Mike's sudden inspirations

Just a quick info, because I forget this again and again--and it's not noted in the documentation yet either.

Sub-second timeouts are supported by libcurl and thus by pecl_http--yes but only if libcurl is built with (c-)ares support:

<quote url="curl_easy_setopt.html">

If libcurl is built to use the standard system name resolver, that portion of the transfer will still use full-second resolution for timeouts with a minimum timeout allowed of one second.

...but somehow managed to not get through, so here's my attempt:

awk -v RS="[\n ,]+" '{print}' < u.txt 

See http://ubuntu-tutorials.com/2008/11/17/regex-challenge/

This tiny program lists all users of a domain with a maildir quota usage above 90%.

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#include <pwd.h>
#include <errno.h>

#include <vpopmail.h>
#include <vauth.h>

int main(int argc, char **argv) {
    struct vqpasswd *user;
    char dir[1024];
    uid_t uid;
    gid_t gid;
    int offset_counter = -1, sort = 1, usage;

    if (argc != 2) {
        fprintf(stderr, "Usage: %s <domain>\n", argv[0]);
        return EXIT_FAILURE;
    }
    if (vget_assign(argv[1], NULL, 0, &uid, &gid) == NULL) {
        fprintf(stderr, "domain '%s' does not exist\n", argv[1]);
        return EXIT_FAILURE;
    }
    if (setgid(gid) || setuid(uid)) {
        fprintf(stderr, "could not setuid/setgid to %d:%d\n", uid, gid);
        return EXIT_FAILURE;
    }

    while (NULL != (user = vauth_getall(argv[1], !++offset_counter, sort))) {
        if (strcmp(user->pw_shell, "NOQUOTA")) {
            snprintf(dir, sizeof(dir), "%s/Maildir", user->pw_dir);
            usage = vmaildir_readquota(dir, 
                format_maildirquota(user->pw_shell));

            if (usage >= 90) {
                printf("%s %s %d\n", user->pw_name, user->pw_shell, usage);
            }
        }
    }

    return EXIT_SUCCESS;
}

Here's how my qmail-queue script looks like to selectively check messages with SpamAssassin for non-relay clients only:

#!/bin/sh
(if [ -n "${RELAYCLIENT+1}" -o `id -u` != 64011 ]; \
    then cat -; \
    else /usr/bin/spamc -x -U /var/run/spamd/spamd.sock; \
fi) | /usr/sbin/qmail-queue.orig

For the records.

So, finally a first beta of pecl_http 1.6 has been released.

This is the first version which supports libcurls multi socket API introduced in 7.16 through libevent.

Here's a not very impressive comparison of the performance of the traditional multi API vs. the new multi socket API:

mike@honeybadger:~/build/php-5.2-debug$ cli \
    ~/cvs/pecl/http/scripts/bench_select_vs_event.php \
    -u http://honeybadger/empty.html

>   1.134667s

mike@honeybadger:~/build/php-5.2-debug$ cli \
    ~/cvs/pecl/http/scripts/bench_select_vs_event.php \
    -u http://honeybadger/empty.html

>   1.151088s

mike@honeybadger:~/build/php-5.2-debug$ cli \
    ~/cvs/pecl/http/scripts/bench_select_vs_event.php \
    -u http://honeybadger/empty.html

>   1.131867s

mike@honeybadger:~/build/php-5.2-debug$ cli \
    ~/cvs/pecl/http/scripts/bench_select_vs_event.php \
    -u http://honeybadger/empty.html -e

>   0.993878s

mike@honeybadger:~/build/php-5.2-debug$ cli \
    ~/cvs/pecl/http/scripts/bench_select_vs_event.php \
    -u http://honeybadger/empty.html -e

>   0.998832s

mike@honeybadger:~/build/php-5.2-debug$ cli \
    ~/cvs/pecl/http/scripts/bench_select_vs_event.php \
    -u http://honeybadger/empty.html -e

>   0.997121s

Above empty.html is, well, empty. The following test requests a 100k file:

mike@honeybadger:~/build/php-5.2-debug$ cli  \
    ~/cvs/pecl/http/scripts/bench_select_vs_event.php  \
    -u http://honeybadger/100k.bin

>   2.205190s

mike@honeybadger:~/build/php-5.2-debug$ cli  \
    ~/cvs/pecl/http/scripts/bench_select_vs_event.php  \
    -u http://honeybadger/100k.bin

>   2.210525s

mike@honeybadger:~/build/php-5.2-debug$ cli  \
    ~/cvs/pecl/http/scripts/bench_select_vs_event.php  \
    -u http://honeybadger/100k.bin

>   2.254281s

mike@honeybadger:~/build/php-5.2-debug$ cli  \
    ~/cvs/pecl/http/scripts/bench_select_vs_event.php  \
    -u http://honeybadger/100k.bin -e

>   2.007220s

mike@honeybadger:~/build/php-5.2-debug$ cli  \
    ~/cvs/pecl/http/scripts/bench_select_vs_event.php  \
    -u http://honeybadger/100k.bin -e

>   1.945564s

mike@honeybadger:~/build/php-5.2-debug$ cli  \
    ~/cvs/pecl/http/scripts/bench_select_vs_event.php  \
    -u http://honeybadger/100k.bin -e

>   1.969575s

So, apparently time savings are not huge, but noticable.