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* block_notifier_and_writer() will now flush 1000 blocks when reaching the soft

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memory limit.
* Improved debug output.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35735 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2010-03-03 14:39:26 +00:00
parent 8acc2e0854
commit 6a7f219c8d
1 changed files with 7 additions and 2 deletions
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src/system/kernel/cache/block_cache.cpp
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+7 -2
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@@ -2022,6 +2022,9 @@ dump_block_long(cached_block* block)
kprintf(" current data: %p\n", block->current_data);
kprintf(" original data: %p\n", block->original_data);
kprintf(" parent data: %p\n", block->parent_data);
#if BLOCK_CACHE_DEBUG_CHANGED
kprintf(" compare data: %p\n", block->compare);
#endif
kprintf(" ref_count: %ld\n", block->ref_count);
kprintf(" accessed: %ld\n", block->LastAccess());
kprintf(" flags: ");
@@ -2123,6 +2126,7 @@ dump_cache(int argc, char** argv)
kprintf(" max_blocks: %Ld\n", cache->max_blocks);
kprintf(" block_size: %lu\n", cache->block_size);
kprintf(" next_transaction_id: %ld\n", cache->next_transaction_id);
kprintf(" buffer_cache: %p\n", cache->buffer_cache);
kprintf(" busy_reading: %lu, %s waiters\n", cache->busy_reading_count,
cache->busy_reading_waiters ? "has" : "no");
kprintf(" busy_writing: %lu, %s waiters\n", cache->busy_writing_count,
@@ -2447,7 +2451,8 @@ block_notifier_and_writer(void* /*data*/)
// write 64 blocks of each block_cache every two seconds
// TODO: change this once we have an I/O scheduler
timeout = kTimeout;
size_t usedMemory = 0;
size_t usedMemory;
object_cache_get_usage(sBlockCache, &usedMemory);
block_cache* cache = NULL;
while ((cache = get_next_locked_block_cache(cache)) != NULL) {
@@ -2503,7 +2508,7 @@ block_notifier_and_writer(void* /*data*/)
> vm_page_num_pages() / 2) {
// Try to reduce memory usage to half of the available
// RAM at maximum
cache->RemoveUnusedBlocks(500, 10);
cache->RemoveUnusedBlocks(1000, 10);
}
}