2 This file is part of GNUnet.
3 (C) 2009 Christian Grothoff (and other contributing authors)
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6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
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11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
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17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 * @file include/gnunet_constants.h
23 * @brief "global" constants for performance tuning
24 * @author Christian Grothoff
27 #ifndef GNUNET_CONSTANTS_H
28 #define GNUNET_CONSTANTS_H
33 #if 0 /* keep Emacsens' auto-indent happy */
39 * Last resort choice for configuration file name.
41 #define GNUNET_DEFAULT_USER_CONFIG_FILE "~/.config/gnunet.conf"
44 * Bandwidth (in/out) to assume initially (before either peer has
45 * communicated any particular preference). Should be rather low; set
46 * so that at least one maximum-size message can be send roughly once
49 #define GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT GNUNET_BANDWIDTH_value_init (1024)
52 * After how long do we consider a connection to a peer dead
53 * if we don't receive messages from the peer?
55 #define GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 5)
58 * How long do we delay reading more from a peer after a quota violation?
60 #define GNUNET_CONSTANTS_QUOTA_VIOLATION_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 2)
63 * After how long do we consider a service unresponsive
64 * even if we assume that the service commonly does not
65 * respond instantly (DNS, Database, etc.).
67 #define GNUNET_CONSTANTS_SERVICE_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 10)
70 * How long do we delay messages to get larger packet sizes (CORKing)?
72 #define GNUNET_CONSTANTS_MAX_CORK_DELAY GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1)
75 * Until which load do we consider the peer overly idle
76 * (which means that we would like to use more resources).<p>
78 * Note that we use 70 to leave some room for applications
79 * to consume resources "idly" (i.e. up to 85%) and then
80 * still have some room for "paid for" resource consumption.
82 #define GNUNET_CONSTANTS_IDLE_LOAD_THRESHOLD 70
85 * For how long do we allow unused bandwidth
86 * from the past to carry over into the future? (in seconds)
88 #define GNUNET_CONSTANTS_MAX_BANDWIDTH_CARRY_S 5
92 * After how long do we expire an address in a HELLO that we just
93 * validated? This value is also used for our own addresses when we
96 #define GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 12)
100 * How long do we cache records at most in the DHT?
102 #define GNUNET_CONSTANTS_DHT_MAX_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 24)
106 * Size of the `struct EncryptedMessage` of the core (which
107 * is the per-message overhead of the core).
109 #define GNUNET_CONSTANTS_CORE_SIZE_ENCRYPTED_MESSAGE (24 + sizeof (struct GNUNET_HashCode))
112 * What is the maximum size for encrypted messages? Note that this
113 * number imposes a clear limit on the maximum size of any message.
114 * Set to a value close to 64k but not so close that transports will
115 * have trouble with their headers.
117 * Could theoretically be 64k minus (#GNUNET_CONSTANTS_CORE_SIZE_ENCRYPTED_MESSAGE +
118 * #GNUNET_CONSTANTS_TRANSPORT_SIZE_OUTBOUND_MESSAGE), but we're going
119 * to be more conservative for now.
121 #define GNUNET_CONSTANTS_MAX_ENCRYPTED_MESSAGE_SIZE (63 * 1024)
124 * Largest block that can be stored in the DHT.
126 #define GNUNET_CONSTANTS_MAX_BLOCK_SIZE (62 * 1024)
130 * K-value that must be used for the bloom filters in 'GET'
133 #define GNUNET_CONSTANTS_BLOOMFILTER_K 16
138 #if 0 /* keep Emacsens' auto-indent happy */