Date: Wed, 13 Feb 2013 18:32:21 +1030 From: Shane Ambler <FreeBSD@ShaneWare.Biz> To: Philipp-Joachim Ost <pj@smo.de> Cc: freebsd-stable@freebsd.org, CeDeROM <cederom@tlen.pl> Subject: Re: 9.1 AMD64 multitasking efficiency low Message-ID: <511B488D.9080809@ShaneWare.Biz> In-Reply-To: <511AC154.80409@smo.de> References: <CAFYkXjkACs=2RaCb_BaoNT6PM%2B5gkQSGoKP5G4bR_284v_Eoig@mail.gmail.com> <511AC154.80409@smo.de>
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I have two WD's a 1TB and a 2TB. Upgraded to 9.1 three days ago and don't think it is any worse than 9.0. I find things slow down if two things are trying to access the drive at the same time and when I do get some swapping it gets unbearable. One thing that always annoyed me was the security scans that start early morning, they make any tinderbox builds I leave running grind to a halt. They also run shortly after startup - and they show little cpu usage. Disable them by adding to /etc/periodic.conf daily_status_security_chksetuid_enable="NO" daily_status_security_neggrpperm_enable="NO" I'm sure the first one is a long scan but haven't verified the second. I think I recall the aio module made a difference for me. I believe kldload aio will make it active straight away - if not aio_load="YES" in /etc/loader.conf to load at boot I have a desktop machine - ASUS P8H61-M/LE corei5 8GB ada0 at ahcich0 bus 0 scbus0 target 0 lun 0 ada0: <WDC WD20EARX-00PASB0 51.0AB51> ATA-8 SATA 3.x device ada0: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes) ada0: Command Queueing enabled ada0: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C) ada0: Previously was known as ad4 ada1 at ahcich4 bus 0 scbus2 target 0 lun 0 ada1: <WDC WD10EARS-00Y5B1 80.00A80> ATA-8 SATA 2.x device ada1: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes) ada1: Command Queueing enabled ada1: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C) ada1: Previously was known as ad8
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