How to investigate backup performance

Summary

Slow backups might be due to high disk load or network issues. To troubleshoot, adjust parameters to evaluate performance.

Open the aip.ini file in the installation path, then add the parameter in the [aipcopy] section. 

[aipcopy]
profile_data_pipeline=1

Adding a parameter allows the information to be obtained from the next task log.

— tasklog excerpt —
03/29/2018 02:10:47.069 [config] profile_data_pipeline=1
03/29/2018 02:10:47.069 actual threadcount 4
03/29/2018 02:10:47.070 actual packet_queue_size 4
03/29/2018 02:57:51.838 Busy for what:  
         STATUS_CREATE_READ:            0 / 18737    347
         STATUS_CREATE_ZERO_UNUSED:        0 / 18737    0
         STATUS_CREATE_CALC_CRC:        0 / 18737    15
         STATUS_CREATE_DEDUP:            0 / 18737    0
         STATUS_CREATE_COMPRESS_LZO:        0 / 18737    622
         STATUS_CREATE_COMPRESS_ZLIB:        0 / 0    0
         STATUS_CREATE_COMPRESS_eLZS:        0 / 0    0
         STATUS_CREATE_ENCRYPT_RC5:        0 / 0    0
         STATUS_CREATE_ENCRYPT_AES:        0 / 0    0
         STATUS_CREATE_ENCRYPT_AES256:        0 / 0    0
         STATUS_CREATE_WRITE:            0 / 18737    2869
————————

How to read logs:

STATUS_CREATE_READ:            0 / 18737    347

—>This indicates how many times and how long it took to read the snapshot during image creation. Specifically, it was read 18737 times and took 347 seconds.

STATUS_CREATE_WRITE:            0 / 18737    2869

—>This shows how many times and how long it took to write to the destination during image creation. Specifically, it was written 18737 times and took 2869 seconds. 

Comparing these times, the write time is approximately 8 times longer. Thus, it suggests that writing to the destination is slow.

Resolution

For NAS, the speed may vary depending on network load and the NAS itself. For local disks, check the disk controller's write policy and the OS load.

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