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What is the recommended value for VMC parameters?

Former Member
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Hello expert

we are analyzing the IPC / VMC setting for performance, we have 5G ram for VMC, just wonder if someone if recommend the values for

rdisp/min_jvm,

rdisp/max_jvm,

vmcj/option/percentageYoungGen (sap says 100M, but isn't it depend on how much memory we have for the JVM?),

vmcj/option/percentageMinOldGen,

vmcj/option/maxJavaHeap

We have IPC running in VMC, I am monitoring in st03 for the performance. My another question is: what is acceptable average VMC response (AvgVMC CPU) time? I've seen most of time it's around 100ms, but sometime it goes up to 700ms. Is anything under 1000ms acceptable for IPC / ISA application? and BTW, what is VMC CPU time? For IPC, is it the time to price a whole sales order? or an item? in case of web catalog using IPC pricing, when displaying the web catalog, is VMC CPU time the time needed to calculate all prices of all products in the catalog?

Thanks

Jayson

Accepted Solutions (0)

Answers (3)

Answers (3)

former_member193379
Active Contributor
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Hi Jayson,

Please go throgh the below notes (specially 1223137 & 1269480), may help you

Note 1083358 - VMC: Recommendations for parameter settings

Note 1269480 - Collective Note about Performance of the IPC Configurator

Note 1248104 - Information about size and content of KB runtime versions

Note 1241435 - KB search for subitems is superfluous

Note 1239594 - VMC logging standard is reduced to ERROR

Note 1227157 - buffered access to variant tables

Note 1224955 - VMC performance improvement.

Note 1223137 - Dependencies being executed twice

Note 1170313 - Zero administration memory management in VMC

Note 1139442 - Prevent unnecessary update in CrmUpdateConfiguration

Note 1124499 - Caching of variant tables, direct database calls

Thanks,

Hamendra

Former Member
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No one else can share more info?

chintan_virani
Active Contributor
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You might want to review SAP Note 1269480

http://service.sap.com/sap/support/notes/1269480

hugo_amo
Employee
Employee
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Hi Jayson,

Have a look at :

1083358 - VMC: Recommendations for parameter settings

https://css.wdf.sap.corp/sap/support/notes/1083358

Regards,

Hugo

Former Member
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Hi Hugo

i've already read the note many time before, it only mentioned hte percentageYoungGen as stated in my message. It doens't say anything about the ones I mentioned otherwise.

Jayson