Re: data upload causes increase in CPU activity and network slowdouwn. (SOLUTION)
From: Lorenzo Sandini (lorenzo.sandini_at_uku.fi)
Date: 12/07/04
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Date: Tue, 07 Dec 2004 21:00:22 GMT
I found Zonealarm was the cause of this.
Simply closing the firewall didn't cure the problem, but uninstalling the
software did it.
I installed a previous version (ZA Suite 51_033_000.exe) and it all works
fine. Re-installed the 55_062_004.exe (with junk mail filter...) and the
problem is there again, on both computers.
I am now going to ZoneLabs.com to see what they say about that.
Lorenzo
"Lorenzo Sandini" <lorenzo.sandini@POISTA.uku.fi> wrote in message
news:CV0td.275$Eb.16@read3.inet.fi...
> Hi,
>
> Very strange behaviour on my home computers here. I moved from Switzerland
> to Finland and kept my same hardware, but recently I noticed my computers
> got very hot when uploading data to remote servers, or when people were
> downloading data from my servers.
>
> I am using a standard P4-based homebuilt desktop PC and a Toshiba laptop,
> both under XP SP2. Firewall is ZoneAlarm.
>
> Each computer connects to a Linksys WAG54G ADSL modem/router, either
> wirelessly or on a wired basis, tried both and problem is still there.
> Connection is 512/512 kbps on a RFC 1483B ADSL connection, and computers
> are fitted with either Linksys PCMCIA / PCI linksys WLAN adapters, and
> wired network adapters, all configurations provide the same results.
>
> Connection to router, to the internet, workgroup browsing, file and
> printer sharing all work like they should. Issue is identical with /
> without firewall.
>
> Downloading from the internet, or receiving data on the FTP server works
> fine. All incoming connections work fine indeed.
>
> Problems arise when I am sending out data, either actively uploading data
> from my home computer to a remote FTP server, or when people download data
> from my HTTP server hosted on one of my machines at home. When I start
> sending out data, the task manager notices an increase in the CPU cycles
> for the process sending data (either ftp client, ftp server, apache
> server, etc...), with CPU use finally reaching 100%. Similarly, the upload
> speed comes slowly but steadily down from 55 kb/s to about 20 kb/s, and
> remains at that value after that.
>
> To be precise, both computers exhibit the same behaviour suddely, while
> all was fine 6 weeks ago with the same hardware.
>
> Virus and spyware scans tell me the machines are "clean", and all I can
> think of is the firmware upgrade of the router, and I also flashed it back
> to an older version without success.
>
> Any suggestion ?
>
> Thanks in advance
> Lorenzo
>
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