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<p>On 2015-09-11 12:23, Paul Bronson wrote:</p>
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<div dir="ltr">Guys,
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<div>I am thinking my entropy level may be low? Can some of you run:</div>
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<div>cat /proc/sys/kernel/random/entropy_avail</div>
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<div>and tell me what you get? I am around 132-178 on average. pool size is default 4096 (this is a container on a virtualizer)</div>
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<div>I also have ran:</div>
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<div>cat /dev/urandom | rngtest -c 1000</div>
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<div>and got:</div>
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<div>rngtest: starting FIPS tests...</div>
<div>rngtest: bits received from input: 20000032</div>
<div>rngtest: FIPS 140-2 successes: 999</div>
<div>rngtest: FIPS 140-2 failures: 1</div>
<div>rngtest: FIPS 140-2(2001-10-10) Monobit: 0</div>
<div>rngtest: FIPS 140-2(2001-10-10) Poker: 0</div>
<div>rngtest: FIPS 140-2(2001-10-10) Runs: 1</div>
<div>rngtest: FIPS 140-2(2001-10-10) Long run: 0</div>
<div>rngtest: FIPS 140-2(2001-10-10) Continuous run: 0</div>
<div>rngtest: input channel speed: (min=26.272; avg=628.845; max=19073.486)Mibits/s</div>
<div>rngtest: FIPS tests speed: (min=73.928; avg=108.740; max=130.640)Mibits/s</div>
<div>rngtest: Program run time: 206182 microseconds</div>
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<div>You hardcore OS guys - does this mean anything to you, and could this possibly be the problem of my slower SASL auth's as described in this thread, and the bug: <a href="https://issues.kolab.org/show_bug.cgi?id=5219">https://issues.kolab.org/show_bug.cgi?id=5219</a></div>
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<div>This is centos 6 by the way..kolab 3.4</div>
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<p>Paul,</p>
<p>My system is a Centos 6.6 (migrating to Centos 7.1 over the next week time permitting) KVM guest running on Centos 6.7 host. </p>
<p><span>[root@kolab04 ~]# cat /proc/sys/kernel/random/entropy_avail <br />130 <br />[root@kolab04 ~]# cat /dev/urandom | rngtest -c 1000 <br />rngtest 2 <br />Copyright (c) 2004 by Henrique de Moraes Holschuh <br />This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PAR<br />TICULAR PURPOSE. <br /> <br />rngtest: starting FIPS tests... <br />rngtest: bits received from input: 20000032 <br />rngtest: FIPS 140-2 successes: 998 <br />rngtest: FIPS 140-2 failures: 2 <br />rngtest: FIPS 140-2(2001-10-10) Monobit: 0 <br />rngtest: FIPS 140-2(2001-10-10) Poker: 0 <br />rngtest: FIPS 140-2(2001-10-10) Runs: 2 <br />rngtest: FIPS 140-2(2001-10-10) Long run: 0 <br />rngtest: FIPS 140-2(2001-10-10) Continuous run: 0 <br />rngtest: input channel speed: (min=1.420; avg=45.292; max=19073.486)Mibits/s <br />rngtest: FIPS tests speed: (min=36.893; avg=90.109; max=95.367)Mibits/s <br />rngtest: Program run time: 643110 microseconds<br /><br /></span></p>
<p>I do not have the slow downs that you describe and do not see the number of logins that you see on selecting every email.</p>
<p>How have you determined the problem is that the IMAP logins are slow? Do you have some numbers and something that I could run to compare against?</p>
<p>Regards</p>
<p>Mike</p>
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