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Special Forums Hardware Filesystems, Disks and Memory Slow copy (cp) performance when overwriting files Post 302831919 by ces55 on Friday 12th of July 2013 09:16:06 AM
Old 07-12-2013
Slow copy (cp) performance when overwriting files

I have a lot of binary files I need to copy to a folder. The folder is already filled with files of the same name. Copying on top of the old files takes MUCH longer than if I were to delete the old files then copy the new files to the now-empty folder. This result is specific to one system - another unix system I'm using does not show the same results.

I don't know the system specifications, so I won't be able to post them (sorry). I'm just looking for ideas as to why I could be getting these results, and ideas to try to eliminate the problem. Thanks!
 

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rmm(1)							      General Commands Manual							    rmm(1)

NAME
rmm - remove messages (only available within the message handling system, mh) SYNOPSIS
rmm [+folder] [msgs] [-help] OPTIONS
Prints a list of the valid options to this command. The default settings for this command are: +folder defaults to the current folder msgs defaults to the current message DESCRIPTION
The rmm command deletes the current message from the current folder. You can specify messages and folders other than the current ones by using the +folder and msgs arguments. The current message is not changed by rmm, so a next will advance to the next message in the folder as expected. If you have defined a component rmmproc: in your file, then instead of simply renaming the message file, rmm will call the named program to delete the file. The rmm command removes messages by renaming the message files with a preceding comma. Many sites consider files that start with a comma to be a temporary backup, and arrange for cron(8) to remove such files once a day. PROFILE COMPONENTS
Path: To determine your Mail directory rmmproc: Program to delete the message FILES
The user profile. SEE ALSO
rmf(1) rmm(1)
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