From da46a2ac48cc1671da587bad4db6c5ecd4a2c443 Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Wed, 26 Sep 2018 02:03:31 -0700
Subject: [PATCH] ircd::db: Do our own default sharding calc based on request
 context contention.

---
 ircd/db.cc | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/ircd/db.cc b/ircd/db.cc
index 23806d2bb..66654a9bf 100644
--- a/ircd/db.cc
+++ b/ircd/db.cc
@@ -2219,9 +2219,9 @@ noexcept
 
 decltype(ircd::db::database::cache::DEFAULT_SHARD_BITS)
 ircd::db::database::cache::DEFAULT_SHARD_BITS
-{
-	-1
-};
+(
+	std::min(std::log2(size_t(db::request_pool_size)), 8.0)
+);
 
 decltype(ircd::db::database::cache::DEFAULT_STRICT)
 ircd::db::database::cache::DEFAULT_STRICT