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new 473c7ed5164 [opt](memory)
`max_sys_mem_available_low_water_mark_bytes`default value modified to 6.4G
(#37174)
473c7ed5164 is described below
commit 473c7ed51641db57f310b3829e4b05c190cf0faa
Author: Xinyi Zou <[email protected]>
AuthorDate: Fri Jul 5 15:53:02 2024 +0800
[opt](memory) `max_sys_mem_available_low_water_mark_bytes`default value
modified to 6.4G (#37174)
// The maximum low water mark of the system
`/proc/meminfo/MemAvailable`, Unit byte, default 6.4G,
// actual low water mark=min(6.4G, MemTotal * 10%), avoid wasting too
much memory on machines
// with large memory larger than 64G.
// Turn up max. On machines with more than 64G memory, more memory
buffers will be reserved for Full GC.
// Turn down max. will use as much memory as possible.
---
be/src/common/config.cpp | 7 +------
be/src/common/config.h | 8 ++++----
2 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/be/src/common/config.cpp b/be/src/common/config.cpp
index a2e9729199d..a5677721326 100644
--- a/be/src/common/config.cpp
+++ b/be/src/common/config.cpp
@@ -116,12 +116,7 @@ DEFINE_mInt32(max_fill_rate, "2");
DEFINE_mInt32(double_resize_threshold, "23");
-// The maximum low water mark of the system `/proc/meminfo/MemAvailable`, Unit
byte, default 1.6G,
-// actual low water mark=min(1.6G, MemTotal * 10%), avoid wasting too much
memory on machines
-// with large memory larger than 16G.
-// Turn up max. On machines with more than 16G memory, more memory buffers
will be reserved for Full GC.
-// Turn down max. will use as much memory as possible.
-DEFINE_Int64(max_sys_mem_available_low_water_mark_bytes, "1717986918");
+DEFINE_Int64(max_sys_mem_available_low_water_mark_bytes, "6871947673");
// The size of the memory that gc wants to release each time, as a percentage
of the mem limit.
DEFINE_mString(process_minor_gc_size, "10%");
diff --git a/be/src/common/config.h b/be/src/common/config.h
index e450f220427..0d424940cfc 100644
--- a/be/src/common/config.h
+++ b/be/src/common/config.h
@@ -158,10 +158,10 @@ DECLARE_mInt32(max_fill_rate);
DECLARE_mInt32(double_resize_threshold);
-// The maximum low water mark of the system `/proc/meminfo/MemAvailable`, Unit
byte, default 1.6G,
-// actual low water mark=min(1.6G, MemTotal * 10%), avoid wasting too much
memory on machines
-// with large memory larger than 16G.
-// Turn up max. On machines with more than 16G memory, more memory buffers
will be reserved for Full GC.
+// The maximum low water mark of the system `/proc/meminfo/MemAvailable`, Unit
byte, default 6.4G,
+// actual low water mark=min(6.4G, MemTotal * 10%), avoid wasting too much
memory on machines
+// with large memory larger than 64G.
+// Turn up max. On machines with more than 64G memory, more memory buffers
will be reserved for Full GC.
// Turn down max. will use as much memory as possible.
DECLARE_Int64(max_sys_mem_available_low_water_mark_bytes);
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