Multiple FTP scripts submitted to a subprocess


 
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Old 02-11-2005
Question Multiple FTP scripts submitted to a subprocess

Why does running 5 FTP scripts sequentially take longer to run (16 seconds)
than when all 5 are submitted to a subprocess and run simultaneously (7 seconds)?
I would think there would be some I/O contention.
There are about 10 files to be FTP'd in each script.
Although each script connects to the same FTP site,
each script writes to a separate directory.
I tried just one FTP script and just changed directories before putting the files,
but it still took about 16 seconds.
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CURLOPT_ACCEPTTIMEOUT_MS(3)				     curl_easy_setopt options				       CURLOPT_ACCEPTTIMEOUT_MS(3)

NAME
CURLOPT_ACCEPTTIMEOUT_MS - timeout waiting for FTP server to connect back SYNOPSIS
#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ACCEPTTIMEOUT_MS, long ms); DESCRIPTION
Pass a long telling libcurl the maximum number of milliseconds to wait for a server to connect back to libcurl when an active FTP connec- tion is used. DEFAULT
60000 milliseconds PROTOCOLS
FTP EXAMPLE
CURL *curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/path/file"); /* wait no more than 5 seconds for FTP server responses */ curl_easy_setopt(curl, CURLOPT_ACCEPTTIMEOUT_MS, 5000L); curl_easy_perform(curl); } AVAILABILITY
Added in 7.24.0 RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. SEE ALSO
CURLOPT_STDERR(3), CURLOPT_DEBUGFUNCTION(3), libcurl 7.54.0 March 06, 2016 CURLOPT_ACCEPTTIMEOUT_MS(3)