Date: Wed, 18 May 2011 22:12:40 +0100 From: krad <kraduk@gmail.com> To: Devin Teske <dteske@vicor.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Buildworld Benchmarks Message-ID: <BANLkTimjQAYR0CEVV%2B6um-_Z3JggRXNn1Q@mail.gmail.com> In-Reply-To: <022d01cc14f5$a37ef010$ea7cd030$@vicor.com> References: <AcwU9GI8hsLjl/i9SKa0wpjBStrtKg==> <022d01cc14f5$a37ef010$ea7cd030$@vicor.com>
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On 18 May 2011 01:50, Devin Teske <dteske@vicor.com> wrote: > Hi List, > > What's the fastest anyone has every completed buildworld on a single > machine? > > The reason I ask is because we just got some new hardware in and decided to > benchmark it using buildworld. > > Just as a quick test, we decided to perform "make -j 48 buildworld". We > finished > in approximately 9 minutes. > > I think that we can improve upon that, but am having a bit of difficulty. > > Can anyone offer any pointers in how to achieve the fastest buildworld > possible? > No particular reason... we're just trying to push the boundaries of what's > possible. > > For reference the machine we're compiling on is a dual-socket Nehalem Xeon > (six-core per proc; HTT enabled; 24 total CPUs presented by APIC) with 48GB > of > RAM, an LSI MegaSAS RAID controller, and an LSI 2Gbps Fibre Channel HBA > going to > an 8TB NEC D-4 array. > > ASIDE: Doing the same buildworld on a 4-disk ZFS raidz yielded > approximately > 11-minutes. Performing the buildworld on the NEC D-4 over the 2Gbps FC HBA > yielded approximately 12 minutes. And for some unknown reason, performing > buildworld on tmpfs yielded 13 minutes. > > We thought going tmpfs would make things faster, but that resulted in over > 13 > minutes (huh? you'd think a RAM disk would be smoking compared to even the > SSDs > that we used to achieve ~9 min; do note that we did make sure to nullfs > mount a > tmpfs-based directory onto /usr/obj -- though the performance of that > nullfs > mount might have hurt the test, not sure). > -- > Devin > > _____________ > > The information contained in this message is proprietary and/or > confidential. If you are not the intended recipient, please: (i) delete the > message and all copies; (ii) do not disclose, distribute or use the message > in any manner; and (iii) notify the sender immediately. In addition, please > be aware that any message addressed to our domain is subject to archiving > and review by persons other than the intended recipient. Thank you. > _____________ > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org" > to make it fair you would have to have a generic src.conf and specify whether you used clang or gcc. As well as the release as well
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