Re: Feature Request

[Samuel Flory <sflory rackable com>]

Samuel Flory wrote:

> Ethan Bonick wrote:
>
> > I was talking about admin config tools not install time config 
> > options. I
> > just want to have more than one choice when installing, you know 
> > something
> > like two or three choices. But then how many do you stop at to not have
> > too many but be enough to please most? It's a very complicated issue. 
> > I am
> > fine with ext3 being the default journal.
>
>
>  I for one am not okay with ext3 as the default, and only journalling 
> files system.  Let's face it the default ext3 journaling mode is 
> extremely slow on writes.  As you can see below reiserfs is x2 as fast 
> on writes, and x1.5 as fast on reads.  Writeback mode isn't much 
> better.  And ext3 is even worse on random file system access. 



Oops wrong set of benchmarks for reiserfs.  Let me dig up the correct 
set for reiserfs.

> Reiserfs:
> + dd if=/dev/zero of=bigfile bs=1024000 count=2048
> 2048+0 records in
> 2048+0 records out
>
> real    1m16.632s
> user    0m0.000s
> sys     0m12.580s
> + sync
>
> real    0m24.649s
> user    0m0.000s
> sys     0m0.320s
> + dd of=/dev/null if=bigfile bs=1024000 count=2048
> 2048+0 records in
> 2048+0 records out
>
> real    0m36.065s
> user    0m0.010s
> sys     0m10.690s
> + sync
> + du -sh bigfile
> 2.0G    bigfile
>
>
> ext3:
> + dd if=/dev/zero of=bigfile bs=1024000 count=3072
> 3072+0 records in
> 3072+0 records out
>
> real    2m15.430s
> user    0m0.010s
> sys     0m20.900s
> + sync
>
> real    0m32.166s
> user    0m0.000s
> sys     0m0.190s
> + dd of=/dev/null if=bigfile bs=1024000
> 3072+0 records in
> 3072+0 records out
>
> real    0m54.577s
> user    0m0.010s
> sys     0m16.070s
>
>
> ext2 in writeback mode
> + dd if=/dev/zero of=bigfile bs=1024000 count=3072
> 3072+0 records in
> 3072+0 records out
>
> real    2m12.781s
> user    0m0.020s
> sys     0m20.080s
> + sync
>
> real    0m25.971s
> user    0m0.000s
> sys     0m0.300s
> + dd of=/dev/null if=bigfile bs=1024000
> 3072+0 records in
> 3072+0 records out
>
> real    0m55.136s
> user    0m0.020s
> sys     0m15.430s
> + sync
>
> real    0m0.011s
> user    0m0.000s
> sys     0m0.000s
> + du -sh bigfile
> 3.0G    bigfile


--
Once you have their hardware. Never give it back.
(The First Rule of Hardware Acquisition)
Sam Flory  <sflory rackable com>