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Top Forums Shell Programming and Scripting Fast processing(mv command) of 1 million+ files using find, mv and xargs Post 302789089 by agentgrecko on Wednesday 3rd of April 2013 04:50:33 AM
Old 04-03-2013
Quote:
Originally Posted by hanson44
Are you sure it's one to two files per second?
Code:
$ ls | wc
   1993    1993   34863

Code:
$ time find . -name "*.*" -type f | xargs -I '{}' mv {} ../xxx
real    0m2.846s
user    0m0.668s
sys     0m2.104s

Code:
$ cd ../xxx
$ ls | wc
   1993    1993   34863

Seems like about 700 files per second. And this is running on kind of a dog of a linux computer, nothing special. Unless your find command is taking days, maybe your operations are going faster than you think. Smilie

At 500 files per second, you could mv a million files in 2000 seconds, about 30 minutes.
H hanson44, yup, around 2 files per sec. Smilie
I have a counter on /destination/dir that executes ls | wc -l every 2 sec just so I could check the progress.
I'm thinking that since /source/dir already contains 1.2 million files (and still receiving more from an auto-dump script), it contributes to the slow processing.
 

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IRSEND(1)								FSF								 IRSEND(1)

NAME
irsend - basic LIRC program to send infra-red commands SYNOPSIS
irsend [options] DIRECTIVE REMOTE CODE [CODE...] DESCRIPTION
Asks the lircd daemon to send one or more CIR (Consumer Infra-Red) commands. This is intended for remote control of electronic devices such as TV boxes, HiFi sets, etc. DIRECTIVE can be: SEND_ONCE - send CODE [CODE ...] once SEND_START - start repeating CODE SEND_STOP - stop repeating CODE LIST - list configured remote items SET_TRANSMITTERS - set transmitters NUM [NUM ...] SIMULATE - simulate IR event REMOTE is the name of a remote, as described in the lircd configuration file. CODE is the name of a remote control key of REMOTE, as it appears in the lircd configuration file. NUM is the transmitter number of the hardware device. For the LIST DIRECTIVE, REMOTE and/or CODE can be empty: LIST "" "" - list all configured remote names LIST REMOTE "" - list all codes of REMOTE LIST REMOTE CODE - list only CODE of REMOTE The SIMULATE command only works if it has been explicitly enabled in lircd. -h --help display usage summary -v --version display version -d --device use given lircd socket [/var/run/lirc/lircd] -a --address=host[:port] connect to lircd at this address -# --count=n send command n times EXAMPLES
irsend LIST DenonTuner "" irsend SEND_ONCE DenonTuner PROG-SCAN irsend SEND_ONCE OnkyoAmpli VOL-UP VOL-UP VOL-UP VOL-UP irsend SEND_START OnkyoAmpli VOL-DOWN ; sleep 3 irsend SEND_STOP OnkyoAmpli VOL-DOWN irsend SET_TRANSMITTERS 1 irsend SET_TRANSMITTERS 1 3 4 irsend SIMULATE "0000000000000476 00 OK TECHNISAT_ST3004S" FILES
/etc/lirc/lircd.conf Default lircd configuration file. It should contain all the remotes, their infra-red codes and the corresponding timing and wave- form details. DIAGNOSTICS
If lircd is not running (or /var/run/lirc/lircd lacks write permissions) irsend aborts with the following diagnostics: "irsend: could not connect to socket" "irsend: Connection refused" (or "Permission denied"). SEE ALSO
The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory. lircd(8), mode2(1), smode2(1), xmode2(1), irrecord(1), irw(1), http://www.lirc.org. irsend 0.8.7pre1 May 2010 IRSEND(1)
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