Citrix director Top 10 processes calculation

  • When looking into historical machine utilization on director and locating “Top 10 Processes”, you might see average memory used as 0% most of the time :-
  • Note :- To go to historical utilization of machine – Login to Citrix director > Go to Filters > Machines > All machines > Multi-Session OS machines > Pick the machine of interest> View Historical Utilization > Select Time Period as “Last 24 Hours” > Scroll down to top 10 processes view and you can find the details of the application memory/CPU consumption specific to that machine for last 24 hours

  • Here is an example, how it is calculated :-

For example Machine has 128 GB of RAM – which is 1.28e+8 KB.

1 process at any given point of time is taking around 500 MB = 500000 KB.

What is 1% of 1.28e+8 KB ? – 1280000 KB = 1280 MB.

So technically for any process to take 1% of memory from a 128 GB RAM, it has to at least consume 1280 MB ..

Now we are talking about the average that means that process has to take 1280 MB for a consistent amount of time to show under director as part of average memory consumption.

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RAG values over 512 KB in R7 can have a performance impact

The solution is to lower the RAG value to 512 KB. This should have no negative performance impact. In fact in R8 the RAG never goes over 512 KB for non-HTTP traffic.

In ATM 7.1 you can find the current ATM value using bmcli:

root@TM> show optimization tcp... Buffers --------- Wireless side Receive Buffer : 512 KB Wireless side Send Buffer : 1024 KB Internet side Receive Buffer : 512 KB Internet side Send Buffer : 512 KB Read Ahead Gap Buffer : 2048 KB

To change the RAG value in R7 follow the instructions in CTX229061 .

If you believe you need a higher value of RAG, you should open a customer support ticket.

The solution in R8

In R8, if you configure a RAG of over 512 KB, the system will automatically reduce it to 512 KB for non HTTP traffic. This way you cannot have a CPU or performance impact.

For example in an R8 system:

  • With RAG 512 KB both HTTP and non-HTTP traffic will get a 512 KB RAG
  • With RAG 1 MB, the non-HTTP traffic will get a 512 KB RAG and the HTTP traffic will get a 1 MB RAG

This was changed in bug 68751.

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Re: System is running a system software version that is more than 180 days old.

Hi karthik.kumar

Not sure what you are asking exactly.

This is just an informational message saying you are not running latest code available.

If you would like to, then an upgrade is recommended.

If not, then you should be at a very minimum, at target code.

For info on latest revs, target, etc, visit this KB:

https://support.emc.com/kb/489694

Andre @ Dell EMC

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System is running a system software version that is more than 180 days old.

Hi karthik.kumar

Not sure what you are asking exactly.

This is just an informational message saying you are not running latest code available.

If you would like to, then an upgrade is recommended.

If not, then you should be at a very minimum, at target code.

For info on latest revs, target, etc, visit this KB:

https://support.emc.com/kb/489694

Andre @ Dell EMC

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DDBoost clone session running in Networker, but transferring not happens regularly on Data Domain

Hi folks,

Anyone had experience the issue where clone sessions (Managed File Replication/DDBoost Replication) running on Networker but when you checked on Data Domain (command : ddboost file-replication show performance), you see data transfer from source DD to the target is not happening regularly (even in interval more than a minutes) ?

Here’s the screenshot in Data Domain :

09/07 16:03:36

Outbound Inbound

Pre-comp Network Pre-comp Network

(KB/s) (KB/s) (KB/s) (KB/s)

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– – – –

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32066 369 – –

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81734 530 – –

32678 243 – –

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8125 536 – –

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09/07 16:04:09

Outbound Inbound

Pre-comp Network Pre-comp Network

(KB/s) (KB/s) (KB/s) (KB/s)

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09/07 16:04:43

Outbound Inbound

Pre-comp Network Pre-comp Network

(KB/s) (KB/s) (KB/s) (KB/s)

——— ——— ——— ———

– – – –

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09/07 16:05:17

Outbound Inbound

Pre-comp Network Pre-comp Network

(KB/s) (KB/s) (KB/s) (KB/s)

——— ——— ——— ———

– – – –

– – – –

– – – –

– – – –

– – – –

If I checked on Data Domain running net iperf command, I can see that the transfer happens every second.

FYI, I’m running Networker 9.1.1.9 and using DD2200.

Best Regards,

Martin

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