The following tunables are used in the HP SPECweb99_SSL submittals, beginning in July, 2002. =============================================================================== Zeus global parameter tunables: Below are the descriptions and default values for the parameters used in HP's global.cfg file. Tunable/Description Default Value ------------------- ------------- tuning!bind_any yes Boolean: have server sockets bind to IPADDR_ANY tuning!cache_cooling_time 120 Zeus imposed delay before caching recently modified files starts (seconds) tuning!cache_files 8011 Size of the web server file cache (number of files) tuning!cache_flush_interval 120 Time after which unaccessed files are flushed from the cache (seconds) tuning!cache_large_file 1048577 Minimum size of a "large" file (bytes) tuning!cache_max_bytes 33554432 Maximum size to reserve for cached files (bytes) (0=nolimit) tuning!cache_small_file 4096 Maximum size of a "small"file (bytes) (system page size) tuning!cache_stat_expire 17 Time for which the response of a stat() call is cached (seconds) tuning!cbuff_size 8192 Integer: Cbuff size tuning!keepalive_timeout 15 Time after which an inactive keepalive connections will be closed (seconds) tuning!keepalive_max 256 Maximum permitted number of keepalive connections (-1 means no limit) tuning!listen_queue_size 256 Size of the TCP listen queue tuning!maxaccept 32 Maximum number of accept() calls per server socket per poll()/select() tuning!ssl_keepalive yes Keepalive SSL connections (Used to default to "no") tuning!ssl_sessioncache_size 199 Size of SSL session cache tuning!ssl_diskcache yes if tuning!num_children=1 Boolean: use 2nd level on-disk cache for no if tuning!num_children>1 storing SSL session information tuning!softservers yes Decide which soft server a request should go to tuning!so_rbuff_size Size of the server socket buffer (so_rbuff_size) (bytes) tuning!so_wbuff_size Size of the socket write buffer (bytes) tuning!timeout 120 Timeout for client transfers (seconds) tuning!unique_bind no Force each child process to bind to a unique IP address, and not to each interface tuning!use_poll yes Boolean: use poll() instead of select() tuning!modules!cgi!cbuff_size 8192 Integer: cbuff size tuning!modules!security!enabled no Boolean: Enable SSL tuning!modules!stats!enabled yes Boolean: Enable the satistics module tuning!modules!isapi!enabled no Boolean: Enable the ISPAI module =============================================================================== The networking tunables used are the following. The file modified is /etc/rc.config.d/nddconf. tcp_xmit_hiwater_def: Amount of unsent data that triggers write-side flow control. minimum: 4096 maximum: undefined default: 32768 (32K) tcp_conn_request_max: Maximum number of outstanding inbound connection requests. minimum: 1 maximum: undefined default: 20 tcp_conn_strategy: Should TCP connection establishment and teardown optimize for space (value 0) or time (value 1). default: 0 ===============================================================================