To 6.3 or to 7.0 that is the question?

Mike Tancsa mike at
Fri Jan 18 14:20:29 PST 2008

At 04:48 PM 1/18/2008, Mike Tancsa wrote:
>At 04:11 PM 1/18/2008, Steven Hartland wrote:
>>I know 7 has had a lot of work done on locking and ULE but are there
>>any other reasons to go for that instead of 6.3? Conversely are there
>>any reason which would point away from 7 such as stability issues?
>Our production experiences with 7 have been good so far. I just did 
>a rather busy customer mail server this morning and so far so good. 
>I migrated it from 6.3 to 7 and am just finishing the portupgrade 
>process.  We have also been running a 7.x box in our spam/virus 
>scanning cluster since late Nov 2007 and no issues there either.  We 
>havent done any benchmarks to see if its faster than the 6.x boxes, 
>but its certainly stable so far and seems to at least keep up to the 
>other boxes.

The 7.x box is a little faster according to my colleague. Below are 
the average scanning times per message.  Assuming that in a 24hr 
period each box will get approximately the same mix of spam, the 
times below are how long an average scan took. He also said the 7x 
box does perform better under high load when a large blast comes in 
all at once.

Lines: 15643    Total: 61114.90 Average: 3.91
Lines: 15446    Total: 61079.90 Average: 3.95
Lines: 15633    Total: 62584.70 Average: 4.00
Lines: 15481    Total: 60892.80 Average: 3.93
Lines: 15515    Total: 60714.40 Average: 3.91

Lines: 15603    Total: 58300.40 Average: 3.74

As well as spam scanning, they do AV stuff as well.


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