From c9cfb7546db5387f4d2f746d8c8eed58637bb422 Mon Sep 17 00:00:00 2001
From: ruslandoga <67764432+ruslandoga@users.noreply.github.com>
Date: Thu, 5 Dec 2024 19:11:56 +0700
Subject: [PATCH] low resources

---
 .gitignore                   |  1 +
 clickhouse/low-resources.xml | 23 +++++++++++++++++++++++
 compose.yml                  |  3 +++
 3 files changed, 27 insertions(+)
 create mode 100644 clickhouse/low-resources.xml

diff --git a/.gitignore b/.gitignore
index 4e33a3c..ae85196 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 !compose.yml
 !clickhouse/logs.xml
 !clickhouse/ipv4-only.xml
+!clickhouse/low-resources.xml
 !README.md
 !LICENSE
 !.gitignore
diff --git a/clickhouse/low-resources.xml b/clickhouse/low-resources.xml
new file mode 100644
index 0000000..f313e1d
--- /dev/null
+++ b/clickhouse/low-resources.xml
@@ -0,0 +1,23 @@
+<!-- https://clickhouse.com/docs/en/operations/tips#using-less-than-16gb-of-ram -->
+<clickhouse>
+    <!--
+    https://clickhouse.com/docs/en/operations/server-configuration-parameters/settings#mark_cache_size -->
+    <mark_cache_size>524288000</mark_cache_size>
+
+    <profile>
+        <detault>
+            <!-- https://clickhouse.com/docs/en/operations/settings/settings#max_threads -->
+            <max_threads>1</max_threads>
+            <!-- https://clickhouse.com/docs/en/operations/settings/settings#max_block_size -->
+            <max_block_size>8192</max_block_size>
+            <!-- https://clickhouse.com/docs/en/operations/settings/settings#max_download_threads -->
+            <max_download_threads>1</max_download_threads>
+            <!--
+            https://clickhouse.com/docs/en/operations/settings/settings#input_format_parallel_parsing -->
+            <input_format_parallel_parsing>0</input_format_parallel_parsing>
+            <!--
+            https://clickhouse.com/docs/en/operations/settings/settings#output_format_parallel_formatting -->
+            <output_format_parallel_formatting>0</output_format_parallel_formatting>
+        </detault>
+    </profile>
+</clickhouse>
diff --git a/compose.yml b/compose.yml
index 2fe91e5..5e3fb13 100644
--- a/compose.yml
+++ b/compose.yml
@@ -20,6 +20,9 @@ services:
       # This makes ClickHouse bind to IPv4 only, since Docker doesn't enable IPv6 in bridge networks by default.
       # Fixes "Listen [::]:9000 failed: Address family for hostname not supported" warnings.
       - ./clickhouse/ipv4-only.xml:/etc/clickhouse-server/config.d/ipv4-only.xml:ro
+      # This makes ClickHouse consume less resources, which is useful for small setups.
+      # https://clickhouse.com/docs/en/operations/tips#using-less-than-16gb-of-ram
+      - ./clickhouse/low-resources.xml:/etc/clickhouse-server/config.d/low-resources.xml:ro
     ulimits:
       nofile:
         soft: 262144