65 lines
2.5 KiB
C
65 lines
2.5 KiB
C
/*
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* Copyright (c) 2020 Apple Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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#ifndef _MISCFS_SPECFS_IO_COMPRESSION_STATS_H_
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#define _MISCFS_SPECFS_IO_COMPRESSION_STATS_H_
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#include <sys/buf_internal.h>
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#include <sys/vnode.h>
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void io_compression_stats_init(void);
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void io_compression_stats(buf_t bp);
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#define IO_COMPRESSION_STATS_DEFAULT_BLOCK_SIZE (4 * 1024)
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#define IO_COMPRESSION_STATS_MIN_BLOCK_SIZE (4 * 1024)
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#define IO_COMPRESSION_STATS_MAX_BLOCK_SIZE (1024 * 1024 * 1024)
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#if IO_COMPRESSION_STATS_DEBUG
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#define io_compression_stats_dbg(fmt, ...) \
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printf("%s: " fmt "\n", __func__, ## __VA_ARGS__)
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#else
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#define io_compression_stats_dbg(fmt, ...)
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#endif
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/* iocs_store_buffer: Buffer that captures the stats of vnode being reclaimed */
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struct iocs_store_buffer {
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void* buffer;
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uint32_t current_position;
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uint32_t marked_point;
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};
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#define IOCS_STORE_BUFFER_NUM_SLOTS 10000
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#define IOCS_STORE_BUFFER_SIZE (IOCS_STORE_BUFFER_NUM_SLOTS * (sizeof(struct iocs_store_buffer_entry)))
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/* Notify user when the buffer is 80% full */
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#define IOCS_STORE_BUFFER_NOTIFY_AT ((IOCS_STORE_BUFFER_SIZE * 8) / 10)
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/* Wait for the buffer to be 10% more full before notifying again */
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#define IOCS_STORE_BUFFER_NOTIFICATION_INTERVAL (IOCS_STORE_BUFFER_SIZE / 10)
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#endif
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