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Hi,</div>
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Hi,</div>
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I forgot to mention that i am running LTP on VM and i am getting error like <span style="color: rgb(50, 49, 48); font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255); display: inline !important">futex_wait
and select tests are "<b>$SYSCALL </b></span><span style="color: rgb(50, 49, 48); font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", sans-serif; font-size: 14.6667px; background-color: rgb(255, 255, 255); display: inline !important"><b>slept
too long" and the test is getting failed because vm is not getting CPU time as expected.</b></span></div>
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<span style="color: inherit; font-family: inherit; font-size: 14.6667px; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit;">Is there any that i can configure or manage this cpu time related issue for now as i am running on slower
machine the time constrain doesnt value for me...i just need test to be passed...is there any way to do so??</span><br>
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<span style="font-size: 14.6667px;">Kindly suggest.</span></div>
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<span style="font-size: 14.6667px;">Thanks!</span></div>
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________________________________________<br>
From: Martin Doucha <mdoucha@suse.cz><br>
Sent: Tuesday, April 14, 2020 3:35 PM<br>
To: Pankaj Vinadrao Joshi<br>
Cc: ltp@lists.linux.it<br>
Subject: Re: [LTP] LTP testcase analysis<br>
<br>
On 14. 04. 20 10:45, Pankaj Vinadrao Joshi wrote:<br>
> Hi,<br>
> i am running LTP on x86 with 5.4.3 kernel.i gave $ ./runltp command to<br>
> run the complete LTP but found some failures,like<br>
> oom01,futex_wait05,select04 etc.<br>
><br>
> When i tried to run single test some of them turns into PASS which<br>
> earlier got failed.like oom01 was failed then i gave coomand $./runltp<br>
> -s oom01 and after that it got pass.<br>
><br>
> why it could be happened,any specific reason,if you know please suggest??<br>
<br>
The most common errors for futex_wait and select tests are "$SYSCALL<br>
slept too long". These errors usually happen when you run the test in a<br>
VM on overloaded host because the VM doesn't get enough CPU time to wake<br>
the test process up within time limit.<br>
<br>
OOM tests have issues in the mlock() test case. OOM killer is blocked by<br>
mlock() which usually results in the parent shell being killed instead<br>
of the expected OOM victim. This is a known kernel bug with some denial<br>
of service potential but so far nobody came up with a fix that wouldn't<br>
create memory corruption bugs.<br>
<br>
That's all I can tell you without seeing the actual test output.<br>
<br>
--<br>
Martin Doucha mdoucha@suse.cz<br>
QA Engineer for Software Maintenance<br>
SUSE LINUX, s.r.o.<br>
CORSO IIa<br>
Krizikova 148/34<br>
186 00 Prague 8<br>
Czech Republic</div>
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