If you want a faster Kolab, read this.

[Brady, Mike]

On 2015-09-11 12:23, Paul Bronson wrote: 

> Guys, 
> 
> I am thinking my entropy level may be low? Can some of you run: 
> 
> cat /proc/sys/kernel/random/entropy_avail 
> 
> 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) 
> 
> I also have ran: 
> 
> cat /dev/urandom | rngtest -c 1000 
> 
> and got: 
> 
> rngtest: starting FIPS tests... 
> rngtest: bits received from input: 20000032 
> rngtest: FIPS 140-2 successes: 999 
> rngtest: FIPS 140-2 failures: 1 
> rngtest: FIPS 140-2(2001-10-10) Monobit: 0 
> rngtest: FIPS 140-2(2001-10-10) Poker: 0 
> rngtest: FIPS 140-2(2001-10-10) Runs: 1 
> rngtest: FIPS 140-2(2001-10-10) Long run: 0 
> rngtest: FIPS 140-2(2001-10-10) Continuous run: 0 
> rngtest: input channel speed: (min=26.272; avg=628.845; max=19073.486)Mibits/s 
> rngtest: FIPS tests speed: (min=73.928; avg=108.740; max=130.640)Mibits/s 
> rngtest: Program run time: 206182 microseconds 
> 
> 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: https://issues.kolab.org/show_bug.cgi?id=5219 [1] 
> 
> This is centos 6 by the way..kolab 3.4

Paul, 

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. 

[root at kolab04 ~]# cat /proc/sys/kernel/random/entropy_avail 
130 
[root at kolab04 ~]# cat /dev/urandom | rngtest -c 1000 
rngtest 2 
Copyright (c) 2004 by Henrique de Moraes Holschuh 
This is free software; see the source for copying conditions. There is
NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PAR
TICULAR PURPOSE. 

rngtest: starting FIPS tests... 
rngtest: bits received from input: 20000032 
rngtest: FIPS 140-2 successes: 998 
rngtest: FIPS 140-2 failures: 2 
rngtest: FIPS 140-2(2001-10-10) Monobit: 0 
rngtest: FIPS 140-2(2001-10-10) Poker: 0 
rngtest: FIPS 140-2(2001-10-10) Runs: 2 
rngtest: FIPS 140-2(2001-10-10) Long run: 0 
rngtest: FIPS 140-2(2001-10-10) Continuous run: 0 
rngtest: input channel speed: (min=1.420; avg=45.292;
max=19073.486)Mibits/s 
rngtest: FIPS tests speed: (min=36.893; avg=90.109; max=95.367)Mibits/s 
rngtest: Program run time: 643110 microseconds

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. 

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?


Regards 

Mike 
 

Links:
------
[1] https://issues.kolab.org/show_bug.cgi?id=5219
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