Using EC2 ephemeral 4disk raid0 cause high iowait trouble

Hi Our service already run cassandra 1.0 on 1x ec2 instances(with ebs), and we saw lots of discussion talk about using ephemeral raid for better performance and consistent performance. So we want to create new instance using 4 ephemeral raid0, and copy the data from ebs to finally replace the ol

Re: Using EC2 ephemeral 4disk raid0 cause high iowait trouble

On Ubuntu ? Sounds like http://wiki.apache.org/cassandra/FAQ#ubuntu_hangs Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 16/05/2012, at 2:13 PM, koji Lin wrote: > Hi > > Our service already run cassandra 1.0 on 1x ec2 instances(with ebs)

Re: Using EC2 ephemeral 4disk raid0 cause high iowait trouble

Hi We use amazon ami 3.2.12-3.2.4.amzn1.x86_64 and some of our data file are more than 10G thanks koji 2012-5-16 下午6:00 於 "aaron morton" 寫道： > On Ubuntu ? Sounds like http://wiki.apache.org/cassandra/FAQ#ubuntu_hangs > > Cheers > > > - > Aaron Morton > Freelance Developer > @a

Re: Using EC2 ephemeral 4disk raid0 cause high iowait trouble

Are you using the Ubuntu operating system ? Cheers - Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 18/05/2012, at 1:59 PM, koji Lin wrote: > Hi > > We use amazon ami 3.2.12-3.2.4.amzn1.x86_64 > > and some of our data file are more than 10G > >

Re: Using EC2 ephemeral 4disk raid0 cause high iowait trouble

for what it's worth i've been having pretty good success using the Datastax AMIs. On 5/17/2012 6:59 PM, koji Lin wrote: Hi We use amazon ami 3.2.12-3.2.4.amzn1.x86_64 and some of our data file are more than 10G thanks koji 2012-5-16 下午6:00 於 "aaron morton"

Re: Using EC2 ephemeral 4disk raid0 cause high iowait trouble

Hi I think amazon ami is based on RHEL. thank you 2012/5/21 aaron morton > Are you using the Ubuntu operating system ? > > Cheers > > - > Aaron Morton > Freelance Developer > @aaronmorton > http://www.thelastpickle.com > > On 18/05/2012, at 1:59 PM, koji Lin wrote: > > Hi > >

Re: Using EC2 ephemeral 4disk raid0 cause high iowait trouble

Hi Thanks for your information, we will try that. koji 2012/5/23 Deno Vichas > for what it's worth i've been having pretty good success using the > Datastax AMIs. > > > > On 5/17/2012 6:59 PM, koji Lin wrote: > > Hi > > We use amazon ami 3.2.12-3.2.4.amzn1.x86_64 > > and some of our data file

Re: Using EC2 ephemeral 4disk raid0 cause high iowait trouble

Did you upgrade DataStax AMIs? Did you add a node to an existing ring? Thanks *Tamar Fraenkel * Senior Software Engineer, TOK Media [image: Inline image 1] ta...@tok-media.com Tel: +972 2 6409736 Mob: +972 54 8356490 Fax: +972 2 5612956 On Wed, May 23, 2012 at 2:00 AM, Deno Vichas wrot