Red Hat Bugzilla – Bug 434622
synergyc frequently pausing/hanging/locking, unusable
Last modified: 2008-03-09 10:00:36 EDT
Description of problem:
Synergy's client frequently pauses on FC8 system. The same version (1.3.1) of
the client ran perfectly well on the same box as an FC6 system before that box
was upgraded to FC8. Client machine (Fedora, problem box) is connected via
100Mb full-duplex ethernet to a wireless router. The host machine is a Windows
Vista box connected via 802.11g wireless. Again, this same configuration worked
identically the same day before the upgrade from fully upgraded FC6 to FC8.
Raising the priority of the synergyc process does not fix the problem. Moving
the host machine from a wireless connection to a directly wired connection does
not fix the problem. The synergyc process is running as a user account, not root.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Connect synergyc to host computer
2. Move mouse over to system with synergyc
3. Move mouse around on screen (or type with keyboard)
After 2-15 seconds, the mouse will begin stuttering and pausing. If typing on
the keyboard, it will appear as if things are very laggy. Pauses may last
anywhere from 5-15 seconds. Once the pausing starts, it continues very frequently.
Attached is an strace of synergyc while the locking is happening.
Created attachment 295701 [details]
Trace of synergyc while the pausing is happening
I think ultimately this was a problem with the 2.6.23 kernel. I've recently
updated to the latest 18.104.22.168 kernel release and I haven't had the problem
since. I guess synergy didn't like that initial merge of CFQ.