[LU-3478] enhancements to sgpdd-survey scripts

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.4.0
• Fix Version/s: Lustre 2.5.0
• Type: Bug
• Priority: Minor
• Reporter: Gregoire Pichon
• Assignee: Bobbie Lind (Inactive)
• Resolution: Fixed
• Labels: patch
• Severity: 3

Description

This is the continuation of work done in LU-2043.

Similarly to obdfilter-survey scripts,

• the output of sgpdd-survey should be fixed to display minimal and maximal bandwidth of sgp_dd instances. This allows to detect if "low" LUNs are present which is critical to get optimal storage performance.
• the plot-sgpdd script should be reorganize (and simplified) to handle read, write, or both operations.

Additionally, the sgpdd-survey script could be enhanced to support NUMA servers. Each sgp_dd instance would need to be binded to the cores local to the device it works on.

I am going to provides patches for these items.

Comments

[Peter Jones]

Bobbie

Could you please take care of this patch when it is supplied?

Gregoire,

Please post the link to gerrit when you have uploaded the patch

Thanks

Peter

[Gregoire Pichon]

Hello,

here is the patch: http://review.whamcloud.com/6680

The new output format is like this.

Mon Jun 17 15:39:23 CEST 2013 sgpdd-survey on mo92:/dev/sdcg mo92:/dev/sdd mo92:/dev/sdcs mo92:/dev/sdav mo92:/dev/sdbd mo92:/dev/sdbs mo92:/dev/sddg mo92:/dev/sdbq mo92:/dev/sddm mo92:/dev/sdq mo92:/dev/sdck mo92:/dev/sdbb mo92:/dev/sdbu mo92:/dev/sdo mo92:/dev/sdca mo93:/dev/sdbf mo93:/dev/sdbr mo93:/dev/sdao mo93:/dev/sdch mo93:/dev/sdcs mo93:/dev/sdbn mo93:/dev/sddb mo93:/dev/sdat mo93:/dev/sdcu mo93:/dev/sdcd mo93:/dev/sdbj mo93:/dev/sdal mo93:/dev/sdav mo93:/dev/sdac mo93:/dev/sdda from mo92
dev 30 sz 125829120K rsz 1024K crg    30 thr    60 write 4280.71  [  142.75,  153.30]  read 9830.51  [  330.39,  679.89]
dev 30 sz 125829120K rsz 1024K crg    30 thr   120 write 7979.94  [  266.20,  300.30]  read 8111.65  [  272.25,  778.19]
dev 30 sz 125829120K rsz 1024K crg    30 thr   240 write 9688.50  [  325.48,  444.24]  read 4538.64  [  151.37,  481.27]
dev 30 sz 125829120K rsz 1024K crg    30 thr   480 write 9658.11  [  323.16,  362.28]  read 2587.50  [   86.27,  496.80]
dev 30 sz 125829120K rsz 1024K crg    60 thr    60 write 3167.96  [   52.81,   56.88]  read 8283.40  [  139.05,  175.70]
dev 30 sz 125829120K rsz 1024K crg    60 thr   120 write 6036.79  [  100.69,  106.49]  read 6720.94  [  112.64,  220.85]
dev 30 sz 125829120K rsz 1024K crg    60 thr   240 write 9374.05  [  157.41,  181.15]  read 6982.80  [  117.08,  294.44]
dev 30 sz 125829120K rsz 1024K crg    60 thr   480 write 9391.87  [  156.72,  191.60]  read 6206.11  [  103.97,  338.40]
dev 30 sz 125829120K rsz 1024K crg   120 thr   120 write 3333.10  [   27.85,   31.92]  read 4422.78  [   36.98,   43.13]
dev 30 sz 125829120K rsz 1024K crg   120 thr   240 write 6278.19  [   52.60,   56.12]  read 5716.51  [   47.87,   56.38]
dev 30 sz 125829120K rsz 1024K crg   120 thr   480 write 8009.95  [   67.20,   91.78]  read 7835.47  [   65.70,  100.01]
dev 30 sz 125829120K rsz 1024K crg   240 thr   240 write 3330.90  [   13.89,   16.15]  read 4810.85  [   20.12,   23.52]
dev 30 sz 125829120K rsz 1024K crg   240 thr   480 write 5803.85  [   24.20,   28.81]  read 3642.01  [   15.19,   27.09]

[Gregoire Pichon]

the write png file that has been generated

[Gregoire Pichon]

Here is a proposal patch to support NUMA in sgpdd-script.
http://review.whamcloud.com/6683

[Gregoire Pichon]

Both two patches have been landed to master.
This ticket can be closed as resolved in Lustre 2.5.0.

[Peter Jones]

Landed for 2.5