----- Original Message -----
From: "Alex Goncharov" <alex-goncha...@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
+++ sys/amd64/amd64/machdep.c 2011/07/30 13:33:05 224516
@@ -1309,7 +1309,7 @@
{
int i, physmap_idx, pa_indx, da_indx;
vm_paddr_t pa, physmap[PHYSMAP_SIZE];
- u_long physmem_tunable;
+ u_long physmem_tunable, memtest, tmpul;
pt_entry_t *pte;
struct bios_smap *smapbase, *smap, *smapend;
u_int32_t smapsize;
@@ -1372,6 +1372,14 @@
Maxmem = atop(physmem_tunable);
/*
+ * By default keep the memtest enabled. Use a general name so that
+ * one could eventually do more with the code than just disable it.
+ */
+ memtest = 1;
+ if (TUNABLE_ULONG_FETCH("hw.memtest.tests", &tmpul))
+ memtest = tmpul;
+
+ /*
* Don't allow MAXMEM or hw.physmem to extend the amount of memory
* in the system.
*/
@@ -1433,6 +1441,8 @@
goto do_dump_avail;
page_bad = FALSE;
+ if (memtest == 0)
+ goto skip_memtest;
/*
* map page into kernel: valid, read/write,non-cacheable
@@ -1470,6 +1480,7 @@
*/
*(int *)ptr = tmp;
+skip_memtest:
/*
* Adjust array of valid/good pages.
*/
--- sys/boot/zfs/zfs.c.orig 2011-10-20 18:15:29.966685430 +0000
+++ sys/boot/zfs/zfs.c 2011-10-20 18:18:22.291033636 +0000
@@ -45,6 +45,12 @@
#include "zfsimpl.c"
+/*
+ * For GPT this should be 128 but leads to 50+ second delay in BTX loader so
+ * we use the original 4 pre r198420 by default for the boot process
+ */
+#define ZFS_MAX_SLICES 4
+
static int zfs_open(const char *path, struct open_file *f);
static int zfs_write(struct open_file *f, void *buf, size_t size, size_t
*resid);
static int zfs_close(struct open_file *f);
@@ -415,7 +421,7 @@
if (vdev_probe(vdev_read, (void*) (uintptr_t) fd, 0))
close(fd);
- for (slice = 1; slice <= 128; slice++) {
+ for (slice = 1; slice <= ZFS_MAX_SLICES; slice++) {
sprintf(devname, "disk%dp%d:", unit, slice);
fd = open(devname, O_RDONLY);
if (fd == -1) {
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