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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We are using x2go for a common compute server at our department. We have users both on the local LAN and connections to the other side of Europe that work really well. Being able to close the client and have computations still running in
a GUI environment is great.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">However, I think we have encountered a bug. Some (but not all) of the long-running x2goagent processes start taking a lot of memory, ~30 GB. This adds up quickly so that the other users can’t do their work. Below you can see how user3 and
user7 have x2goagent processes with large memory use (RSS column).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">How can I go about debugging this? I have quite a bit of Linux experience, but I don’t know where to start on this one since I don’t know much about how x2go works internally.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="background:white"><span style="color:#222222">Server is on Ubuntu Server 18.04.1 LTS, (x2goserver 4.1.0.3-0~1708~ubuntu18.04.1). Clients are on Windows 10, version. 4.1.2.0.<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="background:white"><span style="color:#222222"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New";color:#222222">johannes@compute-server:~$ ps -o pid,lstart,rss,user $(pgrep x2goagent)<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New";color:#222222"> PID STARTED RSS USER<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New";color:#222222">4668 Fri Nov 8 08:35:35 2019 60896 user1<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New";color:#222222">5743 Wed Dec 4 15:44:41 2019 249456
</span><span lang="SV" style="font-family:"Courier New";color:#222222">user2<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="SV" style="font-family:"Courier New";color:#222222;background:yellow;mso-highlight:yellow">14728 Thu Dec 5 10:17:25 2019 34926120 user3</span><span lang="SV" style="font-family:"Courier New";color:#222222"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New";color:#222222">19408 Fri Dec 20 08:46:30 2019 199720 user4<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New";color:#222222">48797 Wed Oct 2 15:34:44 2019 297680 user5<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New";color:#222222">50693 Thu Dec 12 18:24:24 2019 317796 user6<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New";color:#222222;background:yellow;mso-highlight:yellow">54561 Thu Dec 19 09:35:34 2019 28977804 user7</span><span style="font-family:"Courier New";color:#222222"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="SV" style="font-family:"Courier New";color:#222222">56244 Fri Jan 17 08:19:29 2020 170856
</span><span style="font-family:"Courier New";color:#222222">user8</span><span lang="SV" style="font-family:"Courier New";color:#222222"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New";color:#222222">60386 Thu Nov 14 09:23:37 2019 146416 user9<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#222222"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#222222"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#222222"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New";color:#222222">johannes@compute-server:~$ apt show x2goserver<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New";color:#222222">Package: x2goserver<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New";color:#222222">Version: 4.1.0.3-0~1708~ubuntu18.04.1<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#222222"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#222222"><br>
— <o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#222222">Johannes Töger<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#222222"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#222222">Associate Senior Lecturer<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#222222">Cardiac MR Group<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#222222">Department of Clinical Sciences Lund, Clinical Physiology<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="color:#222222">Lund University, Sweden<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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