Good afternoon!
In the case of CO, UP, and so on for large amounts of data, the target system starts to slow down considerably. The test showed that SVN starts consuming all available memory and more. I think it's because all the data pumped into RAM and then dumped on the hard drive, and the memory is not freed. You have to kill the process, make SVN CLEANUP, and then SVN UP to continue updating the repository.

Best Regards,
Krasikov Alexey,
тел:      +7 (999) 789-0-789
skype:  alexey_krasikov_1986