NDB communication slow ?
Hi everybody,
we tested 2 cluster configurations:
ndb2: Machine A (nodegroup 0)
ndb3: Machine B (nodegroup 0)
ndb4: Machine A (nodegroup 1)
ndb5: Machine B (nodegroup 1)
Both Machine A and Machine B has the same configuration.
Each ndb nodes has 4GB RAM.
1. I made the nodes 2 and 4 down. With only 2 NDB nodes in the cluster (no redundancy). The answer time was 2-4 ms for each request (read or write).
2. Then again made nodes 2 and 4 UP. Then with 4 NDB Nodes on 2 computers (with redundancy), we got 11-17 ms for each requests (read/write).
I am puzzled of why i get such a variation in the request time. Is that cluster is taking much of the time in redundancy and data handling between nodes in different machines ?
and How can we can reduce this? any suggestions please..
Thanks in advance.
Bala
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NDB communication slow ?
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January 17, 2005 07:01AM
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January 17, 2005 03:43PM
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