<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1488503701918_40166"><span>Hi, </span></div><div id="yui_3_16_0_ym19_1_1488503701918_40166"><span><br></span></div><div id="yui_3_16_0_ym19_1_1488503701918_40166" dir="ltr"><span id="yui_3_16_0_ym19_1_1488503701918_40191">On the ocassion of my last patch of panic_on_oom, ping this also.</span></div><div id="yui_3_16_0_ym19_1_1488503701918_40166" dir="ltr"><span><br></span></div><div id="yui_3_16_0_ym19_1_1488503701918_40166" dir="ltr">Thanks and regards,</div><div id="yui_3_16_0_ym19_1_1488503701918_40166" dir="ltr"><br></div><div id="yui_3_16_0_ym19_1_1488503701918_40166" dir="ltr">Hoang</div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1488503701918_40294"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1488503701918_40226" style="display: block;"> <div style="font-family: Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1488503701918_40225"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1488503701918_40224"> <div dir="ltr" id="yui_3_16_0_ym19_1_1488503701918_40223"> <font size="2" face="Arial" id="yui_3_16_0_ym19_1_1488503701918_40309"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Hoang Nguyen <the_hoang0709@yahoo.com><br> <b><span style="font-weight: bold;">To:</span></b> LTP List <ltp@lists.linux.it> <br> <b><span style="font-weight: bold;">Sent:</span></b> Thursday, 9 February 2017, 8:13<br> <b id="yui_3_16_0_ym19_1_1488503701918_40311"><span style="font-weight: bold;" id="yui_3_16_0_ym19_1_1488503701918_40310">Subject:</span></b> [LTP] memcg_stress on swap off system.<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1488503701918_40239"><br><div id="yiv9217382666"><div id="yui_3_16_0_ym19_1_1488503701918_40238"><div style="color:#000;background-color:#fff;font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;" id="yui_3_16_0_ym19_1_1488503701918_40237"><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194">Hi LTP team,</div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194"><br></div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194">I have this testcase run on my swap off system, and seem that the OOM restart it</div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr"><br></div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr">I'm not sure I understand the entirely purpose of the testcase.</div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr">But it seems the testcases try to allocate all free memory remain on the system,</div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr">keep it for a while, then the main process send the signal to kill child process</div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr"><br></div><div dir="ltr" id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7444"> mem=$(( $mem_free + $swap_free / 2 ))</div><div dir="ltr" id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7445"> mem=$(( mem / 1024 ))</div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr"><br></div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr">In case we have no swap_free, all memory is allocated, and trigger the OOM.</div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr">I've still concerned which should be correct appoarch on swap-off system ? </div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr">(set panic_on_oom=0 to avoid restaring Or the testcase should</div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr">check if swap_free = 0, then we margin 10% of the final $mem ?)</div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr"><br></div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr">(actullay pass/fail metric of this testcase is not so clear with me)</div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr"><br></div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr">Could anyone give me some hints ?</div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr"><br></div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr">Thanks a lot in advance</div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr"><br></div><div id="yiv9217382666yui_3_16_0_ym19_1_1486601722309_7194" dir="ltr">Hoang</div></div></div></div><br><br></div> </div> </div> </div></div></body></html>