Date: Wed, 7 Feb 2007 03:04:05 +0300 From: "Artem Kuchin" <matrix@itlegion.ru> To: =?UTF-8?Q?Andras_G=C3=B3t?= <andrej@antiszoc.hu>, <freebsd-stable@freebsd.org> Subject: Re: Filesystem corruption and bad perfomance with SRCS16 and PAE (raid 5 2TB) Message-ID: <004401c74a4b$8072fa90$0c00a8c0@Artem> References: <001d01c74a27$25afd9d0$0c00a8c0@Artem> <45C8E96C.4030902@antiszoc.hu>
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Andras Gót wrote: > Hi, > > Can you try the AMD64 version on that server? Um.. i have never tried anything AMD in my life. I thought AMD64 is only for AMD CPUs and this is Intel Xeon. Are you really suggesting installing FreeBSD for AMD64 on this Xeon server? Why? Should it help? -- Artem > > Artem Kuchin wrote: >> Hello! >> >> I've got an Intel 2400A server to install FBSD. It has 4GB RAM, >> SRCS16 raid controller, configured 2TB (actually a little less, about >> 1.9TB) RAID-5 array, Xeon 3.2Ghz >> >> Recently i have installed 6.2-R, cvsupped it to 6.2-STABLE >> (today, thanks to included csup utility, very convinient) and >> decided to turn on PAE so i can utilize all 4GB of RAM (w/o PAE >> i am loosing 512MB, too bad). >> >> I did that and then tried to run perl. Got "segmantaion fault". >> Ignored that and tried to copy port tree and then i found >> out that some files are damanged and connot be read. Also, >> directoried could not be deleted because it is not empty, but when >> i do ls in that dir it IS empty. weird. >> Booted single user, did fsck - found a buch of errors, many >> softupdate inconsistencies. >> Fixed them. Rebooted (still in PAE). Run buildworld and >> copy ports tree at the same time. AFter 10 minutes again the same >> errors. >> Built a kernel without PAE, installed, rebooted in single user, >> fixed all filesystems, booted multiuser, run buildworld and copy of >> ports tree. Everything is okay. Did it many times. Still everything >> is ok. >> >> Is it something bad about amr driver working under PAE? >> >> Also, with and after running in PAE (i mean, run PAE kernel, >> then install normal kernel and run it) the kernel compains like this >> _vfs_done(): amrd0 [WRITE(offset=8192, length=1536)] error = 5 >> (no other message before or aftrer this, disks are fully okay >> becuase dd works like a charm) >> >> Also, i did a simple thing >> dd if=/dev/amrd0 of=/dev/null bs=1M (tried 2m, 5m, 512k) >> The throughoutput is about 29MB/sec w/o PAE and 27MB/sec with PAE >> >> Did the same on a very old DUal Pentium III with 3Ware 7xxxx with >> RAID-5 array and older harddrives. Got over 50Mb/sec. >> >> unixbench show terrible number for file perfomance. >> >> Why the heck amr is so slow? >> -- >> Regards, >> Artem Kuchin >> >> _______________________________________________ >> freebsd-stable@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-stable >> To unsubscribe, send any mail to >> "freebsd-stable-unsubscribe@freebsd.org" > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to > "freebsd-stable-unsubscribe@freebsd.org"
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