Date: Tue, 06 Feb 2007 21:47:40 +0100 From: =?UTF-8?B?QW5kcmFzIEfDs3Q=?= <andrej@antiszoc.hu> To: freebsd-stable@freebsd.org Subject: Re: Filesystem corruption and bad perfomance with SRCS16 and PAE (raid 5 2TB) Message-ID: <45C8E96C.4030902@antiszoc.hu> In-Reply-To: <001d01c74a27$25afd9d0$0c00a8c0@Artem> References: <001d01c74a27$25afd9d0$0c00a8c0@Artem>
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Hi, Can you try the AMD64 version on that server? Regards, Andras 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" >
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