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Date:      Tue, 1 Jan 2019 06:30:29 +0100
From:      Kurt Jaeger <pi@freebsd.org>
To:        Lorenzo Salvadore <phascolarctos@protonmail.ch>
Cc:        FreeBSD Ports <freebsd-ports@freebsd.org>
Subject:   Re: Poudriere very slow when building in i386 jails
Message-ID:  <20190101053029.GK84895@home.opsec.eu>
In-Reply-To: <0IcOmQLiDHIXsW_vzCi2RBHRHl8vWpGQn9M_G6T-wm4OZKWWij8JkKol9780Ou45l4ycEqeecG-DGRL73St2EF_MmSz5rc_PL-cN_ODQ4E8=@protonmail.ch>
References:  <h0qL7ZxuWdrOsQjD1ZDtWj4p60PByxerxqW1dBRpmSvnTnR36x1aOKwgsoOo3E7q-wQJ1cl4x4wCVe-hwXbCvxmQgCv8jWa5iNEcOLPL-2M=@protonmail.ch> <20181231195011.GI84895@home.opsec.eu> <v4N4zn61TrsCnHFK4V95TqNouhMaAYCLHZ2gM08W3QLMAKX3f4Lw8VPLhbsDdmZtPG2k6r8L2OjgWsRXvmLEqm03oqnlpgk3AZZtd1xAhFE=@protonmail.ch> <20181231211516.GJ84895@home.opsec.eu> <0IcOmQLiDHIXsW_vzCi2RBHRHl8vWpGQn9M_G6T-wm4OZKWWij8JkKol9780Ou45l4ycEqeecG-DGRL73St2EF_MmSz5rc_PL-cN_ODQ4E8=@protonmail.ch>

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Hi!

> > SSD or spinning drives ?
> >
> > > I have 3.6 Gb of RAM and 2 Gb of swap.
> >
> > Run top and check the state of ARC.
> >
> > I think it needs much more RAM.
> 
> I don't think it is a SSD (it has cylinders, sectors etc.).
> If you can tell me a way to check it I will be glad to do it.
> This is the output of diskinfo -v /dev/ada0 in case it answers the question:
> 
> /dev/ada0
> 	512         	# sectorsize
> 	320072933376	# mediasize in bytes (298G)
> 	625142448   	# mediasize in sectors
> 	4096        	# stripesize
> 	0           	# stripeoffset
> 	620181      	# Cylinders according to firmware.
> 	16          	# Heads according to firmware.
> 	63          	# Sectors according to firmware.
> 	HGST HTS545032A7E680	# Disk descr.

This is a HGST drive, spinning, no SSD.

> 	TMA45DZG06UX8R	# Disk ident.
> 	No          	# TRIM/UNMAP support
> 	5400        	# Rotation rate in RPM
> 	Not_Zoned   	# Zone Mode
> 
> These are are lines of top's header (poudriere is building one of the ports I think
> might be problematic):
> 
> CPU: 32.8% user,  4.8% nice,  8.3% system,  0.5% interrupt, 53.5% idle
> Mem: 1200M Active, 332M Inact, 32M Laundry, 2084M Wired, 187M Free
> ARC: 1122M Total, 649M MFU, 323M MRU, 1371K Anon, 16M Header, 133M Other
>      401M Compressed, 1064M Uncompressed, 2.65:1 Ratio

So, when it's slow during builds, it's most probably swapping.

-- 
pi@FreeBSD.org         +49 171 3101372              2 years to go !



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