Date: Wed, 17 Feb 2010 04:53:20 -0500 From: jhell <jhell@DataIX.net> To: Bartosz Stec <bartosz.stec@it4pro.pl> Cc: freebsd-stable@freebsd.org Subject: Re: ZFS tuning [was: hardware for home use large storage] Message-ID: <alpine.BSF.2.00.1002170450260.66097@pragry.qngnvk.ybpny> In-Reply-To: <4B7BAF59.7040407@it4pro.pl> References: <cf9b1ee01002150049o43fced71ucb5776a0a1eaf4cf@mail.gmail.com> <20100215090756.GA54764@icarus.home.lan> <20100215105000.101326yj01j0f64g@webmail.leidinger.net> <20100215122744.GA57382@icarus.home.lan> <20100215161105.14071eiflhc9le68@webmail.leidinger.net> <4B79BA9C.3020402@quip.cz> <alpine.BSF.2.00.1002152024040.74553@pragry.qngnvk.ybpny> <4B7AD0A3.9080701@barryp.org> <20100216175946.GA98082@icarus.home.lan> <20100216200511.GA95812@server.vk2pj.dyndns.org> <20100216215637.GA4299@icarus.home.lan> <alpine.BSF.2.00.1002170241080.14189@pragry.qngnvk.ybpny> <4B7BA6A5.9020306@it4pro.pl> <20100217093237.fe4b4e14.torfinn.ingolfsen@broadpark.no> <4B7BAF59.7040407@it4pro.pl>
next in thread | previous in thread | raw e-mail | index | archive | help
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wed, 17 Feb 2010 03:56, bartosz.stec@ wrote: > On 2010-02-17 09:32, Torfinn Ingolfsen wrote: >> On Wed, 17 Feb 2010 09:19:49 +0100 >> Bartosz Stec<bartosz.stec@it4pro.pl> wrote: >> >> >>> So here's my reply (last line seems most interesting ;) : >>> >> [...snipped...] >> >>> Illegal division by zero at ./arc_summary.pl line 242. >>> >> FWIW, I also got this line when I ran this script on my idle zfs server. >> > I'm not a PERL programmer (or programmer at all ;), but what I see is script > doesn't check if L2ARC is used at all, so it will always try compute these > lines: > > printf("\tL2 Hit Ratio:\t\t\t%0.2f%%\t%d\n", 100 * ( $l2_hits / ( $l2_hits + > $l2_misses )), $l2_hits ); > printf("\tL2 Miss Ratio:\t\t\t%0.2f%%\t%d\n", 100 * ( $l2_misses / ( $l2_hits > + $l2_misses )), $l2_misses ); > printf("\tL2 Feeds Ratio:\t\t\t%0.2f%%\t%d\n", 100 * ( $l2_feeds / ( $l2_hits > + $l2_misses )), $l2_feeds ); > > Without active L2ARC it will always generate divide at zeo error, so it seems > that additional check for usable L2ARC values is needed at first place. > > Thanks for reporting this. As I am usually on a system that is using a L2ARC I wouldn't have noticed it. I should have this fixed in about 10 hours. But as I am writing this email I am heading off to bed, work calls in the morning. Check back tomorrow night for a updated version and adjust the current to your liking for the moment. ;) Thanks again. - -- jhell -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (FreeBSD) iQEcBAEBAgAGBQJLe7yXAAoJEJBXh4mJ2FR+NyAH/jBS6W0b9tZZVOm5nQ+kmjG2 CZxWqkkNe6ldQ3ggdmSNlz324Vr+6ZpHvLHjlpRDloyCEX2//9exzpDAMY/3yYL/ 4hrY7WeaAVDhwaCmvVxyiuP3QFnF1ENl+mMBxpbc6sYoYpDJ1900qh/0FFFjIRxm V9vaBWl1vYzLxiAp55b+UBLI5NNPEKTJgxQMBAflh24A3KuDtNijS23EEeA/g2vq eZorXS/55n5ZJxVWXMOn0i9IKdpn0sYPu5xoMWCihKxN6KRnighBfr9BIjpXZEEC rktEX4wY4bOMpULQJff/9MAjlisq5jvsY7JulYHX22D+HjC4/Z3TLQ/RVCI2d5Q= =GRta -----END PGP SIGNATURE-----
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?alpine.BSF.2.00.1002170450260.66097>