Advice sought on CvPerfMgr log for Aux Copy Troubleshooting

Hi Team,

We have an issue with one of our Aux Copies, which for reasons unknown has poor rates of throughput compared to near identical Aux Copies.

I would like to see if anyone has an understanding of the values in the CvPerfMgr logfile so we can further troubleshoot.

We are writing to a target Cloud copy. Other SP’s write there with very good rates of throughput (10 GB/Hr).
My “problem” SP Copy is hovering around 300 GB\HR,  AND we have a large backlog of copy data.

I have checked the basics such as Q&I times, local server and DDB performance and I can’t see anything obvious.

Q&I times on the Primary are ok (roughly 1800).

Q&I times on the Secondary are around 630.

CPU utilisation on both servers (we are using partitioned dedupe for both primary and secondary) is excellent (maybe 30 or 40% whilst Aux Copies and backups are running).

So, i then took a look at the CvPerfMgr logfile, but I could do with some further information.

I can see a reference t reader speed possibly being 1488.11 GBPH:-

Replicator DashCopy                                    
|_Buffer allocation....      1248        [Samples -    156996] [Avg - 0.0    7949    ]                
|_Media Open...........         3        [Samples -    6] [Avg - 0.500000    ]                    
|_Chunk Recv...........         -        [Samples -    6] [Avg - 0.000000    ]                    
|_Reader...............        17    7545376828    [7.03 GB]    [1488.11 GBPH]    

Further down the logfile, I can possibly see Network Transfer as only being 19.69 GBPH:-

Reader Pipeline Modules[Client]                                    
|_CVA Wait to received data from reader..      1547                                    
|_CVA Buffer allocation..................         -                                    
|_SDT: Receive Data......................        36    7552876220    [7.03 GB]    [Samples - 157014]    [Avg    -    0.000229]    [703.4    2 GBPH]    
|_SDT-Head: CRC32 update.................         8    7552818684    [7.03 GB]    [Samples - 157013]    [Avg    -    0.000051]    [3165.    35 GBPH]    
|_SDT-Head: Network transfer.............      1286    7552818684    [7.03 GB]    [Samples - 157013]    [Avg    -    0.008190]    [19.69    GBPH]    
|_SDT:Stats..............................         -                                    
|_[Compression : ZIP]....................         -                                    
|_[Buf size : 65536].....................  -                                    
|_[Buf count : 180]......................         -                                    
|_[SDT threads : 16].....................         -                                    
|_[Processor count : 16].................         -                                    
|_[Thread per Connection : 8]............         -

Further down the logile I can possibly see the logfile showing write speeds as only 19.98 GBPH:-

Writer Pipeline Modules[MediaAgent]                                    
|_[Stream target: MediaAgent1]..............        -                                    
|_SDT-Tail: Wait to receive data from source........      330    7552876220    [7.03 GB]    [Samples - 157014]    [Avg    -    0.002102]    [76.74    GBPH]    
|_SDT-Tail: Writer Tasks............................      1562    7552818684    [7.03 GB]    [Samples - 157013]    [Avg    -    0.009948]    [16.21    GBPH]    
|_DSBackup: Update Restart Info.....................         -                                    
|_DSBackup: Media Write.............................     1266    7545896404    [7.03 GB]    [19.98 GBPH]    

However, as I don’t fully understand this logfile I can’t be certain on what it is stating.

So if there is anyone who has had dealing with these logfiles, maybe a support discussion along the way it would be good to know.

Thanks