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SRDF/S and WP
When i started SRDF/S sesssions the WP cache increased which cause performance impact
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When i started SRDF/S sesssions the WP cache increased which cause performance impact
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Quincy561
1.3K Posts
1
June 18th, 2015 09:00
Sync RDF will add overhead to writes, they must go to both arrays before they can be acknowledged to the host. Also the RDF links could be a new bottleneck, causing the writes to back up.
You should expect write response time to increase, even if the WP counts do not build up. If you cannot tolerate an increase to response time, you may want to consider Async replication.
I would open a performance case to have the system looked at for the cause of the increased WP tracks.
sauravrohilla
859 Posts
1
June 19th, 2015 07:00
slower disks could also lead to higher WP..
ahmad_alayan
5 Posts
0
June 21st, 2015 03:00
after performance analysis we found there is no enough capacity on the array, which caused the WP problem.
it is a capacity issue