Date: Tue, 14 Feb 2006 11:52:46 +0100 From: Valerio daelli <valerio.daelli@gmail.com> To: freebsd-alpha@freebsd.org Subject: Error in sysctl realmem on alpha Message-ID: <27dbfc8c0602140252o6ae09399taaedac8266c09c64@mail.gmail.com>
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Hi we have an AlphaServer DS10 with FreeBSD 5.4 with 256Mb of RAM. root@webgate:~ uname -a FreeBSD webgate.ifom-ieo-campus.it 5.4-RELEASE-p8 FreeBSD 5.4-RELEASE-p8 #0: Thu Nov 17 13:13:48 CET 2005 =20 eldon@webgate.ifom-firc.it:/usr/src/sys/alpha It looks like the sysctl of realmem is a bit to high: root@webgate:~ sysctl -a|egrep '(real|phys|user)mem' hw.physmem: 265486336 hw.usermem: 225648640 hw.realmem: 2174864064512 but the realmem of dmesg is right root@webgate:~ dmesg |grep mem real memory =3D 265486336 (253 MB) avail memory =3D 250503168 (238 MB) Maybe everything is due to a shift of 13 bits in /usr/src/sys/alpha/alpha/machdep.c: realmem =3D alpha_ptob(Maxmem) and the realmem is again shifted 13 bits (so it is shifted twice instead of once) in /usr/src/sys/kern/kern_mib.c: val =3D ctob(realmem); Sorry I am not really sure I am not so strong in C and kernel programming is a bit far from my knowledge. Thanks Valerio Daelli
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