On Wed, 2014-08-20 at 06:15 -0700, redtailjason wrote:
> Hello and good morning. We are running into some delays that we are trying to
> pin down a root cause for.
>
> Below are some examples. Within the examples, you can see that the
> check_bayes: scan is consuming most of the timing. Does anyone have any
> suggests on what to look at? We use 3.3.2. We have eight scanners setup to
> handle the scanning with 5GB RAM and 4 CPUs each. Volume is 250K - 500K per
> day.
That volume means throughput of about 350 messages per minute, 5.8 per
second. Sounds reasonable for 8 dedicated scanners.
Your samples are showing overall timings between about 90 seconds and
more than 2 minutes. Which means processing commonly takes less time,
and these are some extreme cases -- unless you really do have 50-100
busy processes per machine.
How many such long-running processes do you see, how frequent are they?
Also, you mentioned you are using the MySQL backend for Bayes. You did
not add any further detail, though.
Do you have dedicated MySQL servers for Bayes? Or does each scanner
machine run a local MySQL server? Do they share / sync databases
somehow?
Please elaborate on your environment, in particular everything
concerning Bayes.
--
char *t="\10pse\0r\0dtu\0.@ghno\x4e\xc8\x79\xf4\xab\x51\x8a\x10\xf4\xf4\xc4";
main(){ char h,m=h=*t++,*x=t+2*h,c,i,l=*x,s=0; for (i=0;i<l;i++){ i%8? c<<=1:
(c=*++x); c&128 && (s+=h); if (!(h>>=1)||!t[s+h]){ putchar(t[s]);h=m;s=0; }}}
