Re: Antw: Re: Best way to create multiple TCP flows on 10 Gbps link

2014-08-28 Thread Ulrich Windl
Mike Christie micha...@cs.wisc.edu schrieb am 27.08.2014 um 23:49 in Nachricht 53fe5276.2060...@cs.wisc.edu: On 08/27/2014 02:24 AM, Ulrich Windl wrote: Learner Study learner.st...@gmail.com schrieb am 27.08.2014 um 02:13 in Nachricht

Re: Antw: Re: Best way to create multiple TCP flows on 10 Gbps link

2014-08-28 Thread Mike Christie
On 08/28/2014 12:59 AM, Ulrich Windl wrote: To delete a device just do echo 1 /sys/block/sdX/device/delete I think the confusing thing is that you don't see a delete in /sys/block/sdX/device. Not sure what you mean. I do: ls /sys/block/sda/device/ block evt_media_change

Re: Antw: Re: Best way to create multiple TCP flows on 10 Gbps link

2014-08-28 Thread Mike Christie
On 08/28/2014 11:29 AM, Mike Christie wrote: On 08/28/2014 12:59 AM, Ulrich Windl wrote: To delete a device just do echo 1 /sys/block/sdX/device/delete I think the confusing thing is that you don't see a delete in /sys/block/sdX/device. Not sure what you mean. I do: ls

RE: iscsi over RBD performance tips?

2014-08-28 Thread Gruher, Joseph R
Note that librados can access data from all nodes in the cluster while iSCSI will funnel the data through whatever node or proxy is hosting the iSCSI target. What does your overall network and storage layout look like? Number of systems, number and type of disks, how are Ceph journals set up,