BPDBM process runs at high CPU during backup of images with millions of files

BPDBM process runs at high CPU during backup of images with millions of files

Article: 100046267
Last Published: 2019-09-11
Ratings: 0 0
Product(s): NetBackup

Problem

During the normal backup window, customers may notice that the CPU will run at very high levels for the bpdbm.process. 

Error Message

No Error message occurs. CPU usage alerts are triggered by system monitoring tools

Cause

During backups of clients that contain millions of files, bpdbm will use more CPU to add all of the entries into the image catalog (.f files ). When the master server is running multiple backups of this type to update multiple client images, each with millions of files, the NetBackup master may experience a reduction in performance due to the overhead of processing so many files.

Solution

NetBackup Engineering have reviewed the issue and have determined that bpdbm is working as designed.

Customers experiencing this issue are recommended to review the client file data to confirm that all of the files in the backup are required to be backed up each time. Reducing the total count of files in the backup has been shown to reduce the CPU load on the master server. 

Alternatively, customers may also break up the backup into smaller parts to split up the total amount of files into smaller backup images.

References

Etrack : 3976913

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