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Re: [HTCondor-users] ResidentSetSize

On 5/10/2016 3:24 PM, Bob Ball wrote:

2. Suggest using MemoryUsage for all policy expressions instead of
MemoryUsage = ( ( ResidentSetSize + 1023 ) / 1024 )

How will this help in this expression, other than just rounding 27GB a

Besides using the same units as RequestMemory, MemoryUsage represents what the HTCondor developers think is currently the best representation available for a job's memory usage. Once upon a time we recommended that everyone use ImageSize. Then everyone changed all their expressions to use ProportionalSetSizeKb, then changed again to ResidentSetSize. Instead of admins changing expressions as more subtle low-level metrics are introduced, the thinking is policy expressions could just use MemoryUsage.

What happens with this expression at first, when ResidentSetSize
is not yet available?

It will evaluate to UNDEFINED, same as ResidentSetSize.