Difference between revisions of "Storage-Benches"

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Storage benchmarking and tuning depends upon several parameters like file systems, kernel parameters, RAID configuration, network parameters, etc. This page aims to provide benchmarking tools and procedures for LCG Storage Element, as well as some tuning hints for particular hardware solutions.
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Storage benchmarking and [[TCP-Tuning|tuning]] depends upon several parameters like file systems, kernel parameters, RAID configuration, network parameters, etc. This page aims to provide benchmarking tools and procedures for LCG Storage Element, as well as some results for particular hardware solutions.
 
=  Benchmarking =
 
  
= Tuning =
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= Tools =
  
== DELL Systems ==
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The XIO software developed at CC-IN2P3 have been used to bench the storage. A presentation of this tool has been given in [https://indico.in2p3.fr/event/4340/session/2/contribution/3/material/slides/0.pdf this talk]. Now it is advised to move to [http://git.kernel.dk/cgit/fio/tree/README FIO] with a set of agreed parameters (work in progress).
  
== HP Systems ==
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= Procedures =
  
=== MDS 600 based system ===
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* Describe the hardware
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* Indicate filesystem options (at filesystem creation and mount options)
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* Indicate System parameters regarding I/O
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* Execute each test 3 times, report the average and standard deviation
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* For each test report FIO parameters
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* Publish your result (format to be defined) with date and person to contact
  
In order to enhance the performance of the MDS 600 based systems, the following tunings have been applied:
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= Results =
* Upgrading the hard disk firmware (HPD3). All hard disks should have the same firmware version.
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* Changing the power management profile (max cpu power).
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* [https://indico.in2p3.fr/event/11617/session/5/contribution/30/material/slides/0.pdf DELL R730xd with 6TB disks] with XIO
* Using the following system parameters for each disk:
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* [https://indico.in2p3.fr/event/11973/session/10/contribution/27/material/slides/0.pdf DELL R730xd with 8TB disks] with XIO
<pre>
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  echo "cfq" > /sys/block/cciss\!${disk}/queue/scheduler
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= External links =
  echo 256 > /sys/block/cciss\!${disk}/queue/nr_requests
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  echo 4096 >  /sys/block/cciss\!${disk}/queue/read_ahead_kb
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[http://git.kernel.dk/cgit/fio/tree/README FIO]
</pre>
 
* Using XFS filesystem aligned with the RAID strip
 
* Using RAID units composed of 5 disks wisely selected on different columns.
 

Latest revision as of 07:11, 22 septembre 2016

Storage benchmarking and tuning depends upon several parameters like file systems, kernel parameters, RAID configuration, network parameters, etc. This page aims to provide benchmarking tools and procedures for LCG Storage Element, as well as some results for particular hardware solutions.

Tools

The XIO software developed at CC-IN2P3 have been used to bench the storage. A presentation of this tool has been given in this talk. Now it is advised to move to FIO with a set of agreed parameters (work in progress).

Procedures

  • Describe the hardware
  • Indicate filesystem options (at filesystem creation and mount options)
  • Indicate System parameters regarding I/O
  • Execute each test 3 times, report the average and standard deviation
  • For each test report FIO parameters
  • Publish your result (format to be defined) with date and person to contact

Results

External links

FIO