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Solaris Tunable Parameters Reference Manual Guide

Solaris Tunable Parameter Reference Manual provides reference information about Solaris kernel and network tunable parameters. This manual does not provide tunable parameter information about the CDE or Java environments.

It contains information for both SPARC based and IA based systems.This "Solaris Tunable Parameters Reference Manual Guide" is intended for experienced Solaris system administrators who might need to change kernel tunable parameters in certain situations.


Contents of this Solaris Tunable Parameters Reference Manual Guide

1 Overview of Solaris System Tuning 15
  • Tuning a Solaris System 15
  • Tuning Format 16
  • Tuning the Solaris Kernel 18
  • /etc/system File 18
  • adb 19
  • kadb 20
  • mdb 20
  • Special Structures 21
  • Viewing System Configuration Information 22
  • sysdef 22
  • kstats 22
2 Solaris Kernel Tunables 23
  • General Parameters 23
  • physmem 24
  • lwp_default_stksize 24
  • logevent_max_q_sz 25
  • fsflush and Related Tunables 26
  • fsflush 26
  • tune_t_fsflushr 27
  • autoup 27
  • dopageflush 28
  • doiflush 29
  • Process Sizing Tunables 29
  • maxusers 30
  • reserved_procs 31
  • pidmax 31
  • max_nprocs 32
  • maxuprc 33
  • Paging-Related Tunables 34
  • lotsfree 35
  • desfree 36
  • minfree 37
  • throttlefree 38
  • pageout_reserve 39
  • cachefree 40
  • priority_paging 40
  • pages_pp_maximum 41
  • tune_t_minarmem 41
  • fastscan 42
  • slowscan 43
  • min_percent_cpu 43
  • handspreadpages 44
  • pages_before_pager 44
  • maxpgio 45
  • Swapping-Related Variables 46
  • swapfs_reserve 46
  • swapfs_minfree 47
  • General Kernel Variables 47
  • noexec_user_stack 47
  • Kernel Memory Allocator 48
  • kmem_flags 49
  • General Driver 51
  • moddebug 51
  • General I/O 52
  • maxphys 52
  • rlim_fd_max 53
  • rlim_fd_cur 54
  • General File System 55
  • ncsize 55
  • rstchown 56
  • segkpsize 56
  • dnlc_dir_enable 57
  • dnlc_dir_min_size 58
  • dnlc_dir_max_size 58
  • UFS 59
  • bufhwm 59
  • ndquot 60
  • ufs_ninode 61
  • ufs:ufs_WRITES 63
  • ufs:ufs_LW and ufs:ufs_HW 63
  • TMPFS 64
  • tmpfs:tmpfs_maxkmem 64
  • tmpfs:tmpfs_minfree 65
  • Pseudo Terminals 66
  • pt_cnt 67
  • pt_pctofmem 67
  • pt_max_pty 68
  • Streams 69
  • nstrpush 69
  • strmsgsz 69
  • strctlsz 70
  • System V Message Queues 70
  • msgsys:msginfo_msgmax 71
  • msgsys:msginfo_msgmnb 71
  • msgsys:msginfo_msgmni 72
  • msgsys:msginfo_msgtql 72
  • System V Semaphores 73
  • semsys:seminfo_semmni 73
  • semsys:seminfo_semmns 74
  • semsys:seminfo_semvmx 74
  • semsys:seminfo_semmsl 75
  • semsys:seminfo_semopm 75
  • semsys:seminfo_semmnu 76
  • semsys:seminfo_semume 76
  • semsys:seminfo_semaem 77
  • System V Shared Memory 78
  • shmsys:shminfo_shmmax 78
  • shmsys:shminfo_shmmin 79
  • shmsys:shminfo_shmmni 79
  • shmsys:shminfo_shmseg 80
  • segspt_minfree 80
  • Scheduling 81
  • rechoose_interval 81
  • Timers 82
  • hires_tick 82
  • timer_max 82
  • Sun4u Specific 83
  • consistent_coloring 83
3 NFS Tunable Parameters 85
  • Tuning the NFS Environment 85
  • NFS Module Parameters 85
  • nfs:nfs3_pathconf_disable_cache 86
  • nfs:nfs_allow_preepoch_time 86
  • nfs:nfs_cots_timeo 87
  • nfs:nfs3_cots_timeo 88
  • nfs:nfs_do_symlink_cache 88
  • nfs:nfs3_do_symlink_cache 89
  • nfs:nfs_dynamic 89
  • nfs:nfs3_dynamic 90
  • nfs:nfs_lookup_neg_cache 91
  • nfs:nfs3_lookup_neg_cache 91
  • nfs:nfs_max_threads 92
  • nfs:nfs3_max_threads 93
  • nfs:nfs_nra 94
  • nfs:nfs3_nra 94
  • nfs:nrnode 95
  • nfs:nfs_shrinkreaddir 96
  • nfs:nfs_write_error_interval 97
  • nfs:nfs_write_error_to_cons_only 97
  • nfs:nfs_disable_rddir_cache 98
  • nfs:nfs3_bsize 98
  • nfs:nfs_async_clusters 99
  • nfs:nfs3_async_clusters 100
  • nfs:nfs_async_timeout 101
  • nfs:nacache 101
  • nfs:nfs3_jukebox_delay 102
  • nfs:nfs3_max_transfer_size 103
  • nfssrv Module Parameters 104
  • nfssrv:nfs_portmon 104
  • nfssrv:rfs_write_async 105
  • nfssrv:nfsauth_ch_cache_max 105
  • nfssrv:exi_cache_time 106
  • rpcmod Module Parameters 107
  • rpcmod:clnt_max_conns 107
  • rpcmod:clnt_idle_timeout 107
  • rpcmod:svc_idle_timeout 108
  • rpcmod:svc_default_stksize 108
  • rpcmod:svc_default_max_same_xprt 109
  • rpcmod:maxdupreqs 110
  • rpcmod:cotsmaxdupreqs 110
4 TCP/IP Tunable Parameters 113
  • Overview of Tuning TCP/IP Parameters 113
  • TCP/IP Parameter Validation 114
  • Internet Request for Comments (RFCs) 114
  • IP Tunable Parameters 114
  • ip_icmp_err_interval and ip_icmp_err_burst 114
  • ip_forwarding and ip6_forwarding 115
  • xxx:ip_forwarding 115
  • ip_respond_to_echo_broadcast and
  • ip6_respond_to_echo_multicast 116
  • ip_send_redirects and ip6_send_redirects 116
  • ip_forward_src_routed and ip6_forward_src_routed 116
  • ip_addrs_per_if 117
  • ip_strict_dst_multihoming and ip6_strict_dst_multihoming 117
  • TCP Tunable Parameters 119
  • tcp_deferred_ack_interval 119
  • tcp_deferred_acks_max 119
  • tcp_wscale_always 120
  • tcp_tstamp_always 120
  • tcp_xmit_hiwat 121
  • tcp_recv_hiwat 121
  • tcp_max_buf 121
  • tcp_cwnd_max 122
  • tcp_slow_start_initial 122
  • tcp_slow_start_after_idle 123
  • tcp_sack_permitted 123
  • tcp_rev_src_routes 124
  • tcp_time_wait_interval 124
  • tcp_conn_req_max_q 124
  • tcp_conn_req_max_q0 125
  • tcp_conn_req_min 126
  • TCP Parameters Set in the /etc/system File 126
  • TCP Parameters With Additional Cautions 128
  • UDP Tunable Parameters 131
  • udp_xmit_hiwat 131
  • udp_recv_hiwat 132
  • UDP Parameters with Additional Cautions 132
  • Per-Route Metrics 133
5 System Facility Parameters 135
  • System Default Parameters 135
  • cron 135
  • devfsadm 136
  • dhcpagent 136
  • fs 136
  • inetinit 136
  • init 136
  • kbd 136
  • login 137
  • nfslogd 137
  • passwd 137
  • power 137
  • su 137
  • sys-suspend 137
  • tar 137
  • utmpd 138
  • A Tunable Parameter Change History 139
  • Kernel Parameters 139
  • Process Sizing Tunables 139
  • Paging Related Tunables 141
  • General Kernel Variables 142
  • General I/O 143
  • Pseudo Terminals 145
  • Sun4u Specific 145
  • Parameters With No Functionality 146
  • Paging-Related Tunables 146
  • System V Message Parameters 146
  • System V Semaphore Parameters 148
  • NFS Module Parameters 148
  • B Revision History for this Manual 149
  • Current Version—Solaris 8 7/01 Release 149
  • New Parameters 149
  • logevent_max_q_sz 149
  • Changes to Existing Parameters From the Previous Release (Solaris 8 1/01) 150
  • maxusers 150
  • segspt_minfree 150
  • shmsys:shminfo_shmseg 150
  • tmpfs:tmpfs_maxkmem 151
  • tmpfs:tmpfs_minfree 151
  • tcp_conn_req_max_q0 151
  • tcp_rexmit_interval_max 152
  • tcp_slow_start_initial 152
  • Changes to Existing Parameters From the Previous Release (Solaris 8) 152
  • shmsys:shminfo_shmmin 152
  • semsys:seminfo_semmnu 153


Resource: http://dlc.sun.com/pdf/816-0607/816-0607.pdf
Posted By : Solaris Tutorial
On date : 04.06.10

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