Disk access is where a program reads or writes directly to a storage media. Use with the language tag you're trying to perform the access with.
Questions tagged [disk-access]
50 questions
0
votes
2 answers
Minimizing disk accesses when getting attributes of files in a directory
As the title suggests, I'm looking for a way to get attributes of a large number of files in a directory, but without adding the cost of an additional disk access for each file.
For example, if I get the Name attribute of FileInfo objects in a…
ianbeks
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2 answers
File system stats
I use the following code to find the disk usage of my /
int main()
{
struct statfs *stat;
statfs64("/tmp",stat);
perror("");
printf("%lu \n",stat->f_bfree*stat->f_bsize);
return 0;
}
The perror keeps on printing "Bad Address"…
rjv
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0
votes
1 answer
Determine iOS application's total disk usage/filesize
I have an app that allows users to download files and save them to the device's internal memory. I need to be able to display the total app disk usage at any given time. I found how to check the total device disk size and usage, but not specifically…
EtienneS
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- 1
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1 answer
PostgreSQL JOIN, under the hood
I have question about PostgreSQL join.
Does PostgreSQL create temporary table for JOINed tables or it makes everything
without any temporary tables?
The reason of my question is:
When I make SELECT request with many JOINs, I see IO spike in write…
user1456308
-1
votes
1 answer
Which addressing mode to be used to access disk?
I am learning OS development and I'm in preliminary level. I created a simple boot loader. To access other files on the disk(say HDD or USB drive), which addressing mode should I use?(CHS or LBA or INT 13h extensions).
Which of these addressing mode…
Panther Coder
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