Plesk Backup manager screen takes too much time to load

Symptoms

• The Tools & Settings > Backup manager screen in Plesk takes too much time to load
• The page loads after a while (few minutes) and displays the list of the backups correctly.
• The read disk speed is low and inconsistent:

# iotop
​Total DISK READ :      99.91 K/s | Total DISK WRITE :      9.24 M/s
Actual DISK READ:      99.91 K/s | Actual DISK WRITE:      9.21 M/s

Cause

There are a lot of backups, and it takes a long time to download a complete list.

The process responsible for the page parsing takes too long:

# watch -n1 'ps -eo pcpu,pid,user,args --no-headers| sort -t. -nk1,2 -k4,4 -r | head -n 10'
 101 1234567 root    /usr/local/psa/admin/bin/pmm-ras --get-dump-list --dump-storage=/var/lib/psa/dumps/ --type=server --guid=f53
# strace -vvvttTfs4096 -e file -p 1234567

This behavior has been confirmed as a bug with ID PPPM-13263

Resolution

Until the bug is fixed, the following workarounds can be used:

• Increase the hard disk speed (upgrade your hardware).
• Remove old backups or move them to another location in order to speed up page loading on the current hardware.