Well I was a little to fast with my conclusion. It only happens to files in the demo because they have a proper header, the virtual documents only give a 404 for a HEAD request.
The download is not of matter, the demo files are 500 bytes or so. And the server load stays as long as the client is connected. As I said, I was able to replicate this on two different machines and it is not limited to local access. cross tests between the machines also show this behaviour. Lars > -----Original Message----- > From: twsocket-boun...@elists.org > [mailto:twsocket-boun...@elists.org] On Behalf Of Arno Garrels > Sent: Thursday, June 30, 2011 3:49 PM > To: ICS support mailing > Subject: Re: [twsocket] HTTP Server creates extremly high CPU load > > Lars Gehre wrote: > > I noticed one thing: This only happens if files are involved, for > > virtual documents it does not happen. > > I cannot reproduce it, 0.0% CPU here. > I used the OverbyteIcsWebServ demo running on a Win7 quadcore. > However if I download a file with Firefox (100 Mbit/s LAN) at > around 6 MB/s CPU 0 uses ~25-30% and CPU 2 8-15%, overall > usage of the server process ~8-10% reported by Process Explorer. > > -- > Arno Garrels > > > > > > > For the http server demo it means you need to open > > Index.html or Form.html. > > > > Lars > > > >> -----Original Message----- > >> From: twsocket-boun...@elists.org > >> [mailto:twsocket-boun...@elists.org] On Behalf Of Lars Gehre > >> Sent: Thursday, June 30, 2011 11:21 AM > >> To: 'ICS support mailing' > >> Subject: [twsocket] HTTP Server creates extremly high CPU load > >> > >> Hello all, > >> > >> I have a serious problem with the http server component from > >> ICS7 (downloaded from the repository last week). > >> > >> I'm using the wininet api on the client side to open a (GET) > >> connection to a ICS http Server. > >> For certain reasons I need to query the HEAD in intervals > >> (while the other get is still in progress). > >> As soon as I send the second request the CPU load of the http > >> server maxes out one CPU core. > >> > >> Steps to reproduce: > >> > >> - Run the http server demo from ics. > >> > >> - Download the demo > >> www.dvbviewer.tv/icsproblem/icsproblem.zip source (delphi 7) > >> > >> - Run the demo, enter the url of the demo server and press the > >> button. > >> > >> - As soon as the call to GetFileSize is finished you see the > >> CPU load of the webserver going up. > >> > >> > >> I checked it on two windows 7 (multicore) machines with the > >> same result. > >> > >> I also checked it against several other http servers and none > >> of them had a problem with this kind of usage. > >> > >> > >> Thanks > >> Lars > >> > >> -- > >> To unsubscribe or change your settings for TWSocket mailing > >> list please goto > >> http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket > >> Visit our website at http://www.overbyte.be > -- > To unsubscribe or change your settings for TWSocket mailing list > please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket > Visit our website at http://www.overbyte.be > -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
