diff --git a/doab_check/management/commands/check_items.py b/doab_check/management/commands/check_items.py
new file mode 100644
index 0000000..e6ccbaf
--- /dev/null
+++ b/doab_check/management/commands/check_items.py
@@ -0,0 +1,48 @@
+import datetime
+import logging
+from django.core.management.base import BaseCommand
+
+logger = logging.getLogger(__name__)
+
+from doab_check.check import check_link
+from doab_check.models import Item
+
+def mo_hr_now():
+    now = datetime.datetime.now()
+    return (now.day - 1) * 24 + now.hour
+    
+
+class Command(BaseCommand):
+    help = "check items in based on primary key"
+
+    def add_arguments(self, parser):
+        parser.add_argument('--max', nargs='?', type=int, default=120, help="max checks")
+
+    def handle(self, **options):
+        max_pk = Item.objects.latest('pk').pk
+        # round up to nearest 1000
+        top = max_pk - (max_pk % 1000) + 1000
+        start_time = datetime.datetime.now()
+        max = options['max']
+        n_checked = l_checked = 0
+        prime = 349
+        this_hr = mo_hr_now()
+        logger.info(f'this_hr: {this_hr} top: {top}')
+        for i in range(0, max):
+            j = (i * prime + this_hr) % top 
+            try:
+                item = Item.objects.get(pk=j)
+                for link in item.related.filter(status=1):
+                    check_link(link.link)
+                    l_checked += 1
+                n_checked += 1
+                if n_checked >= max:
+                    break
+            except Item.DoesNotExist:
+                continue
+
+        self.stdout.write(f'checked {n_checked} links')
+        end_time = datetime.datetime.now()
+        logger.info(f'checked {l_checked} links in {end_time - start_time}')
+        self.stdout.write(f'checked {l_checked} links for {n_checked} items in {end_time - start_time}')
+
diff --git a/doab_check/management/commands/check_some_links.py b/doab_check/management/commands/check_some_links.py
index 506338d..a9dd529 100644
--- a/doab_check/management/commands/check_some_links.py
+++ b/doab_check/management/commands/check_some_links.py
@@ -14,6 +14,7 @@ class Command(BaseCommand):
         parser.add_argument('--max', nargs='?', type=int, default=1000, help="max checks")
 
     def handle(self, **options):
+        start_time = datetime.datetime.now()
         max = options['max']
         n_checked = 0
         for link in Link.objects.all().order_by('?'):
@@ -22,4 +23,7 @@ class Command(BaseCommand):
             if n_checked >= max:
                 break
         self.stdout.write(f'checked {n_checked} links')
-        logger.info(f'checked {n_checked} links')
+        end_time = datetime.datetime.now()
+        logger.info(f'checked {n_checked} links in {end_time - start_time}')
+        self.stdout.write(f'checked {n_checked} links in {end_time - start_time}')
+