Question
When I enabled DEFLATE compression in the settings of DATA ENTRY > HULFT Transfer Send, the transfer rate became slower.
What could be the cause of this?
Answer
DEFLATE compression will not be applied in the following three cases, even if DEFLATE compression is enabled in settings.
- HULFT on the receiving side is less than version 8.
- The receiver is HULFT8, and "HULFT7 Communication Mode" in Host Information is "Enabled (Y)".
- The receiver is HULFT Square, and the host set to Inbound in Data Entry >HULFT Transfer Hosts has the V7 Compatibility check box selected.
Based on the above, please review the HULFT version and host information settings on the receiver side.
If the target file for compression is already compressed data, it may be difficult to obtain the compression effect and the CPU load may increase.
For data that is not suitable for DEFLATE compression, please refer to the following FAQ.
What kind of data is not expected to compress well with DEFLATE compression?
https://support.square.hulft.com/hc/articles/8940068340756
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