Incease index and mirror memory limits, a=chris

diff --git a/src/configs/Config.php b/src/configs/Config.php
index 184f67206..61fc8857b 100755
--- a/src/configs/Config.php
+++ b/src/configs/Config.php
@@ -745,7 +745,7 @@ function defineMemoryProfile()
 //Check system memory then set up limits for processes based on this
 defineMemoryProfile();
 /** Max memory index.php can use */
-nsconddefine('INDEX_FILE_MEMORY_LIMIT', ceil(MEMORY_PROFILE/4) . "000M");
+nsconddefine('INDEX_FILE_MEMORY_LIMIT', ceil(MEMORY_PROFILE/2) . "000M");
 /** Max memory a QueueServer can use */
 nsconddefine('QUEUE_SERVER_MEMORY_LIMIT', MEMORY_PROFILE . "000M");
 /** Max memory a Fetcher can use */
@@ -753,7 +753,7 @@ nsconddefine('FETCHER_MEMORY_LIMIT', ceil(MEMORY_PROFILE/1.5) . "000M");
 /** Max memory a MediaUpdater can use */
 nsconddefine('MEDIA_UPDATER_MEMORY_LIMIT', ceil(MEMORY_PROFILE/2) . "000M");
 /** Max memory a Mirror can use */
-nsconddefine('MIRROR_MEMORY_LIMIT', ceil(MEMORY_PROFILE/4) ."000M");
+nsconddefine('MIRROR_MEMORY_LIMIT', ceil(MEMORY_PROFILE/2) ."000M");
 /** Max memory a ClassifierTrainer can use */
 nsconddefine('CLASSIFIER_TRAINER_LIMIT', ceil(MEMORY_PROFILE/4) ."000M");
 /** Max memory a QueueServer can use */