doc: add a question in FAQ about CPU usage

doc/de/weechat_faq.de.asciidoc

@@ -750,6 +750,19 @@ Damit WeeChat weniger Speicher benötigt, solltest Du folgende Tipps umsetzen:
   verwendet werden.
 * nutze einen kleineren Wert für die Option 'weechat.history.max_commands'
 
+// TRANSLATION MISSING
+[[cpu_usage]]
+=== How can I tweak WeeChat to use less CPU?
+
+// TRANSLATION MISSING
+You can follow same tips as for <<memory_usage,memory>>, and these ones:
+
+* hide "nicklist" bar: `/bar hide nicklist`
+* remove display of seconds in status bar time:
+  `/set weechat.look.item_time_format "%H:%M"` (this is the default value)
+* set the 'TZ' variable (for example: `export TZ="Europe/Paris"`), to prevent
+  frequent access to file '/etc/localtime'
+
 [[development]]
 == Entwicklung
 

doc/en/weechat_faq.en.asciidoc

@@ -709,6 +709,17 @@ You can try following tips to consume less memory:
   of option 'weechat.history.max_buffer_lines_minutes'
 * reduce value of option 'weechat.history.max_commands'
 
+[[cpu_usage]]
+=== How can I tweak WeeChat to use less CPU?
+
+You can follow same tips as for <<memory_usage,memory>>, and these ones:
+
+* hide "nicklist" bar: `/bar hide nicklist`
+* remove display of seconds in status bar time:
+  `/set weechat.look.item_time_format "%H:%M"` (this is the default value)
+* set the 'TZ' variable (for example: `export TZ="Europe/Paris"`), to prevent
+  frequent access to file '/etc/localtime'
+
 [[development]]
 == Development
 

doc/fr/weechat_faq.fr.asciidoc

@@ -739,6 +739,18 @@ Vous pouvez essayer les astuces suivantes pour consommer moins de mémoire :
   affecter une valeur à l'option 'weechat.history.max_buffer_lines_minutes'
 * réduire la valeur de l'option 'weechat.history.max_commands'
 
+[[cpu_usage]]
+=== Comment configurer WeeChat pour moins utiliser le processeur ?
+
+Vous pouvez suivre les mêmes astuces que pour la <<memory_usage,mémoire>>, et
+celles-ci :
+
+* cacher la barre "nicklist" : `/bar hide nicklist`
+* supprimer l'affichage des secondes dans l'heure de la barre de statut :
+  `/set weechat.look.item_time_format "%H:%M"` (ceci est la valeur par défaut)
+* définir la variable 'TZ' (par exemple : `export TZ="Europe/Paris"`), pour
+  éviter un accès fréquent au fichier '/etc/localtime'
+
 [[development]]
 == Développement
 

doc/it/weechat_faq.it.asciidoc

@@ -742,6 +742,19 @@ Esistono diversi trucchi per ottimizzare l'uso della memoria:
   impostare il valore dell'opzione 'weechat.history.max_buffer_lines_minutes'
 * ridurre il valore dell'opzione 'weechat.history.max_commands'
 
+// TRANSLATION MISSING
+[[cpu_usage]]
+=== How can I tweak WeeChat to use less CPU?
+
+// TRANSLATION MISSING
+You can follow same tips as for <<memory_usage,memory>>, and these ones:
+
+* hide "nicklist" bar: `/bar hide nicklist`
+* remove display of seconds in status bar time:
+  `/set weechat.look.item_time_format "%H:%M"` (this is the default value)
+* set the 'TZ' variable (for example: `export TZ="Europe/Paris"`), to prevent
+  frequent access to file '/etc/localtime'
+
 [[development]]
 == Sviluppo
 

doc/ja/weechat_faq.ja.asciidoc

@@ -710,6 +710,19 @@ OpenBSD では、プラグインファイル名の末尾が ".so.0.0" です (Li
   'weechat.history.max_buffer_lines_minutes' オプションに値を設定してください。
 * 'weechat.history.max_commands' オプションの値を減らしてください。
 
+// TRANSLATION MISSING
+[[cpu_usage]]
+=== How can I tweak WeeChat to use less CPU?
+
+// TRANSLATION MISSING
+You can follow same tips as for <<memory_usage,memory>>, and these ones:
+
+* hide "nicklist" bar: `/bar hide nicklist`
+* remove display of seconds in status bar time:
+  `/set weechat.look.item_time_format "%H:%M"` (this is the default value)
+* set the 'TZ' variable (for example: `export TZ="Europe/Paris"`), to prevent
+  frequent access to file '/etc/localtime'
+
 [[development]]
 == 開発
 

doc/pl/weechat_faq.pl.asciidoc

@@ -724,6 +724,19 @@ W celu zmniejszenia używanej pamięci możesz zastosować się do poniższych r
   wartość opcji 'weechat.history.max_buffer_lines_minutes'
 * zmniejszyć wartość opcji 'weechat.history.max_commands'
 
+// TRANSLATION MISSING
+[[cpu_usage]]
+=== How can I tweak WeeChat to use less CPU?
+
+// TRANSLATION MISSING
+You can follow same tips as for <<memory_usage,memory>>, and these ones:
+
+* hide "nicklist" bar: `/bar hide nicklist`
+* remove display of seconds in status bar time:
+  `/set weechat.look.item_time_format "%H:%M"` (this is the default value)
+* set the 'TZ' variable (for example: `export TZ="Europe/Paris"`), to prevent
+  frequent access to file '/etc/localtime'
+
 [[development]]
 == Rozwój