Anything related to disk-like storage media, like hard-disks, CDs, DVDs, etc. By extension it could be applied to other mass storage media that are commonly referred as "disks", like SSD, flash cards, etc.
Questions tagged [disk]
1293 questions
119
votes
9 answers
Clear file cache to repeat performance testing
What tools or techniques can I use to remove cached file contents to prevent my performance results from being skewed? I believe I need to either completely clear, or selectively remove cached information about file and directory contents.
The…
Stephen Denne
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85
votes
4 answers
Internal and external fragmentation
Can anyone please tell me the difference between internal and external fragmentation while allocation of disk space for files?
wantobegeek
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84
votes
8 answers
NodeJS How do I Download a file to disk from an aws s3 bucket?
My goal:
Display a dialog box prompting the user to save a file being downloaded from aws.
My problem:
I am currently using awssum-amazon-s3 to create a download stream. However I've only managed to save the file to my server or stream it to the…
gbachik
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73
votes
5 answers
How to purge disk I/O caches on Linux?
I need to do it for more predictable benchmarking.
taw
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73
votes
3 answers
Is it safe to delete the journal file of mongodb?
If I delete the 3.1G journal file, sudo service mongodb restart will fail. However, this file is taking too much space. How can I solve this problem? How can I remove it?
bash$ du -sh /var/lib/mongodb/*
4.0K _tmp
65M auction_development.0
128M …
user94602
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67
votes
1 answer
Difference between sequential write and random write
What is the difference between sequential write and random write in case of :-
1)Disk based systems
2)SSD [Flash Device ] based systems
When the application writes something and the information/data needs to be modified on the disk then how do we…
Kaizen
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57
votes
6 answers
How much faster is the memory usually than the disk?
IDE,SCSI,SSD,SATA or all of those.
lovespring
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55
votes
4 answers
How to check remaining space in storage device EC2
I've connected to amazon Ec2 instance through putty.
How can I check the remaining space in instance?
user3917663
50
votes
6 answers
How do I retrieve disk information in C#?
I would like to access information on the logical drives on my computer using C#. How should I accomplish this? Thanks!
leo
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42
votes
10 answers
How to find the amount of free storage (disk space) left on Android?
I am trying to figure out the available disk space on the Android phone running my application. Is there a way to do this programmatically?
Thanks,
Ashwin
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39
votes
8 answers
Visual Studio 100% disk usage
I have VS 2013 and Microsoft Windows 8.1
The issue appeared at the ending of last week. Without any updating or important changing, when I do somethings in VS, disk usage reaches 100%. For example, when I click on "Check In" button in the "Team…
Merta
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36
votes
9 answers
Is there any way of detecting if a drive is a SSD?
I'm getting ready to release a tool that is only effective with regular hard drives, not SSD (solid state drive). In fact, it shouldn't be used with SSD's because it will result in a lot of read/writes with no real effectiveness.
Anyone knows of a…
smartins
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33
votes
2 answers
What is a sparse file and why do we need it?
What is a sparse file and why do we need it?
The only thing that I am able to get is that it is a very large file and it is efficient(in gigabytes). How is it efficient ?
Luv33preet
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32
votes
1 answer
How to lay out B-Tree data on disk?
I know how a B-Tree works in-memory, it's easy enough to implement. However, I don't know how to find a data layout that works effectively on disk, such that:
The number of entries in the B-Tree can grow indefinitely (or at least to >…
Martin Häusler
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32
votes
5 answers
Manipulate an Archive in memory with PHP (without creating a temporary file on disk)
I am trying to generate an archive on-the-fly in PHP and send it to the user immediately (without saving it). I figured that there would be no need to create a file on disk as the data I'm sending isn't persistent anyway, however, upon searching the…
ralokt
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