Re: 2.5TB Migration from SATA to SSD disks - PostgreSQL 9.2 - Mailing list pgsql-general

From Patrick B
Subject Re: 2.5TB Migration from SATA to SSD disks - PostgreSQL 9.2
Date
Msg-id CAJNY3ivJcKi9SLLeprEhMiBO6XiX25d0gBNB8Yn1caQ+SBGwYw@mail.gmail.com
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In response to Re: 2.5TB Migration from SATA to SSD disks - PostgreSQL 9.2  (Jim Nasby <Jim.Nasby@BlueTreble.com>)
Responses Re: 2.5TB Migration from SATA to SSD disks - PostgreSQL 9.2  (Scott Marlowe <scott.marlowe@gmail.com>)
List pgsql-general


2016-09-11 14:09 GMT+12:00 Jim Nasby <Jim.Nasby@bluetreble.com>:
On 9/8/16 3:29 PM, David Gibbons wrote:

    Isn't this heading in the wrong direction?   We need to be more
    precise than 0 (since 0 is computed off of rounded/truncated time
    stamps), not less precise than 0.

    Cheers,

    Jeff



Hmm, You may be right, reading it 4 more times for comprehension it
looks like it should be set to -1 not 1.

Not according to my man page:

       --modify-window
              When comparing two timestamps, rsync treats the timestamps as being equal if they differ by no more than the modify-window value.  This is normally 0 (for an exact match), but you
              may find it useful to set this to a larger value in some situations.  In particular, when transferring to or from an MS Windows FAT  filesystem  (which  represents  times  with  a
              2-second resolution), --modify-window=1 is useful (allowing times to differ by up to 1 second).


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Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
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So... what do u guys recommend? which options should I use?

Patrick

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