Yes, tested with the latest build (1279) as well. See below tests results/input with different builds.
As a process of elimination, and for a super clean trial, using my HTPC computer (ASRock
Vision 3D Sandy Bridge model):
First time install of 4.1 Build 1279 - Download a 14.1GB File:
Steady Working Set 56MB / Private Bytes 96MB / Peak Private Bytes 1.8GB (at the start, then back down to normal).
Win7 64-bit system. - No prior SmartFTP installs. All Win Updates.
Maingear Potenza H77
4.1 Build 1265
- Win7 64-bit - 16Gb File. No issues. - 6 Multi-Parts.
Steady as she goes for both systems with different builds. One fresh, first time install of SmartFTP client software. The other updated...
* Updated from Build 1265 to 1279
on the Potenza
, after about 10mins, RAM had climbed to 265MB peak and steady at approx. 243MB. At 3hrs in and 10GB downloaded out of 25.1GB, single download (Not using Multi-Part/segmented), RAM was now at 856MB peak and steady at 809MB. No crashes or stalls with the connection up to that time.
(This is a more powerful system then my old XP based one (e.g. 8GB DDR3 1600 RAM, i7 3770, 2TB 7200RPM WD Caviar Black HDD). So I was not surprised that SmartFTP was holding steady after 3+hrs with no stalls or crashes as the RAM increased.)
After the final 5hrs of remaining download the results are: RAM peaked at: 1.894GB. No crashes. No dropped connections as with the XP system. Remember this was done with a single download over SSH, no Multi-Part. A hash check shows the 25.1GB file is 100% identical to the original source.
I was hoping this issue was isolated to my XP machine after having success with a first time install of 4.1 Build 1279 on the ASRock. To test this, I updated the Potenza to Build 1279 and started the biggest download I could find, over SFTP, single part as I was able to get MAX download without needing the Multi-Part function. Unfortunately, I'm convinced after doing my own tests, on my own systems, that there is an issue with files larger than 6Gb (the bigger the file and download time, the more the RAM is increased).
With the upgrade to Build 1279 from 1265 (where SmartFTP was perfect and issue free before), the best I can describe it mb, is there's bad code or other file interference somewhere. ?
Here's another test I did on the XP system several days ago(using 4.1 Build 1278):
Downloaded 52.47GB of data, 24 files of approx. 2.19Gb each. Zero issues on the XP system. No high RAM use nor high CPU usage. Each 2.19GB file was split into a Multi-Part of 6.
Host provider has done no major changes/updates to the FTP Server or FTP over SSH (SSHv2.0/Debian.)
See connection log below:
Thought it might be a Firewall issue after some research. I use COMODO Firewall, latest version as of Nov. 11th, previous version from March 2012. Disabled the FW. Restarted the XP system. Same issue with SmartFTP. So ruled out the Firewall.
*Only using Windows Firewall on both of the Win7 Systems tested above. The Potenza is not using any Anti Virus. The ASRock is using MSE for A/V.
I hope all the above makes sense and can be of some help with this issue.