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Operating Systems Linux Debian Problem with maximum files and directories Post 302952897 by ganon551 on Monday 24th of August 2015 07:07:51 AM
Old 08-24-2015
Problem with maximum files and directories

Hi,

I'm using Kali linux, I think it's a debian linux ?

I'm trying to create a folder in which there'll be 256 folders, and in each of this folders there will also be 256 folders.

Then in each terminate folders I want to create 4096 files.

It will look like /dir/aa/aa/aaa.txt, /dir/aa/aa/aab.txt, and so on.

Problem is when I try to fill the files, I'm using php (which may not be the best idea, but I need some functions such as sha512), so I open a big text file and read it to dispatch every line in its specific file. When I only have the 4096 files (ie. without all the directories before), there's no problem reading and writing, it's going quite fast.

When I try with all the directories, the read/write process takes super long time, like one minute to print one line into a file.

Do I reached the limit of files ? For what I thought, I could create up to 2^32 files in a directory.

Is php struggling ? Will perl or bash be better for that ? If so I need hashing functions that are not in bash.

If you guys have any idea, I'll be glad to hear it.

Thank you in advance Smilie

Last edited by rbatte1; 08-25-2015 at 01:01 PM..
 

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folders(1)						      General Commands Manual							folders(1)

NAME
folders - list folders and contents (only available within the message handling system, mh) SYNOPSIS
folders [+folder] [msg] [options] OPTIONS
Lists only the name of folders, with no additional information. This is faster because the folders need not be read. Prints a list of the valid options to this command. Lists the contents of the folder-stack. No +folder argument is allowed with this option. Re-numbers mes- sages in the folders. Messages are re-numbered sequentially, and any gaps in the numbering are removed. The default operation is -nopack, which does not change the numbering in the folder. Discards the top of the folder-stack, after setting the current folder to that value. No +folder argument is allowed with this option. This corresponds to the popd operation in the C-shell; see csh(1). The -push and -pop options are mutually exclusive: the last occurrence of either one overrides any previous occurrence of the other. Pushes the current folder onto the folder-stack, and makes the +folder argument into the current folder. If +folder is not given, the current folder and the top of the folder-stack are exchanged. This corresponds to the pushd operation in the C-shell; see csh(1). The -push switch and the -pop switch are mutually exclusive: the last occurrence of either one overrides any previous occurrence of the other. Lists folders recur- sively. Information on each folder is displayed, followed by information on any sub-folders which it contains. Displays only the total number of messages and folders in your Mail directory. This option does not print any information about individual folders. It can be sup- pressed using the -nototal option. The defaults for folders are: +folder defaults to all msg defaults to none -nofast -noheader -nototal -nopack -norecurse DESCRIPTION
The folders command displays the names of your folders and the number of messages that they each contain. The folders command displays a list of all the folders in your Mail directory. The folders are sorted alphabetically, each on its own line. This is illustrated in the following example: Folder # of messages ( range ); cur msg (other files) V2.3 has 3 messages ( 1- 3). adrian has 20 messages ( 1- 20); cur= 2. brian has 16 messages ( 1- 16). chris has 12 messages ( 1- 12). copylog has 242 messages ( 1- 242); cur= 225. inbox+ has 73 messages ( 1- 127); cur= 127. int has 4 messages ( 1- 4); cur= 2 (others). jack has 17 messages ( 1- 17); cur= 17. TOTAL= 387 messages in 8 folders. The plus sign (+) after inbox indicates that it is the current folder. The information about the int folder includes the term (others). This indicates that the folder int contains files which are not messages. These files may be either sub-folders, or files that do not belong under the MH file naming scheme. The folders command is identical to the effect of using the -all option to the folder command. If you use folders with the +folder argument, it will display all the subfolders within the named folder. as shown in the following exam- ple: % folders +test Folder # of messages ( range ); cur msg (other files) test+ has 18 messages ( 1- 18); (others). test/testone has 1 message ( 1- 1). test/testtwo has no messages. TOTAL= 19 messages in 3 folders. See refile(1) for more details of sub-folders. RESTRICTIONS
MH does not allow you to have more than 100 folders at any level in your Mail directory. PROFILE COMPONENTS
Path: To determine your MH directory Folder-Protect: To set protections when creating a new folder Folder-Stack: To determine the folder stack lsproc: Program to list the contents of a folder FILES
The user profile. SEE ALSO
csh(1), folder(1), refile(1), mhpath(1) folders(1)
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