From 77137f51286e61624c3cb43eac21c30e1dd7f5b0 Mon Sep 17 00:00:00 2001 From: Ti Chi Robot Date: Tue, 6 Aug 2024 18:36:41 +0800 Subject: [PATCH] update the maximum region size for TiFlash (#18501) (#18505) --- tune-region-performance.md | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/tune-region-performance.md b/tune-region-performance.md index 9f91e6aa09d62..3186c406e23b4 100644 --- a/tune-region-performance.md +++ b/tune-region-performance.md @@ -25,9 +25,7 @@ To reduce the performance overhead of many Regions, you can also enable [Hiberna > + Decreased query performance, especially for queries that deal with a large range of data > + Slower Region scheduling -To adjust the Region size, you can use the [`coprocessor.region-split-size`](/tikv-configuration-file.md#region-split-size) configuration item. When TiFlash is used, the Region size should not exceed 256 MiB. - -When the Dumpling tool is used, the Region size should not exceed 1 GiB. In this case, you need to reduce the concurrency after increasing the Region size; otherwise, TiDB might run out of memory. +To adjust the Region size, you can use the [`coprocessor.region-split-size`](/tikv-configuration-file.md#region-split-size) configuration item. When TiFlash or the Dumpling tool is used, the Region size should not exceed 1 GiB. After increasing the Region size, you need to reduce the concurrency if the Dumpling tool is used; otherwise, TiDB might run out of memory. ## Use bucket to increase concurrency