" shows me that the software ...
3
votes
0answers
192 views

why Safari always GET status 200, never 304 for my .swf file?

I serve a Flash app as a .swf file (with HTML wrapper file), and Safari always retrieves with GET status = 200, never 304. Thus, Safari never uses cache for this file and downloads it each time (it's ...
1
vote
1answer
121 views

Computers with Small Capacity SSD - For caching?

Recently, in newsletters from websites, I have been seeing computers for sale from manufacturers that include an HDD and an SSD but the SSD has a small capacity like 24 GBs. I don't know if this ...
5
votes
5answers
692 views

SSD cache to minimize HDD spin-up time?

short version first: I'm looking for Linux compatible software which is able to transparently cache HDD writes using an SSD. However, I only want to spin up the HDD once or twice a day (to write the ...
1
vote
1answer
180 views

Windows DNS cache is NOT updating at all (other computers in home have updated)

I just spun up a new VPS, set it up with a fresh and clean LAMP stack and pointed my domain to it. I waited a few hours and tried it and it was still my old website. For a laugh, I logged into my ...
0
votes
1answer
1k views

How to calculate the size of the page table from this data?

A computer uses 46–bit virtual address, 32–bit physical address, and a three–level page table organization. The page table base register stores the base address of the first–level table, which ...
0
votes
1answer
89 views

Why are thumbs.db files stored within the directory they refer to?

I would have imagined that - being nothing more than a cache of thumbnails - thumbs.db files would have been stored in some dedicated cache area of the Windows filesystem: perhaps Explorer's app cache ...
2
votes
1answer
642 views

Make ReadyBoost cache more aggressively

I have always had a 32GB high-speed Transcend SD card in my laptop for ReadyBoost, but it isn't very helpful because Windows isn't making heavy use of it: the cache size is usually 2 GB or less and ...
2
votes
1answer
665 views

Clear cache of virtual machine

I already posted this on StackOverflow, but it was flagged as Off-Topic. Maybe you guys are able to help me. I'm currently doing some database benchmarking on a virtual machine running Ubuntu 12.04. ...
6
votes
1answer
7k views

Why SRAM is faster than DRAM?

In modern multi-core processors, the processor caches (L1,L2 and L3) are made up of SRAM with decreasing speeds(L2 caches are higher speed SRAM than L3 caches which is a cost trade-off). The main ...
2
votes
2answers
465 views

Do USB memory sticks have controller and disk-cache on-board?

I'm well aware that the spinning-platter type of hard-disks have an on-board controller and an onboard disk-cache. Now, does the 'disk'-cache also exist on a (4- or 8-GB) USB stick? Incidentally, ...
2
votes
0answers
41 views

Can the contents of caches using non-volatile storage (i.e. SSDs) get used after a machine reboots?

When caching with a non-volatile medium does data that was used the last time the machine was powered on get used again? For example would a SSD configured using SRT still hold the contents from the ...
7
votes
1answer
365 views

Make Firefox cache a webpage so that I can view it without a reload after a restart

I want Firefox to be able to cache webpages such that I can read the pages later after a restart. I've tried setting the cache size to 350MB but it still doesn't work as intended. Opera seems to do it ...
0
votes
1answer
740 views

Virtual memory (caching) on Windows 8

I have read a bit about the issue, and I understood that the OS constantly pushes memory to the disk, so later, when another application needs a lot of RAM, it allocates that memory to it and "moves" ...
2
votes
2answers
1k views

“This website is asking to store data on your computer for offline use”

Whenever I visit some websites using Firefox, I get the dialog below asking me to "store data on your computer for offline use". It is displayed if I am using Firefox but not if I am using Chrome. ...
1
vote
1answer
141 views

Recovering Firefox cache?

How can I recover a page that has expired from the Firefox cache? Long story short, I have a private server at localhost that I run. I had two pages (important essays I wrote) that I basically ...
0
votes
0answers
337 views

ECC on harddisks

I have completely re-written my post here as I noticed I was a bit unclear before. In an older post the user sawdust explained very well that there is an SRAM buffer on the HDD controller which uses ...
1
vote
1answer
962 views

Accelerate tab missing after reinstall

I had SSD caching enabled and working without problems, but I had to reinstall my Windows 8 and now can't reenable it, because the tab is missing. I have read many similar threads and tried all ...
1
vote
1answer
2k views

which of the following memory has the shortest access time?

which of the following memory has the shortest access time? Virtual memory Cache memory External memory Register When I try to select the correct answer, I feel like it must be cache memory ...
0
votes
1answer
51 views

Is it possible to disable implicit connection cache while using connection pooling in Oracle OAS?

Hi we are using implicit connection cache under Oracle Application Server (http://www.oracle.com/technetwork/topics/oc4j-ds-083633.html). I am not a system guy, I am just a programmer but I just ...
2
votes
4answers
1k views

Firefox changing tabs is slow

How can I diagnose the problem behind the delay I get when changing tabs in Firefox? It is up to about 1.5 seconds. To provide some background, I use three monitors and often have three Firefox ...
0
votes
0answers
193 views

memcached issue on multi-core windows server with virtualization

i am having an issue running memcached (v1.4.4) on multiple cores. Here's my environment: Windows Server 2008 R2 SP1 running VMware, Intel Processor, only one core (out of eight) is enabled for the ...
0
votes
1answer
70 views

Windows XP - what is the best way of implementing a file cache on a shared internet connection

In the early days when we were on dialup, in order to share the internet connection we ran a program called Wingate on the PC that acted as a gateway, and on all the clients. Wingate had a file cache ...
2
votes
1answer
615 views

Keep GnuPG credentials cached for entire user session

GnuPG can, with gpg-agent, cache access to a private key. How can I keep that cache active for the entire user session? When I unlock the key for gpg-agent, it only stays cached for a limited time. ...
1
vote
2answers
3k views

Why doesn't “ipconfig /flushdns” completely wipe your DNS?

I've consistently had a problem where "ipconfig /flushdns" + restarting computer doesn't get rid of all the DNS records. Should it completely flush any and all records in DNS? Why doesn't it usually ...
1
vote
3answers
9k views

When streaming a song, in what folder does the song get saved?

When streaming a song, the song is downloaded and placed into a temporary folder on the computer, that much I know. However, while streaming the media file – mostly from Pandora – I have been ...
1
vote
1answer
172 views

Does Chrome reloadButton ignores the cache?

I am using Chrome and monitoring the http connections. I load a page and the response returned by the server contains Cache-Control: max-age=86400 Expires: Thu, 18 Jul 2013 14:51:22 GMT Therefore, ...
0
votes
1answer
420 views

How to crawl your own website to save to cache

I'm using Squid, a caching program, to cache my website. However to do so it appears that each page has to be accessed at least once before Squid can cache it. My question is, is there a program which ...
0
votes
0answers
284 views

Setting up mSSD caching on Acer M3-581TG

Apparently the Acer M3-581TG supports some kind of caching using its 20GB internal SSD. I reformatted the hard drive to get rid of all the crapware it came with, and I can't seem to get this feature ...
1
vote
1answer
58 views

“Who” decides whether to use a webpage from cache or from the server?

When browsing to a website, "who" makes makes the choice of determining whether to pull a webpage from the local cache or from the server? Is it the browser? Web server? Webpage-specific coding? How ...
3
votes
1answer
261 views

How can you tell when the browser is retrieving from a cache?

Is it possible to tell when a browser is retrieving a page from a cache? I've thought that opening a new tab and directly browsing to the URL would make a fresh pull request from the server, but ...
0
votes
2answers
945 views

disk write cache buffer and separate power supply

Windows has a setting to turn off the write-cache buffer (see image) Turn off Windows write-cache buffer flushing on the device To prevent data loss, do not select this check box unless the ...
0
votes
2answers
974 views

Mac OS X Finder: Folder Color Labels are not staying across computers on connected to SAN

I'm trying to label certain folders on a SAN drive, however certain computers can see these colors and others cannot. I'm curious if there's a way to clear the finder cache for the color labels, as ...
3
votes
1answer
328 views

Making TT-RSS cache images

Due to Google Reader's untimely demise, I've installed tiny-tiny RSS on my Linux machine under Apache 2. It's mostly a good enough replacement and I can at least go back to reading RSS feeds in my web ...