Comments (5)
I have, but I was afraid it would confuse most users. Which particular parameters would you want to be configurable?
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Reducing the level of compression would greatly increase performance. Setting it to -mx1
would still reduce the fill size a lot but would make the backup take seconds instead of minutes.
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@patrix87 : What about other flags (like the CPU utilization)? Wouldn't they need to be configurable as well?
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After reading the docs, 7z has multithreading 'on' by default. However, the LZMA2 algorithm it chooses only use 2 thread by default for following reason.
mt=[off | on | {N}]
Sets multithread mode. If you have a multiprocessor or multicore system, you can get a increase with this switch. 7-Zip supports multithread mode only for LZMA / LZMA2 compression and BZip2 compression / decompression. If you specify {N}, for example mt=4, 7-Zip tries to use 4 threads. LZMA compression uses only 2 threads.
LZMA2 uses: 1 thread for each chunk in x1 and x3 modes; and 2 threads for each chunk in x5, x7 and x9 modes. If LZMA2 is set to use only such number of threads required for one chunk, it doesn't split stream to chunks. So you can get different compression ratio for different number of threads. You can get the best compression ratio, when you use 1 or 2 threads.
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Implemented in v1.7.0. You can specify optional 7-zip switches for compression and decompression in the configuration file.
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Related Issues (20)
- issue with backup HOT 5
- Cannot import run-time settings from default configuration file (if any). Invalid JSON primitive: Skip. HOT 1
- Validation error. Backup version does not match HOT 3
- Can't start Plex after backup HOT 6
- After backup completes getting an error when the script attempts to start Plex HOT 3
- Plex Media Server Not Restarting HOT 1
- Email Notification Not Working HOT 2
- Plex Backup Failing-Nothing Changed HOT 16
- question/enhancement HOT 4
- Only receiving the error "Error processing dependencies. You cannot call a method on a null-valued expression." HOT 6
- Fix typo in log message HOT 1
- Add support for PowerShell 7.
- RUNAS ERROR: Unable to run ... 87: The parameter is incorrect. HOT 2
- Plex Backup Fails Through Task Scheduler (Win 10 Pro) HOT 2
- 87: The parameter is incorrect HOT 13
- Create a workaround for the error 87: The parameter is incorrect HOT 1
- Restore didn
- Restore didn't work too well for me HOT 16
- Sub folders not being created by backup process HOT 5
- Add the option to exclude Cache folder HOT 2
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