2012-10-15T00:44:23 *** arvind_khadri has joined #rtems 2012-10-15T01:15:32 *** sebhub has joined #rtems 2012-10-15T01:17:39 good morning 2012-10-15T03:39:43 *** arvind_khadri has quit IRC (Remote host closed the connection) 2012-10-15T03:40:32 *** arvind_khadri has joined #rtems 2012-10-15T07:38:02 *** QingPei has joined #rtems 2012-10-15T07:51:47 *** hagigat has joined #rtems 2012-10-15T07:51:58 hello 2012-10-15T07:52:36 does RTEMS have smp or symetric multi processing support? 2012-10-15T07:53:45 #rtems 2012-10-15T07:56:19 this is work in progress 2012-10-15T08:15:28 how about asymmetric multi processing? 2012-10-15T08:20:48 does rtems have the complete tcp/ip stack as large as Linux? 2012-10-15T08:21:38 What user level network protocols it supports? does it have SNMP? 2012-10-15T08:23:14 all RTEMS code is executed in kernel-mode?(CPU ring zero) 2012-10-15T08:23:22 rtems uses the usb stack from FreeBSD 4.2 2012-10-15T08:23:37 we work on a port from FreeBSD 8.0 or 9.0 with IPv6 2012-10-15T08:23:42 lwIP is also an option 2012-10-15T08:23:53 rtems executes in supervisor mode 2012-10-15T08:24:15 SNMP is application specific 2012-10-15T08:24:28 Thank you sebhub 2012-10-15T08:24:35 asymmetric multi processing is supported 2012-10-15T08:24:38 via message passing 2012-10-15T08:25:01 sorry, not usb stack, network stack 2012-10-15T08:25:11 the usb stack is from FreeBSD 8.0 2012-10-15T08:25:52 does RTEMS network stack as large as Linux stack? 2012-10-15T08:26:11 for example we have ipsec in Linuux 2012-10-15T08:26:16 the FreeBSD stack is the reference implementation of TCP/IP 2012-10-15T08:26:24 does rtmes let us do ipsec?!!! 2012-10-15T08:26:45 probably with the new stack 2012-10-15T08:27:10 i think rtems have very limited number of IETF standards 2012-10-15T08:27:14 but, this is also work in progress which you can sponsor ;-) 2012-10-15T08:27:39 the current stack is quite old and only supports IPv4 2012-10-15T08:28:27 i have seen the source code of RTEMS 4.10.2, it is very small. How its network stack can be compared with Linux 2012-10-15T08:29:52 does RTEMS have RSVP protocol? 2012-10-15T08:30:34 or SOCKS? SSH, LDAP, TLS, SSL? 2012-10-15T08:30:55 OSPF, BGP, IGMP? 2012-10-15T08:31:38 So the question is that what protocols does it have? is there a complete list? 2012-10-15T08:31:50 most items of your list are not part of Linux 2012-10-15T08:33:17 the FreeBSD 8.0 or 9.0 based network will be fairly complete 2012-10-15T08:35:20 can RTEMS be executed on a intel based mother board, core i7 with ICH11? 2012-10-15T08:36:02 i don't know, never worked with intel and rtems, we use powerpc, arm, and coldfire 2012-10-15T08:36:39 in which rtems feature are you interested in? 2012-10-15T08:37:34 the part of hardware related, also interrupts and the scheduler 2012-10-15T08:38:56 i am looking for minimum scheduling latency 2012-10-15T08:39:32 defining real time threads which can meet timing deadlines 2012-10-15T08:40:30 there are also real time extensions for linux 2012-10-15T08:40:54 I believe that RTEMS is executed on embedded platforms like arm based small fanless boards 2012-10-15T08:41:27 what do you suggest for having a hard real time system 2012-10-15T08:42:02 we run it also on multi-core powerpc systems 2012-10-15T08:42:16 it depends on your application requirements 2012-10-15T08:43:22 do those mother boards have VGA, keyboard, DVD drive, hard disk like a general purpose computer? 2012-10-15T08:43:34 no 2012-10-15T08:44:44 besides you trust the real time threads you are executing. Because each thread has access to the whole RAM 2012-10-15T08:45:25 yes, one process multiple threads 2012-10-15T08:45:45 everything has a trade-off 2012-10-15T08:47:06 does RTEMS has a periodic timer interrupt? it has a tick based scheduler i think 2012-10-15T08:47:35 yes 2012-10-15T08:49:09 does RTEMS project originated in USA? 2012-10-15T08:49:17 yes 2012-10-15T08:50:34 you told about asymmetric multi processing. Where is its code in the RTEMS source tree? 2012-10-15T08:50:53 i have RTEMS 4.10.2 2012-10-15T08:51:04 i mean what folder? 2012-10-15T08:51:20 look for RTEMS_MULTIPROCESSING, its also in the C users guide 2012-10-15T08:51:51 or directories shmsupp 2012-10-15T08:57:17 shmsupp is seen in README files mostly, no directory named shmsupp !! 2012-10-15T08:59:12 ./c/src/lib/libbsp/no_cpu/no_bsp/shmsupp 2012-10-15T08:59:14 ./c/src/lib/libbsp/sparc/leon3/shmsupp 2012-10-15T08:59:15 ./c/src/lib/libbsp/powerpc/qoriq/shmsupp 2012-10-15T08:59:17 ./c/src/lib/libbsp/powerpc/psim/shmsupp 2012-10-15T08:59:18 ./c/src/lib/libbsp/m68k/mvme136/shmsupp 2012-10-15T08:59:20 ./c/src/lib/libbsp/m68k/mvme147s/shmsupp 2012-10-15T09:04:53 Now i understood the meaning of asymmetric. it is for one or several CPU 2012-10-15T09:05:35 but RTEMS doe snot support distributed processing 2012-10-15T09:08:05 Suppose an ethernet frame arrives and an interrupt happens in the middle of a real time thread. does that interrupt is taken by RTEMS? 2012-10-15T09:15:15 in case interrupts are not disabled, then yes 2012-10-15T09:16:01 so a real time thread can be delayed by nested interrupts 2012-10-15T09:18:33 yes, but you can disable/enable interrupts yourself 2012-10-15T09:25:37 thank you 2012-10-15T09:29:30 *** hagigat has quit IRC (Quit: Leaving) 2012-10-15T09:55:19 *** arvind_khadri has quit IRC (Ping timeout: 252 seconds) 2012-10-15T10:07:09 *** lcpfnvcy has joined #rtems 2012-10-15T10:08:26 *** lcpfnvcy_ has quit IRC (Ping timeout: 265 seconds) 2012-10-15T11:19:51 *** QingPei has quit IRC (Quit: Leaving.) 2012-10-15T11:27:15 *** sebhub has quit IRC (Remote host closed the connection) 2012-10-15T11:45:21 *** arvind_khadri has joined #rtems 2012-10-15T21:11:30 *** kiwichris has quit IRC (Ping timeout: 276 seconds) 2012-10-15T22:11:47 *** kiwichris has joined #rtems 2012-10-15T22:32:04 *** kiwichris has quit IRC (Quit: Leaving) 2012-10-16T00:24:24 *** arvind_khadri has quit IRC (Ping timeout: 265 seconds) 2012-10-16T01:17:52 *** sebhub has joined #rtems 2012-10-16T01:20:21 good morning 2012-10-16T01:45:43 *** arvind_khadri has joined #rtems 2012-10-16T01:53:31 *** arvind_khadri has quit IRC (Remote host closed the connection) 2012-10-16T01:54:04 *** arvind_khadri has joined #rtems 2012-10-16T01:55:46 *** arvind_khadri has quit IRC (Remote host closed the connection) 2012-10-16T01:56:07 *** arvind_khadri has joined #rtems 2012-10-16T08:06:23 *** arvind_khadri has quit IRC (Remote host closed the connection) 2012-10-16T08:07:16 *** arvind_khadri has joined #rtems 2012-10-16T08:30:34 *** QingPei has joined #rtems 2012-10-16T08:44:13 *** gedare has joined #rtems 2012-10-16T10:20:17 *** arvind_khadri has quit IRC (Remote host closed the connection) 2012-10-16T10:21:06 *** arvind_khadri has joined #rtems 2012-10-16T10:25:22 *** arvind_khadri has quit IRC (Read error: Operation timed out) 2012-10-16T10:29:24 *** sebhub has quit IRC (Remote host closed the connection) 2012-10-16T11:23:22 *** 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*** kiwichris has joined #rtems 2012-10-16T22:47:00 *** kiwichris has quit IRC (Client Quit) 2012-10-17T02:26:33 *** arvind_khadri has joined #rtems 2012-10-17T06:09:07 *** arvind_khadri has quit IRC (Ping timeout: 240 seconds) 2012-10-17T07:56:51 anyone seen DrJoel recently? 2012-10-17T08:42:42 *** kiwichris has joined #rtems 2012-10-17T10:22:17 *** kiwichris has quit IRC (Quit: This computer has gone to sleep) 2012-10-17T12:44:12 jkridner: email him 2012-10-17T12:44:25 I did. :) 2012-10-17T13:45:22 ah, then he's probably busy the mentor summit is getting up which is he leaving for tomorrow 2012-10-17T17:05:50 *** kiwichris has joined #rtems 2012-10-17T17:48:31 *** kiwichris has quit IRC (Quit: This computer has gone to sleep) 2012-10-17T18:18:26 *** kiwichris has joined #rtems 2012-10-17T18:30:21 *** kiwichris has quit IRC (Quit: This computer has gone to sleep) 2012-10-17T18:50:44 *** kiwichris has joined #rtems 2012-10-17T18:54:31 *** kiwichris has quit IRC (Client Quit) 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