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Date:      Fri, 18 Nov 2016 15:37:51 +0100
From:      "Christoph P.U. Kukulies" <kuku@kukulies.org>
To:        "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject:   testing SSD performance
Message-ID:  <9966b2a4-8812-3de1-8a9e-05bc96c8ef3c@kukulies.org>

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I was running an older FreeBSD (9.2) for quite a while now with the root 
FS (and swap) an an SSD drive (100GB).

While upgrading the system to 11.0 and while observing quit elong 
buildworld times I'm wondering myself if my SSD possibly might have 
gotten degraded
  some extent. I've read that SSD tend to run slow on writes over time, 
especially when no provisions were taken to e.g. fill them up just up to 
2/3 of their max capacity to leave room for firmware storage management.


Is there a quick tool to test overall performance (disk i/o and 
processor overall system speed)?


--

Christoph





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