Re: [Openstack] Swift on RHEL/CentOS in prod?

2012-01-11 Thread Rustam Aliyev
=eu.citrix@lists.launchpad.net] *On Behalf Of *Rustam Aliyev *Sent:* 10 January 2012 16:49 *To:* openstack@lists.launchpad.net *Subject:* Re: [Openstack] Swift on RHEL/CentOS in prod? Hi Armando, Thanks for sharing your experience. It's interesting to hear that you run 5.5. My p

Re: [Openstack] Swift on RHEL/CentOS in prod?

2012-01-10 Thread Rustam Aliyev
ailto:openstack-bounces+armando.migliaccio=eu.citrix@lists.launchpad.net] *On Behalf Of *Rustam Aliyev *Sent:* 22 December 2011 11:08 *To:* openstack@lists.launchpad.net *Subject:* [Openstack] Swift on RHEL/CentOS in prod? Hi, I was wondering if anyone uses Swift on RHEL/CentOS in production?

[Openstack] Swift on RHEL/CentOS in prod?

2011-12-22 Thread Rustam Aliyev
Hi, I was wondering if anyone uses Swift on RHEL/CentOS in production? If yes, which version of RHEL/CentOS you are using? Thanks, Rustam. ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : ht

Re: [Openstack] Swift slow write performance

2011-12-22 Thread Rustam Aliyev
wang 发自我的 iPhone 在 2011-12-20，19:13，Rustam Aliyev <mailto:rus...@code.az>> 写道： Hi Mike, Thanks, I didn't know that PUT operation also includes updating replica containers. That makes sense. I will check that. In the mean time I've added debug checkpoints into PUT operatio

Re: [Openstack] Swift slow write performance

2011-12-20 Thread Rustam Aliyev
log levels INFO and DEBUG. Would be nice to have some more info in DEBUG and even TRACE level for this kinda problems. -- Rustam. On 20/12/2011 04:41, Michael Barton wrote: On Mon, Dec 19, 2011 at 6:21 AM, Rustam Aliyev wrote: The only thing which looks suspicious to me are these errors:

Re: [Openstack] Swift slow write performance

2011-12-19 Thread Rustam Aliyev
11-12-16，11:20，Rustam Aliyev 写道： Hi, I'm testing swift 1.4.4 setup with 4 nodes/zones on RHEL 5.7. I ran into the problem of slow writes. Using swift-bench we generated load, writing hundreds of 4K files. Results: - Writes - ~3 PUTs/sec (very slow) - Reads - ~25 GETs/sec (ok) It's cl

[Openstack] Swift slow write performance

2011-12-15 Thread Rustam Aliyev
Hi, I'm testing swift 1.4.4 setup with 4 nodes/zones on RHEL 5.7. I ran into the problem of slow writes. Using swift-bench we generated load, writing hundreds of 4K files. Results: - Writes - ~3 PUTs/sec (very slow) - Reads - ~25 GETs/sec (ok) It's clear that writes are not limited by I/O.

Re: [Openstack] Swift maximum recommended objects per container

2011-12-15 Thread Rustam Aliyev
Just for reference, question was answered here: https://answers.launchpad.net/swift/+question/181977 On 15/12/2011 10:02, Rustam Aliyev wrote: Hi, While searching for the swift performance tuning tips I came across this post: http://adrianotto.com/2010/09/openstack-os-is-great-for/ In the

[Openstack] Swift maximum recommended objects per container

2011-12-15 Thread Rustam Aliyev
Hi, While searching for the swift performance tuning tips I came across this post: http://adrianotto.com/2010/09/openstack-os-is-great-for/ In the comments, some users mention that it's better to keep max. number of objects per container less than 1M. As far as I understood, this is mainly d

[Openstack] High I/O on idle Swift devices

2011-12-12 Thread Rustam Aliyev
Hi, I built 4 node test swift cluster and stored one 100MB file. Cluster was running 24 hours without any load. During this period, I can see constant read I/O of 3MB/s on each swift device. When I shutdown object-server I/O goes to zero. I've also increased replicator's run_pause to 300 sec,

[Openstack] identifying blob across multiple object stores

2011-08-19 Thread Rustam Aliyev
Hello, This question is not directly related to the OpenStack Object Store, but it would be interesting to hear your opinions on that. Imagine multi-cloud environment with multiple heterogeneous object stores (e.g. OpenStack, AWS S3, Azure blob store, etc.). And the question is: How to ident