Re: 57##-SS1 option 42 HA Journal Performance

[Jack Kingsley <iseriesflorida@xxxxxxxxx>]

Rob, you pull out the 4 ssd's.

Also, the option 42, is it due to disk caching.

On Thu, Apr 1, 2010 at 2:35 PM, <rob@xxxxxxxxx> wrote:

> We are a BPCS shop.
> We are also a Mimix shop.
> We were trying to reduce the time of our month end close.  Disk bound.
> 52 disk drives of which 48 are 140GB HDD's and 4 are SSD's.
>
> We did the CHGPF on all BPCS files to say unit(*SSD), saved the library,
> deleted it, and restored it to ensure they were on the SSD's.
> Month end improved, but not nearly as much as we hoped.
>
> Then we installed 57##-SS1 option 42 HA Journal Performance.  Followed
> recommended instructions to use journal caching attributes, talked to
> Mimix and got it all set up.  Reapplied existing cume and no further PTF's
> were installed therefore we could install this LPP without having to do a
> disruptive IPL.  Put it on a day or so before month end to allow us three
> month ends to test before 70 day license key expired.
> In case you stink at math try this:
> STRSQL
> values days('2010-06-02') - days('2010-03-30')
> returns 64, which is less than 70
>
> Ran month end.  Wow!  Like, freaking wow!
>
> Process   Jan, pre anything  Feb, w/SSD   March, w/opt 42 + SSD
> CST600C   90 minutes         89 minutes   56 minutes
> INV900C   115 minutes        108 minutes  52 minutes
> of which
> INV900    98 minutes         87 minutes   35 minutes
>
> According to our journals the number of transactions beaten into ITH by
> INV900 is 29,940,735 upon 18,975 items.
>
> Got a lot more bang for the buck with the option 42 versus the SSD's
> ***IF*** you are journalling.
>
>
>
>
>
> Rob Berendt
> --
> Group Dekko Services, LLC
> Dept 01.073
> Dock 108
> 6928N 400E
> Kendallville, IN 46755
> http://www.dekko.com
>
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