-----Original Message----- From: Eric D. Mudama [mailto:edmudama@xxxxxxxxx] Sent: Friday, December 12, 2008 5:55 PM To: Matthew Wilcox Cc: Bart Van Assche; Raz Ben-Yehuda; linux-ide@xxxxxxxxxxxxxxx; linux-scsi@xxxxxxxxxxxxxxx Subject: Re: Intel X25-M MLC SSD benchmarks On 12/12/08, Matthew Wilcox <matthew@xxxxxx> wrote: > On Fri, Dec 12, 2008 at 07:25:18AM -0700, Eric D. Mudama wrote: >> Oops, I guess I assumed that by writing a few gigabytes of data it >> wouldn't matter that much. I'll run the test again in a bit once I'm >> off this solaris machine. > > You need to rescale for 2008; people often have 4GB or more RAM in their > machines ... hell, I have one machine here from 2002 with 14GB in it > (I don't power it up very often because it's too noisy). The test was > only writing 1GB of data, which would fit in the page cache of my laptop, > never mind the kind of machine that's likely to have an 8-way array > attached to it. >>I just retested on a linux box at work, and got 79 MB/s on both the >>X18-M and X25-M, and 197MB/s on an X25-E. All were done with bs=1M >>count=1000 oflag=direct. What is the serial number of your x25.M ? what controller ? How new is it ? Please dd all disk and then retest, just to be sure you used all erase blocks. --<<eric -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
