Public bug reported:
When Chromium is running (but otherwise idle!), there is NFS traffic
between my workstation and the NFS server here. On the order of 24000
packets per second. Several tens of packets, OK. several hundreds: mwah.
But this is outrageous.
When strace-ing the chrome process I see:
poll([{fd=11, events=POLLIN}, {fd=12, events=POLLIN}, {fd=31, events=POLLIN},
{fd=32, events=POLLIN}, {fd=137, events=POLLIN}], 5, 0) = 0 (Timeout)
recvmsg(31, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily
unavailable)
recvmsg(31, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily
unavailable)
recvmsg(32, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily
unavailable)
recvmsg(32, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily
unavailable)
recvmsg(32, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily
unavailable)
It uses poll to wait for events... and then gets informed: A timeout
occurred, no filedescriptors are ready and then STILL Tries to read from
fd 31 and 32. Furthermore, the process seems to specify a 0 timeout as
quite often I see the poll call return in about 20-50 microseconds.
The process that is doing this shows as:
/snap/chromium/1284/usr/lib/chromium-browser/chrome --no-default-
browser-check --no-first-run --password-store
1)
Description: Ubuntu 20.04.1 LTS
Release: 20.04
2)
chromium-browser:
Installed: 84.0.4147.105-0ubuntu0.20.04.1
Candidate: 84.0.4147.105-0ubuntu0.20.04.1
Version table:
*** 84.0.4147.105-0ubuntu0.20.04.1 500
500 http://nl.archive.ubuntu.com/ubuntu focal-updates/universe amd64
Packages
100 /var/lib/dpkg/status
80.0.3987.163-0ubuntu1 500
500 http://nl.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
3) I expect chromium to use little to no resources (CPU, network) when I'm not
actively using it. (asking for small memory footprint is not currently
realistic).
4)_ Chromium seems to do something that requires NFS traffic.
** Affects: chromium-browser (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1893650
Title:
Chromium snap causes network traffic. (Duh!)
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