From mboxrd@z Thu Jan 1 00:00:00 1970 MIME-Version: 1.0 Message-Id: <38EDBA6F.06842@mta2> Date: Fri, 7 Apr 2000 18:37:35 +0800 (CST) From: "zzh" To: linuxppc-embedded@lists.linuxppc.org Subject: about memory bandwidth Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Hi,How to measure the 60x bus bandwidth.I write a program to write to sdram in a tight loop,every iteration ,i write 8 words, it takes about 36 seconds to finish 32M iterations with i-cache enabled and d-cache disenabled.With d-cache enabled and flushing cache in every iteration,it takes about 16 seconds.This is below what i speculated.What is the possible reason?I program the sdram machine to enable burst mode. 4/7/2000 _____________________________________________ 263首都在线--中国人的网上家园 http://www.263.net 精彩、免费、还能省上网费，快订阅索易电子刊物！http://www.soim.com 积（优）点，换（奖）品！http://www.thepoints.com ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/