From 29c45ccd2322470d0d6cef0ae20600c8c68f97e9 Mon Sep 17 00:00:00 2001 From: Brad Beckmann Date: Fri, 20 Aug 2010 11:46:12 -0700 Subject: ruby: Reduced ruby latencies The previous slower ruby latencies created a mismatch between the faster M5 cpu models and the much slower ruby memory system. Specifically smp interrupts were much slower and infrequent, as well as cpus moving in and out of spin locks. The result was many cpus were idle for large periods of time. These changes fix the latency mismatch. --- configs/ruby/MOESI_CMP_token.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'configs/ruby/MOESI_CMP_token.py') diff --git a/configs/ruby/MOESI_CMP_token.py b/configs/ruby/MOESI_CMP_token.py index f2669ef78..3853ebbb4 100644 --- a/configs/ruby/MOESI_CMP_token.py +++ b/configs/ruby/MOESI_CMP_token.py @@ -36,13 +36,13 @@ from m5.defines import buildEnv # Note: the L1 Cache latency is only used by the sequencer on fast path hits # class L1Cache(RubyCache): - latency = 3 + latency = 2 # # Note: the L2 Cache latency is not currently used # class L2Cache(RubyCache): - latency = 15 + latency = 10 def define_options(parser): parser.add_option("--l1-retries", type="int", default=1, -- cgit v1.2.3