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Source View: do_mu_upgrade

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Source View

Line Code
55       * when this filter returns true.
56       *
57       * If the network is 50 sites or less, it will run every time. Otherwise,
58       * it will throttle itself to reduce load.
59       *
60       * @since 3.0.0
61       *
62       * @param bool true Whether to perform the Multisite upgrade routine. Default true.
63       */
64      } elseif ( apply_filters( 'do_mu_upgrade', true ) ) {
65           $c = get_blog_count();
66
67           /*
68            * If there are 50 or fewer sites, run every time. Otherwise, throttle to reduce load:
69            * attempt to do no more than threshold value, with some +/- allowed.
70            */
71           if ( $c <= 50 || ( $c > 50 && mt_rand( 0, (int)( $c / 50 ) ) == 1 ) ) {
72                require_once( ABSPATH . WPINC . '/http.php' );
73                $response = wp_remote_get( admin_url( 'upgrade.php?step=1' ), array( 'timeout' => 120, 'httpversion' => '1.1' ) );