Date: Sat, 07 Jun 2008 12:03:32 +0200 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-hackers@freebsd.org Subject: Re: Is there any way to increase the KVM? Message-ID: <g2dmdo$98u$1@ger.gmane.org> In-Reply-To: <20080607060521.GB3462@garage.freebsd.pl> References: <6a7033710805302252v43a7b240x66ca3f5e3dd5fda4@mail.gmail.com> <20080603135308.GC3434@garage.freebsd.pl> <6a7033710806032317g4dbe8845h26a1196016b9c440@mail.gmail.com> <86zlq140x0.fsf@ds4.des.no> <6a7033710806041053g4a5c2fdftd7202b708bff363c@mail.gmail.com> <20080605062728.GA4278@garage.freebsd.pl> <g28rhe$32m$1@ger.gmane.org> <20080607060521.GB3462@garage.freebsd.pl>
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[-- Attachment #1 --] Pawel Jakub Dawidek wrote: > On Thu, Jun 05, 2008 at 04:00:13PM +0200, Ivan Voras wrote: >> At the risk of sounding repetitive, can you try a simple test on your >> ZFS pools, to see if you can panic the kernel? Do this: >> >> * install blogbench and bonnie++ from ports/benchmarks >> * run: >> blogbench -c 100 -d . -i 30 -r 50 -W 10 -w 10 >> bonnie++ -d . -s 16G -n 80 >> in parallel, until completion or crash. It shouldn't take too long to >> complete the above benchmarks, so you probably won't invest too much >> time in it even if it doesn't crash. > > Both completed successfully (i386, 1GB of RAM, dual core CPU). Perfect! > Can you now go and revert all the FUD you spread? You probably need to > invest much more time than that. Right, I'm just an evil guy trying to badmouth the system that's a large chunk of my bread and butter because I'm bored. :) What should I say, "sorry for posting bug reports?" and "sorry for writing docs on which features of (current) ZFS to avoid to sidestep crashes?" Actually I have a suspicion it's the second one (in ZFS wiki pages) you'd like cleared up, but keep in mind you were off the lists for a time and you are the principal source of information on our ZFS implementation. At the time there was a lot of incorrect information floating about in the mailing lists, where people (me included) were doing voodoo computing - trying every knob there was to see if it made a difference - and I tried to document whatever seemed to work to avoid answering repetitive questions posted on the lists. I will be among the first to try the new patches (depending on the time zone, probably, and we're pretty close there) and, unfortunately, I will complain and ask guidance if things don't work. On the other hand, if they do work, I'll a) add big honking banners with bells and whistles proclaiming that it finally works in (HEAD | RELENG_7), optionally praising you to heaven for bringing it to completion[*], and b) buy you a BIGNUM of beers next time we meet. [*] really, no sarcasm intended. It *was* an enormous job and if it works, you'd earn it! In the time I spent trying to make it work I saw from first-hand experience how great the whole idea of ZFS is and how useful it is in daily operation. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFISlz1ldnAQVacBcgRArQ1AJ9h6cuhdJ7KGdd+BBSJt0/4bMKgnwCg7ZYR qD4K5rfpUUU9/d6X7xF0KBM= =2roW -----END PGP SIGNATURE-----help
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