okay I searched for used-space-filewalker and looked at the first couple pages of results to see if there were logs. I know, highly scientific statistical sampling.
4 people had context canceled errors:
Disk usage discrepancy? - Node Operators / troubleshooting - Storj Community Forum (official)
Storj restart always - Node Operators / troubleshooting - Storj Community Forum (official)
Filewalker crashes node - Node Operators / troubleshooting - Storj Community Forum (official)
One guys had context canceled error but there were… a lot… of other problems simultaneously:
Node crashes after restart - Node Operators / troubleshooting - Storj Community Forum (official)
One guy had a context canceled error, but the cause was definitely not performance but the storage-dir-verification.
I didn’t see any log fragments for used-space-filwalker that didn’t say context canceled, which may be part of the problem with the error message… it’ gets used for possibly lots of different underlying problems.