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From Deyan Tsvetanov <deyan_of...@ittconsult.com>
Subject Re: Seed Data Load very slow in Ubuntu 10.04
Date Mon, 03 May 2010 09:32:46 GMT
Sorry, I hit ctrl + enter too quickly :)

http://www.phoronix.com/scan.php?page=article&item=linux_perf_regressions&num=1

So - don't use the 2.6.32 kernel for production yet :)


On Mon, 2010-05-03 at 12:24 +0300, Deyan Tsvetanov wrote:
> http://www.phoronix.com/scan.php?page=article&item=ubuntu_lucid_alpha2&num=3
> 
> PostgreSQL's performance continues to suffer dramatically under Ubuntu
> 10.04 LTS and it is not expected that it will change at all for this
> next Ubuntu release. This major drop in the number of transactions being
> carried out per second is due to an EXT4 file-system change designed to
> provide better data safety but with a significant performance penalty.
> This matter is talked about in Autonomously Finding Performance
> Regressions In The Linux Kernel. The PostgreSQL performance also suffers
> in Fedora 13 and any other Linux distributions using the Linux 2.6.32
> kernel. Even with Fedora 13 being much earlier into its development
> cycle and carrying some debugging options by default (along with using
> SELinux), Fedora 13 Rawhide performed quite closely to Ubuntu 10.04
> Alpha 2 in this test.
> 
> 
> 
> On Mon, 2010-05-03 at 14:37 +0530, Ravindra Mandre wrote:
> > I am also facing the same problem that Kranti reported above.
> > I also using Ubuntu 10.04.
> > 
> > Regards
> > Ravindra Mandre
> > 
> > On Mon, May 3, 2010 at 2:17 PM, Jonatan Soto <seniledementia@gmail.com>wrote:
> > 
> > > I am using Ubuntu 9.10 with ext4 and it works great.
> > >
> > > On Mon, May 3, 2010 at 10:42 AM, Kranti Agrawal <krantionline@gmail.com
> > > >wrote:
> > >
> > > > Hi,
> > > >
> > > > I installed Ubuntu 10.04 LTS yesterday with ext4 as the default file
> > > > system.
> > > > The seed data load is very very slow. It takes around 30 mins to load.
> > > > In ubuntu 8.04 LTS, it took around 2-3 mins max.
> > > > Is it due to the ext4 file system? or anything else?
> > > >
> > > > Regards,
> > > > Kranti Agrawal
> > > > Student, IIIT Bangalore
> > > > krantiagrawal.blogspot.com
> > > >
> > >
> 
> 



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