# Low read performance per distinct hashing process **URL:** \ **Category:** Support\ **Created:** [September 6, 2020, 4:21pm UTC](https://kopia.discourse.group/t/low-read-performance-per-distinct-hashing-process/90 "2020-09-06T16:21:03Z")\ **Posts on this page:** 1\ **Showing post:** 5
**Author:** ![jkowalski](https://yyz2.discourse-cdn.com/free1/user_avatar/kopia.discourse.group/jkowalski/32/3_2.png) [@jkowalski](https://kopia.discourse.group/u/jkowalski)\ **Post date:** [September 7, 2020, 2:55pm UTC](https://kopia.discourse.group/t/low-read-performance-per-distinct-hashing-process/90/5 "2020-09-07T14:55:33Z")
35 MB/s is not expected. If you run `kopia benchmark crypto` measures the throughput of hashing and encryption (which should be upwards of 200-300 MB/s single-threaded on modern CPUs). On top of that there’s also compression (if you use it) and splitting (`kopia benchmark splitter`) which on my machine is about 150MB/s single threaded. Kopia can achieve best throughput when the upload is parallelized, which is not implemented yet for individual large files but can and will be in the future. --- _[View the full topic](https://kopia.discourse.group/t/low-read-performance-per-distinct-hashing-process/90)._