https://bugs.dragonflybsd.org/https://bugs.dragonflybsd.org/favicon.ico?16293952082013-04-08T06:45:44ZDragonFlyBSD bugtrackerDragonFlyBSD - Bug #2542: Kernel freezes for minutes at a timehttps://bugs.dragonflybsd.org/issues/2542?journal_id=114452013-04-08T06:45:44Zftigeot
<ul></ul><p>This behavior was seen with 8 threads Xeon systems, with both i386 and amd64 DragonFly-3.4rc installations.</p> DragonFlyBSD - Bug #2542: Kernel freezes for minutes at a timehttps://bugs.dragonflybsd.org/issues/2542?journal_id=114462013-04-08T13:08:31Zftigeot
<ul></ul><p>In one freeze instance an xterm was still responsive and I could run some simple utilites.</p>
<p>systat -pv 1:<br /> timer ipi extint user% nice% sys% intr% idle% tokcol token<br /> cpu0 282 8 79 0.0 0.0 0.0 0.8 99.2 0<br /> cpu1 283 0 0 0.0 0.0 0.0 0.0 100.0 0<br /> cpu2 302 1 0 0.0 0.0 0.0 0.0 100.0 0<br /> cpu3 281 0 0 0.0 0.0 100.0 0.0 0.0 6504549 vmobj<br /> cpu4 282 0 0 0.0 0.0 0.0 0.0 100.0 0<br /> cpu5 5 391 4 0 0.8 0.0 0.0 0.0 99.2 54844 mp_toke<br /> cpu6 288 3 0 1.5 0.0 0.0 0.0 98.5 0<br /> cpu7 282 8 0 0.0 0.0 0.0 0.0 100.0 19 pool</p>
<p>top(1) also showed some 'mv' zombie processes; my windowmanager was frozen in 'RUN' state and didn't answer any command.</p> DragonFlyBSD - Bug #2542: Kernel freezes for minutes at a timehttps://bugs.dragonflybsd.org/issues/2542?journal_id=114482013-04-08T16:56:03Zftigeot
<ul></ul><p>A core dump is available in leaf:~ftigeot/crash/crash.issue2542</p> DragonFlyBSD - Bug #2542: Kernel freezes for minutes at a timehttps://bugs.dragonflybsd.org/issues/2542?journal_id=114492013-04-09T05:46:11Zftigeot
<ul><li><strong>% Done</strong> changed from <i>0</i> to <i>10</i></li></ul><p>Setting vm.read_shortcut_enable to 0 has made the freezes disappear.</p> DragonFlyBSD - Bug #2542: Kernel freezes for minutes at a timehttps://bugs.dragonflybsd.org/issues/2542?journal_id=114502013-04-09T07:45:05Zmarino
<ul></ul><p>As an interested 3rd party, does "vm.read_shortcut_enable=1=freeze" imply where the problem lies? And do we know why this phenomenon (apparently) is not seen universally?</p> DragonFlyBSD - Bug #2542: Kernel freezes for minutes at a timehttps://bugs.dragonflybsd.org/issues/2542?journal_id=114692013-04-13T09:18:15Zmarino
<ul></ul><p>I had a machine building that was in "suspended animation" for 4 days.<br />It started working spontaneously after I hit "ctrl-t" to see what state poudriere was in. Apparently this stimulation kicked it back on track. It uses hammer.</p>
<p>ftigeot thinks this is the same thing.<br />If so, bug report confirmed.</p> DragonFlyBSD - Bug #2542: Kernel freezes for minutes at a timehttps://bugs.dragonflybsd.org/issues/2542?journal_id=116232013-10-28T09:57:35Zdaniel.ramosdaniel@ramos.id.au
<ul><li><strong>Description</strong> updated (<a title="View differences" href="/journals/11623/diff?detail_id=1116">diff</a>)</li></ul><p>I was able to reproduce this (or a very similar) bug on a dual-core KVM VPS running DFly 3.4.3. Basically, it was impossible to complete a "make buildworld" due to long and frequent freezes (clock skew, no response to keyboard input or ping). My setup does not use HAMMER, and changing vm.read_shortcut_enable did not seem to make any difference.</p>
<p>Since updating to 3.5 master (by waiting out the freezes), the issue is resolved - I'm now able to make buildworld without any freezing whatsoever.</p> DragonFlyBSD - Bug #2542: Kernel freezes for minutes at a timehttps://bugs.dragonflybsd.org/issues/2542?journal_id=130762017-03-04T10:52:46Zftigeot
<ul><li><strong>Status</strong> changed from <i>New</i> to <i>Resolved</i></li></ul><p>Fixed in more recent DragonFly versions, closing.</p>