Messages in this thread | | | Date | Sat, 27 Feb 2010 06:09:07 -0500 (EST) | From | Justin Piszcz <> | Subject | Re: EXT4 is ~2X as slow as XFS (593MB/s vs 304MB/s) for writes? |
| |
On Sat, 27 Feb 2010, Justin Piszcz wrote:
> > > On Sat, 27 Feb 2010, Justin Piszcz wrote: > > > > > > > On Fri, 26 Feb 2010, Eric Sandeen wrote: > >
Hi,
I have found the same results on 2 different systems:
It seems to peak at ~350MiB/s performance on mdadm raid, whether a RAID-5 or RAID-0 (two separate machines):
The only option I found that allows it to go from: 10737418240 bytes (11 GB) copied, 48.7335 s, 220 MB/s to 10737418240 bytes (11 GB) copied, 30.5425 s, 352 MB/s
Is the -o nodelalloc option.
How come it is not breaking the 350MiB/s barrier is the question?
Justin.
| |