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From: "zzh" <david-1z@263.net>
To: linuxppc-embedded@lists.linuxppc.org
Subject: about memory bandwidth
Date: Fri, 7 Apr 2000 18:37:35 +0800 (CST)	[thread overview]
Message-ID: <38EDBA6F.06842@mta2> (raw)

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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

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             reply	other threads:[~2000-04-07 10:37 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2000-04-07 10:37 zzh [this message]
2000-04-07 12:09 ` about memory bandwidth Gabriel Paubert

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