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- Reduce how much ZFS caches by default. This is another change to mitigate

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'kmem_map too small panics'.
- Print two warnings if there is not enough memory and not enough address
  space.
- Improve comment.
This commit is contained in:
Pawel Jakub Dawidek 2008-01-24 11:24:16 +00:00
parent 44ce1efd91
commit 79bc018dd7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=175633
2 changed files with 10 additions and 8 deletions
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9
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c
View File

@ -1439,7 +1439,7 @@ arc_reclaim_needed(void)
return (1);
#endif
#else
if (kmem_used() > (kmem_size() * 4) / 5)
if (kmem_used() > (kmem_size() * 3) / 4)
return (1);
#endif
@ -2729,7 +2729,7 @@ arc_init(void)
arc_c_max = (arc_c * 8) - (1<<30);
else
arc_c_max = arc_c_min;
arc_c_max = MAX(arc_c * 6, arc_c_max);
arc_c_max = MAX(arc_c * 5, arc_c_max);
#ifdef _KERNEL
/*
* Allow the tunables to override our calculations if they are
@ -2800,11 +2800,12 @@ arc_init(void)
arc_dead = FALSE;
#ifdef _KERNEL
/* Warn about ZFS memory requirements. */
/* Warn about ZFS memory and address space requirements. */
if (((uint64_t)physmem * PAGESIZE) < (256 + 128 + 64) * (1 << 20)) {
printf("ZFS WARNING: Recommended minimum RAM size is 512MB; "
"expect unstable behavior.\n");
} else if (kmem_size() < 512 * (1 << 20)) {
}
if (kmem_size() < 512 * (1 << 20)) {
printf("ZFS WARNING: Recommended minimum kmem_size is 512MB; "
"expect unstable behavior.\n");
printf(" Consider tuning vm.kmem_size and "

9
sys/contrib/opensolaris/uts/common/fs/zfs/arc.c
View File

@ -1439,7 +1439,7 @@ arc_reclaim_needed(void)
return (1);
#endif
#else
if (kmem_used() > (kmem_size() * 4) / 5)
if (kmem_used() > (kmem_size() * 3) / 4)
return (1);
#endif
@ -2729,7 +2729,7 @@ arc_init(void)
arc_c_max = (arc_c * 8) - (1<<30);
else
arc_c_max = arc_c_min;
arc_c_max = MAX(arc_c * 6, arc_c_max);
arc_c_max = MAX(arc_c * 5, arc_c_max);
#ifdef _KERNEL
/*
* Allow the tunables to override our calculations if they are
@ -2800,11 +2800,12 @@ arc_init(void)
arc_dead = FALSE;
#ifdef _KERNEL
/* Warn about ZFS memory requirements. */
/* Warn about ZFS memory and address space requirements. */
if (((uint64_t)physmem * PAGESIZE) < (256 + 128 + 64) * (1 << 20)) {
printf("ZFS WARNING: Recommended minimum RAM size is 512MB; "
"expect unstable behavior.\n");
} else if (kmem_size() < 512 * (1 << 20)) {
}
if (kmem_size() < 512 * (1 << 20)) {
printf("ZFS WARNING: Recommended minimum kmem_size is 512MB; "
"expect unstable behavior.\n");
printf(" Consider tuning vm.kmem_size and "