GNOME Bugzilla – Bug 532995
gnome-system-monitor reports wrong upload/download speed
Last modified: 2011-11-11 10:03:55 UTC
Please describe the problem: The graphs show incorrect upload and download values. The values jumps from zero to the value of the up / download very fast A screenshot of the problem can be fount here: http://launchpadlibrarian.net/14085155/gnome-system-monitor.png Steps to reproduce: 1) upload/download a big file so a lot of up/download network traffic will be generated 2) start gnome-system-monitor 3 look at the graphics tab (3rd tab of gnome-system-monitor) at the Network graphs. Actual results: The upload / download graphics jumps very fast from zero to a high value See the screenshot: http://launchpadlibrarian.net/14085155/gnome-system-monitor.png Expected results: A merely constant value of the upload / download graphics Does this happen every time? Yes Other information: Also reported on: https://bugs.launchpad.net/ubuntu/+source/gnome-system-monitor/+bug/108912
That would not be the first buggy NIC driver ...
Used hardware: Motherboard Boxed Intel® Desktop Board DQ965GF Processor Intel Core 2 Duo Processor E6600 (BX80557E6600) Memory 4x1 Gb (DDR2 800, Dual-channel) HD 320 Gb Seagate SATA nVidia NX7600 GS 256MB
Just like http://bugzilla.gnome.org/show_bug.cgi?id=518355 Could you run something like: for i in $(seq 1 10); do cat /sys/class/net/eth0/statistics/rx_bytes; sleep 1; done while downloading ?
Here we go: wget http://ftp.snt.utwente.nl/pub/linux/ubuntu-releases/hardy/ubuntu-8.04-desktop-i386.iso for i in $(seq 1 10); do cat /sys/class/net/eth0/statistics/rx_bytes; sleep 1; done Output while downloading: 1747905158 1747905158 1749503164 1749503164 1751084674 1751084674 1752764716 1752764716 1753982080 1753982080 Optionally output from wget: --21:46:43-- http://ftp.snt.utwente.nl/pub/linux/ubuntu-releases/hardy/ubuntu-8.04-desktop-i386.iso => `ubuntu-8.04-desktop-i386.iso' Herleiden van ftp.snt.utwente.nl... 130.89.175.1 Verbinding maken met ftp.snt.utwente.nl|130.89.175.1|:80... verbonden. HTTP-verzoek is verzonden; wachten op antwoord... 200 OK Lengte: 733,079,552 (699M) [application/octet-stream] 3% [> ] 24,186,360 753.32K/s ETA 16:25 Good luck hunting the bug....
Then it's totally a dup of http://bugzilla.gnome.org/show_bug.cgi?id=518355 . See the kernel stats: they are updated once every 2 seconds. Try to run the graph with a longer interval (at least 2 seconds).
Please mark this bug duplicate. Thanks for your time & fast conclusion Sir Good luck
*** This bug has been marked as a duplicate of 518355 ***