Date: Thu, 16 Feb 2012 18:23:15 -0000 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Alex Goncharov" <alex-goncharov@comcast.net>, <freebsd-hackers@freebsd.org> Subject: Re: 8 to 9: A longer wait early in the boot of a (damaged) CompaqPresario Message-ID: <3C638A871829485CB0A9B3285CA23352@multiplay.co.uk> References: <E1Ry5E4-000HRq-ED@hans3>
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----- Original Message -----
From: "Alex Goncharov" <alex-goncharov@comcast.net>
> About a week ago, I made a jump and upgraded the system's FreeBSD from
> version 8 to 9. Everything is great (I am typing this message on that
> machine now) but the boot pause after the (looking new in 9) boot menu
> is *much* longer now -- it will show the '\' character and wait for,
> subjectively, half a minute before putting anything else on the
> screen.
Two things spring to mind which could help:
1. The reduce the slice sampling size in sys/boot/zfs/zfs.c which was
increased recently
2. disable boot time mem tests using the attached patch
Patches for both from 8.2-RELEASE attached. For #2 you also need the
following in /boot/loader.conf
hw.memtest.tests="0"
Regards
Steve
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--- sys/amd64/amd64/machdep.c 2011/06/08 08:12:15 222853=0A=
+++ sys/amd64/amd64/machdep.c 2011/07/30 13:33:05 224516=0A=
@@ -1309,7 +1309,7 @@=0A=
{=0A=
int i, physmap_idx, pa_indx, da_indx;=0A=
vm_paddr_t pa, physmap[PHYSMAP_SIZE];=0A=
- u_long physmem_tunable;=0A=
+ u_long physmem_tunable, memtest, tmpul;=0A=
pt_entry_t *pte;=0A=
struct bios_smap *smapbase, *smap, *smapend;=0A=
u_int32_t smapsize;=0A=
@@ -1372,6 +1372,14 @@=0A=
Maxmem =3D atop(physmem_tunable);=0A=
=0A=
/*=0A=
+ * By default keep the memtest enabled. Use a general name so that=0A=
+ * one could eventually do more with the code than just disable it.=0A=
+ */=0A=
+ memtest =3D 1;=0A=
+ if (TUNABLE_ULONG_FETCH("hw.memtest.tests", &tmpul))=0A=
+ memtest =3D tmpul;=0A=
+=0A=
+ /*=0A=
* Don't allow MAXMEM or hw.physmem to extend the amount of memory=0A=
* in the system.=0A=
*/=0A=
@@ -1433,6 +1441,8 @@=0A=
goto do_dump_avail;=0A=
=0A=
page_bad =3D FALSE;=0A=
+ if (memtest =3D=3D 0)=0A=
+ goto skip_memtest;=0A=
=0A=
/*=0A=
* map page into kernel: valid, read/write,non-cacheable=0A=
@@ -1470,6 +1480,7 @@=0A=
*/=0A=
*(int *)ptr =3D tmp;=0A=
=0A=
+skip_memtest:=0A=
/*=0A=
* Adjust array of valid/good pages.=0A=
*/=0A=
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--- sys/boot/zfs/zfs.c.orig 2011-10-20 18:15:29.966685430 +0000=0A=
+++ sys/boot/zfs/zfs.c 2011-10-20 18:18:22.291033636 +0000=0A=
@@ -45,6 +45,12 @@=0A=
=0A=
#include "zfsimpl.c"=0A=
=0A=
+/*=0A=
+ * For GPT this should be 128 but leads to 50+ second delay in BTX =
loader so=0A=
+ * we use the original 4 pre r198420 by default for the boot process=0A=
+ */=0A=
+#define ZFS_MAX_SLICES 4=0A=
+=0A=
static int zfs_open(const char *path, struct open_file *f);=0A=
static int zfs_write(struct open_file *f, void *buf, size_t size, =
size_t *resid);=0A=
static int zfs_close(struct open_file *f);=0A=
@@ -415,7 +421,7 @@=0A=
if (vdev_probe(vdev_read, (void*) (uintptr_t) fd, 0))=0A=
close(fd);=0A=
=0A=
- for (slice =3D 1; slice <=3D 128; slice++) {=0A=
+ for (slice =3D 1; slice <=3D ZFS_MAX_SLICES; slice++) {=0A=
sprintf(devname, "disk%dp%d:", unit, slice);=0A=
fd =3D open(devname, O_RDONLY);=0A=
if (fd =3D=3D -1) {=0A=
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