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ndbmtd constantly writes to disk on idle
Posted by: d g
Date: May 24, 2016 02:25AM

Hi,

I just setup a mysql cluster, so far everything is working as expected.
I have 2 data nodes with just ndbmtd running. I noticed that on both data nodes the ndbmtd processes writing constantly 7-10MB/sec on disk with an idle cluster for more than 12Hours.

#Node 1
Device: tps MB_read/s MB_wrtn/s MB_read MB_wrtn
vda 472,00 0,00 9,24 0 9

#Node 2
Device: tps MB_read/s MB_wrtn/s MB_read MB_wrtn
vda 488,00 0,00 9,62 0 9

The netwok traffic is 200-250KB/sec on each node overall.

Is this a normal behavior ? is it possible stop that ?

Thanks
Regards

Denny

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ndbmtd constantly writes to disk on idle
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d g
May 24, 2016 02:25AM


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