diff options
Diffstat (limited to 'erts/doc/src/erl.xml')
| -rw-r--r-- | erts/doc/src/erl.xml | 62 |
1 files changed, 55 insertions, 7 deletions
diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml index 85c6140b01..99f2466d79 100644 --- a/erts/doc/src/erl.xml +++ b/erts/doc/src/erl.xml @@ -4,7 +4,7 @@ <comref> <header> <copyright> - <year>1996</year><year>2011</year> + <year>1996</year><year>2012</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -442,11 +442,7 @@ system with SMP support is available. <c>-smp auto</c> starts the Erlang runtime system with SMP support enabled if it is available and more than one logical processor are detected. - <c>-smp disable</c> starts a runtime system without SMP support. - By default <c>-smp auto</c> will be used unless a conflicting - parameter has been passed, then <c>-smp disable</c> will be - used. Currently only the <c>-hybrid</c> parameter conflicts - with <c>-smp auto</c>.</p> + <c>-smp disable</c> starts a runtime system without SMP support.</p> <p><em>NOTE</em>: The runtime system with SMP support will not be available on all supported platforms. See also the <seealso marker="#+S">+S</seealso> flag.</p> @@ -537,7 +533,7 @@ <p>Force the <c>compressed</c> option on all ETS tables. Only intended for test and evaluation.</p> </item> - <tag><c><![CDATA[+fnl]]></c></tag> + <tag><marker id="file_name_encoding"></marker><c><![CDATA[+fnl]]></c></tag> <item> <p>The VM works with file names as if they are encoded using the ISO-latin-1 encoding, disallowing Unicode characters with codepoints beyond 255. This is default on operating systems that have transparent file naming, i.e. all Unixes except MacOSX.</p> </item> @@ -819,6 +815,16 @@ <seealso marker="erlang#system_info_scheduler_bindings">erlang:system_info(scheduler_bindings)</seealso>. </p> </item> + <tag><marker id="+sbwt"><c>+sbwt none|very_short|short|medium|long|very_long</c></marker></tag> + <item> + <p>Set scheduler busy wait threshold. Default is <c>medium</c>. + The threshold determines how long schedulers should busy + wait when running out of work before going to sleep. + </p> + <p><em>NOTE:</em> This flag may be removed or changed at any time + without prior notice. + </p> + </item> <tag><marker id="+scl"><c>+scl true|false</c></marker></tag> <item> <p>Enable or disable scheduler compaction of load. By default @@ -954,6 +960,17 @@ <p>For more information, see <seealso marker="erlang#system_info_cpu_topology">erlang:system_info(cpu_topology)</seealso>.</p> </item> + <tag><marker id="+sws"><c>+sws default|legacy|proposal</c></marker></tag> + <item> + <p>Set scheduler wakeup strategy. Default is <c>legacy</c> (has been + used since OTP-R13B). The <c>proposal</c> strategy is the currently + proposed strategy for OTP-R16. Note that the <c>proposal</c> strategy + might change during OTP-R15. + </p> + <p><em>NOTE:</em> This flag may be removed or changed at any time + without prior notice. + </p> + </item> <tag><marker id="+swt"><c>+swt very_low|low|medium|high|very_high</c></marker></tag> <item> <p>Set scheduler wakeup threshold. Default is <c>medium</c>. @@ -1092,6 +1109,37 @@ the emulator will be allowed to spend writing a crash dump. When the given number of seconds have elapsed, the emulator will be terminated by a SIGALRM signal.</p> + + <p> If the environment variable is <em>not</em> set or it is set to zero seconds, <c><![CDATA[ERL_CRASH_DUMP_SECONDS=0]]></c>, + the runtime system will not even attempt to write the crash dump file. It will just terminate. + </p> + <p> If the environment variable is set to negative valie, e.g. <c><![CDATA[ERL_CRASH_DUMP_SECONDS=-1]]></c>, + the runtime system will wait indefinitely for the crash dump file to be written. + </p> + <p> This environment variable is used in conjuction with + <seealso marker="kernel:heart"><c>heart</c></seealso> if <c>heart</c> is running: + </p> + <taglist> + <tag><c><![CDATA[ERL_CRASH_DUMP_SECONDS=0]]></c></tag> + <item><p> + Suppresses the writing a crash dump file entirely, + thus rebooting the runtime system immediately. + This is the same as not setting the environment variable. + </p> + </item> + <tag><c><![CDATA[ERL_CRASH_DUMP_SECONDS=-1]]></c></tag> + <item><p>Setting the environment variable to a negative value will cause the + termination of the runtime system to wait until the crash dump file + has been completly written. + </p> + </item> + <tag><c><![CDATA[ERL_CRASH_DUMP_SECONDS=S]]></c></tag> + <item><p> + Will wait for <c>S</c> seconds to complete the crash dump file and + then terminate the runtime system. + </p> + </item> + </taglist> </item> <tag><marker id="ERL_AFLAGS"><c><![CDATA[ERL_AFLAGS]]></c></marker></tag> <item> |