Experimental Physics and
Industrial Control System

We still have very slow qemu tests of the RTEMS-pc686-qemu target, there’s a 45-second startup delay while initializing the network (libbsd). I just ran some timings:

This is from a timed run of epicsTypesTest.t from the current 7.0 branch, run on RHEL-7:

tux% time perl epicsTypesTest.t

(process:16546): GLib-WARNING **: 20:28:55.351: gmem.c:489: custom memory allocation vtable not supported

i386: isr=0 irr=1

i386: isr=0 irr=1

 initConsole --- Info ---

stdin: fileno: 0, ttyname: /dev/console

stdout: fileno: 1, ttyname: /dev/console

stderr: fileno: 2, ttyname: /dev/console

time set to : 04/14/14 07:30:06.000168836 UTC

Startup.

epicsThreadSetPriority called by non epics thread

***** RTEMS Version: rtems-5.0.0 (Intel i386/Pentium/pc686) *****

***** Initializing network (libbsd, dhcpcd) *****

***** ifconfig lo0 *****

***** add dhcpcd hook *****

***** Start default network dhcpcd *****

--Info (hpj)-- bsd task prio IRQS: 96  -----

--Info (hpj)-- bsd task prio TIME: 98  -----

 ---- Waiting for DHCP ...

***** Primary Network interface : em0 *****

all out ---> interface = em0

all out ---> reason = PREINIT

all out ---> pid = 1

all out ---> ifmetric = 201

all out ---> ifwireless = 0

all out ---> ifflags = 4294936643

all out ---> ifmtu = 1500

all out ---> interface_order = em0

all out ---> if_up = false

all out ---> if_down = true

***** Primary Network interface : em0 *****

all out ---> interface = em0

all out ---> reason = NOCARRIER

all out ---> pid = 1

all out ---> ifmetric = 201

all out ---> ifwireless = 0

all out ---> ifflags = 4294936643

all out ---> ifmtu = 1500

all out ---> interface_order = em0

all out ---> if_up = false

all out ---> if_down = true

***** Primary Network interface : em0 *****

all out ---> interface = em0

all out ---> reason = CARRIER

all out ---> pid = 1

all out ---> ifmetric = 201

all out ---> ifwireless = 0

all out ---> ifflags = 4294936643

all out ---> ifmtu = 1500

all out ---> interface_order = em0

all out ---> if_up = false

all out ---> if_down = true

***** Primary Network interface : em0 *****

all out ---> interface = em0

all out ---> reason = NOCARRIER

all out ---> pid = 1

all out ---> ifmetric = 201

all out ---> ifwireless = 0

all out ---> ifflags = 34818

all out ---> ifmtu = 1500

all out ---> interface_order = em0

all out ---> if_up = false

all out ---> if_down = true

***** Primary Network interface : em0 *****

all out ---> interface = em0

all out ---> reason = CARRIER

all out ---> pid = 1

all out ---> ifmetric = 201

all out ---> ifwireless = 0

all out ---> ifflags = 4294936643

all out ---> ifmtu = 1500

all out ---> interface_order = em0

all out ---> if_up = false

all out ---> if_down = true

***** Primary Network interface : em0 *****

all out ---> interface = em0

all out ---> reason = BOUND

Interface em0 bounded

all out ---> pid = 1

all out ---> ifmetric = 201

all out ---> ifwireless = 0

all out ---> ifflags = 4294936643

all out ---> ifmtu = 1500

all out ---> interface_order = em0

all out ---> if_up = true

all out ---> if_down = false

all out ---> new_ip_address = 10.0.2.15

all out ---> new_subnet_cidr = 24

all out ---> new_broadcast_address = 10.0.2.255

all out ---> new_network_number = 10.0.2.0

all out ---> new_subnet_mask = 255.255.255.0

all out ---> new_dhcp_lease_time = 86400

all out ---> new_dhcp_message_type = 5

all out ---> new_dhcp_server_identifier = 10.0.2.2

-------------- IFCONFIG -----------------

em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500

        options=81209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,VLAN_HWFILTER>

        ether 52:54:00:12:34:56

        inet6 fe80::5054:ff:fe12:3456%em0 prefixlen 64 scopeid 0x1

        inet 10.0.2.15 netmask 0xffffff00 broadcast 10.0.2.255

        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>

        media: Ethernet autoselect (1000baseT <full-duplex>)

        status: active

lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384

        options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>

        inet 127.0.0.1 netmask 0xffffff00

        inet6 ::1 prefixlen 128

        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2

        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>

        groups: lo

-------------- NETSTAT ------------------

Routing tables

Internet:

Destination        Gateway            Flags     Netif Expire

10.0.2.0/24        link#1             U           em0

10.0.2.15          link#1             UHS         lo0

127.0.0.1          link#2             UH          lo0

Internet6:

Destination                       Gateway                       Flags     Netif Expire

::1                               link#2                        UH          lo0

fe80::%em0/64                     link#1                        U           em0

fe80::5054:ff:fe12:3456%em0       link#1                        UHS         lo0

fe80::%lo0/64                     link#2                        U           lo0

fe80::1%lo0                       link#2                        UHS         lo0

***** Until now no NTP support in RTEMS 5 with rtems-libbsd *****

***** Ask ntp server once... *****

epicsNtpGetTime: Network is unreachable

***** Can't get time from ntp ...

***** Setting up file system *****

***** Using compiled in file data *****

-> /iocshTestBadArgIndirect.cmd - ok

-> /iocshTestBadArg.cmd - ok

-> /iocshTestSuccessIndirect.cmd - ok

-> /iocshTestSuccess.cmd - ok

***** Initializing NFS *****

 check for time registered , C++ initialization ...

***** Preparing EPICS application *****

chdir("/")

***** Starting EPICS application *****

1..10

ok  1 - sizeof(epicsInt8) == 1

ok  2 - sizeof(epicsUInt8) == 1

ok  3 - sizeof(epicsInt16) == 2

ok  4 - sizeof(epicsUInt16) == 2

ok  5 - sizeof(epicsInt32) == 4

ok  6 - sizeof(epicsUInt32) == 4

ok  7 - sizeof(epicsInt64) == 8

ok  8 - sizeof(epicsUInt64) == 8

ok  9 - sizeof(epicsFloat32) == 4

ok 10 - sizeof(epicsFloat64) == 8

    Results

    =======

       Tests: 10 

      Passed:  10 = 100.00%

***** IOC application terminating *****

*** FATAL ***

fatal source: 5 (RTEMS_FATAL_SOURCE_EXIT)

fatal code: 0 (0x00000000)

RTEMS version: 5.0.0.ebc3abe40309f47f3d024c6f2636d9682863a9e6-modified

RTEMS tools: 7.5.0 20191114 (RTEMS 5, RSB 5 (ebc3abe40309), Newlib 7947581)

executing thread ID: 0x08b010001

executing thread name: 

3.375u 0.533s 0:56.18 6.9% 0+0k 0+0io 0pf+0w

If I delete the qemu-system-i386 argument -net nic,model=e1000 and run it again it initializes the network almost instantaneously with the other NIC, but then it hangs waiting for a DHCP response (I gave up on it after 5 minutes):

tux% time perl epicsTypesTest.t

(process:17732): GLib-WARNING **: 20:39:53.515: gmem.c:489: custom memory allocation vtable not supported

i386: isr=0 irr=1

i386: isr=0 irr=1

 initConsole --- Info ---

stdin: fileno: 0, ttyname: /dev/console

stdout: fileno: 1, ttyname: /dev/console

stderr: fileno: 2, ttyname: /dev/console

time set to : 04/14/14 07:30:06.000172872 UTC

Startup.

epicsThreadSetPriority called by non epics thread

***** RTEMS Version: rtems-5.0.0 (Intel i386/Pentium/pc686) *****

***** Initializing network (libbsd, dhcpcd) *****

***** ifconfig lo0 *****

***** add dhcpcd hook *****

***** Start default network dhcpcd *****

--Info (hpj)-- bsd task prio IRQS: 96  -----

--Info (hpj)-- bsd task prio TIME: 98  -----

 ---- Waiting for DHCP ...

qemu: terminating on signal 2

0.019u 0.008s 5:09.20 0.0% 0+0k 0+0io 0pf+0w

I haven’t tried this with the RTEMS image built for legacy networking instead of libbsd, that might be worth trying if someone has a copy available.

- Andrew