FTP tranfer window - CPU load updating transferred data cnt
Posted: 27.10.2008, 09:37
Hi,
I have found more suboptimal design issue than a bug.
I was downloading an Linux DVD ISO by FTP feature by speed cca 1 MB/s. During time I noticed high CPU load, consuming cca all power of 1 CPU core. First I thought CPU is busy because of transfer or on the fly AV scanning. But even my previous old Celeron 600 was able to run this 1 MB/s speed.
Later I realized the CPU demand decreases if I minimize FTP transfer window. When keeping FTP transfer window on the top, CPU load lasted, until I had a heureka idea. I decreased the width of the transfered data column to hide it. At that moment CPU load fell down.
The point probably is that current transferred data are visually updated by cosmic speed, that can probably make such a CPU load.
I use FC version 2008.06c on Windows Vista 64 Premium SP1 / E4700 Core2Duo Processor / Inter GMA 3100 built in graphic / 3 GB RAM. I have quite good LAN connection 10Mbit/2Mbit.
Edit: typo corrections
I have found more suboptimal design issue than a bug.
I was downloading an Linux DVD ISO by FTP feature by speed cca 1 MB/s. During time I noticed high CPU load, consuming cca all power of 1 CPU core. First I thought CPU is busy because of transfer or on the fly AV scanning. But even my previous old Celeron 600 was able to run this 1 MB/s speed.
Later I realized the CPU demand decreases if I minimize FTP transfer window. When keeping FTP transfer window on the top, CPU load lasted, until I had a heureka idea. I decreased the width of the transfered data column to hide it. At that moment CPU load fell down.
The point probably is that current transferred data are visually updated by cosmic speed, that can probably make such a CPU load.
I use FC version 2008.06c on Windows Vista 64 Premium SP1 / E4700 Core2Duo Processor / Inter GMA 3100 built in graphic / 3 GB RAM. I have quite good LAN connection 10Mbit/2Mbit.
Edit: typo corrections