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Date:      Wed, 29 Aug 2012 12:20:52 +0400
From:      Andrey Zonov <zont@FreeBSD.org>
To:        Daniel Braniss <danny@cs.huji.ac.il>
Cc:        freebsd-hackers@freebsd.org, Andy Young <ayoung@mosaicarchive.com>
Subject:   Re: Question on io monitoring tools such as gstat and iostat
Message-ID:  <503DD0E4.90000@FreeBSD.org>
In-Reply-To: <E1T6dJJ-000Ljx-F7@kabab.cs.huji.ac.il>
References:  <CAHMRaQcmY_oEvMGKXYtkEU%2Bt7LrSogFT3AbakrRxHakKabNhwg@mail.gmail.com> <503D0308.70109@FreeBSD.org> <E1T6dJJ-000Ljx-F7@kabab.cs.huji.ac.il>

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On 8/29/12 12:07 PM, Daniel Braniss wrote:
>> This is an OpenPGP/MIME signed message (RFC 2440 and 3156)
>> --------------enigCDF012FCB4FC78B4732FDA45
>> Content-Type: text/plain; charset=3DISO-8859-1
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>>
>> On 8/28/12 3:14 PM, Andy Young wrote:
>>> I am relatively new to using IO monitoring tools and wanted to confir=
m =3D
>> I
>>> understand them correctly. If I specify an interval of 5 seconds, my
>>> assumption is that the data displayed is an average over that 5 secon=
d
>>> interval. Is that correct or am I misunderstanding how intervals work=
?
>>> =3D20
>>
>> Yes, you are right.  For more information you can read devstat(3) or
>> sources in src/lib/libdevstat/devstat.c.
>=20
> netstat does not!
>=20

And you are right, but the question was about gstat(8) and iostat(8).
They print units per second, unlike netstat(1), it prints only units
without "per".

--=20
Andrey Zonov


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