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Re: How clear the cache on postgresql? - Mailing list pgsql-general

From John R Pierce
Subject Re: How clear the cache on postgresql?
Date
Msg-id 7fbbcc3d-695b-c864-314e-ca95e631b888@hogranch.com
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In response to Re: How clear the cache on postgresql?  (Michael Nolan <htfoot@gmail.com>)
Responses Re: How clear the cache on postgresql?  (Adam Tauno Williams <awilliam@whitemice.org>)
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On 11/24/2017 11:43 AM, Michael Nolan wrote:
> There are so many different levels of caching going on--within 
> Postgresql, within the OS, within a disk array or SAN, and at the 
> individual drive--that there may no longer be a meaningful way to 
> perform this measurement.


generally, power cycling the server will flush all the hardware caches 
AND the OS cache.


-- 
john r pierce, recycling bits in santa cruz

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