From 4189c03b99acb29ad6665eb655cb20cce7a67380 Mon Sep 17 00:00:00 2001 From: Rickard Green Date: Mon, 21 Jan 2013 22:11:27 +0100 Subject: Raise default reader group limit to 64 --- erts/doc/src/erl.xml | 2 +- erts/emulator/beam/erl_cpu_topology.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml index 99f2466d79..fe7024b185 100644 --- a/erts/doc/src/erl.xml +++ b/erts/doc/src/erl.xml @@ -672,7 +672,7 @@

Limits the amount of reader groups used by read/write locks optimized for read operations in the Erlang runtime system. By - default the reader groups limit equals 8.

+ default the reader groups limit equals 64.

When the amount of schedulers is less than or equal to the reader groups limit, each scheduler has its own reader group. When the amount of schedulers is larger than the reader groups limit, diff --git a/erts/emulator/beam/erl_cpu_topology.c b/erts/emulator/beam/erl_cpu_topology.c index 3f90f34736..113c4a6a68 100644 --- a/erts/emulator/beam/erl_cpu_topology.c +++ b/erts/emulator/beam/erl_cpu_topology.c @@ -34,7 +34,7 @@ #include "bif.h" #include "erl_cpu_topology.h" -#define ERTS_MAX_READER_GROUPS 8 +#define ERTS_MAX_READER_GROUPS 64 /* * Cpu topology hierarchy. -- cgit v1.2.3