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[00:00:45] <jepler> micges: I haven't done the bw calculations, but if you're stuck with 100 megabit at the switch you're testing with, you could try doubling the servo period
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[00:01:44] <micges> yeah working on 250Hz here
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[00:03:34] <micges> also got many wd bites
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[00:04:44] <micges> jepler: on what kernel are you now?
[00:05:42] <jepler> 3.14-0.bpo.2-rt-amd64 #1 SMP PREEMPT RT, core 2 duo, D-Link 5-Port Gigabit Switch (DGS-1005G)
[00:06:34] <jepler> 04:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection (pcie 1x)
[00:08:58] <jepler> huh I don't know what git show-branch is, but it sure is colorful
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[00:28:23] <PCW> Hmm multiple cards working today...
[00:29:53] <jepler> neat, an automated program was able to find a "new" branchless implementation of abs()
[00:30:16] <jepler> http://blog.regehr.org/ ->
http://blog.regehr.org/extra_files/souper-jul-15.html
[00:31:29] <jepler> if I understand it right, the superoptimizer is told to find a possibly more-efficient way to compute the value that the original code (%0 .. %3) stores in %3
[00:31:38] <jepler> and it comes up with the code in %4 .. %6
[00:31:59] <jepler> which would be written in C as
[00:32:00] <jepler> int abs_nocmp(int x) {
[00:32:00] <jepler> int q = x >> 31;
[00:32:00] <jepler> int r = x ^ q;
[00:32:00] <jepler> return r - q;
[00:32:02] <jepler> }
[00:32:52] <jepler> this method is known to people
http://www.geeksforgeeks.org/compute-the-integer-absolute-value-abs-without-branching/ but souper reasoned it out for itself
[00:33:00] <jepler> PCW: any idea what's different from yesterday to today?
[00:37:04] <PCW> No idea but occasionally I got some "resource not available" errors on startup
[00:37:06] <PCW> running cheerfully now with 2 sserial devices at 1 KHz, I did try 2 KHz yesterday but the 1 KHZ test failed also
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[00:38:18] <jepler> I see occasional startup problems too. I have not actually tried to figure out why. I know I shold..
[00:38:21] <jepler> should
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[00:41:28] <jepler> hm2_eth: ERROR: 192.168.1.129: Could not retrieve mac address
[00:41:28] <jepler> hm2_eth: rtapi_app_main: Resource temporarily unavailable (-11)
[00:42:19] <jepler> PCW: ^^ is this your startup message?
[00:42:59] <PCW> Not sure, let me try a bunch of starts
[00:44:11] <jepler> that was with a deliberately wrong address
[00:44:17] <jepler> I also got this once in about 20 starts
[00:44:17] <jepler> hm2_eth: ERROR: receiving packet: Resource temporarily unavailable
[00:44:18] <jepler> hm2_eth: Unrecognized ethernet board found: -- port names will be wrong
[00:44:18] <jepler> hm2_eth: discovered
[00:44:18] <jepler> hm2: llio reports invalid number of I/O connectors (0)
[00:45:04] <jepler> that one ends with
[00:45:04] <jepler> hm2_eth: rtapi_app_main: Invalid argument (-22)
[00:46:09] <jepler> actually that seems to be the more common failure
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[00:56:13] <jepler> here's a tcpdump of a failure that ends with (-22):
http://paste.debian.net/284671/
[00:56:49] <jepler> hm2_eth: ERROR: used llio->read in realtime task (addr=0x010c)
[00:57:11] <jepler> that time the terminal also logged this, which is weird (I never started a realtime thread)
[00:57:20] <PCW> Yes I just got that error
[00:58:35] <PCW> hm2_eth: loading Mesa AnyIO HostMot2 ethernet driver version 0.2
[00:58:37] <PCW> hm2_eth: 10.10.10.10: Hardware address: 00:60:1b:10:40:13
[00:58:38] <PCW> hm2_eth: 10.10.10.11: Hardware address: 00:60:1b:11:80:44
[00:58:40] <PCW> hm2_eth: ERROR: receiving packet: Resource temporarily unavailable
[00:58:42] <PCW> hm2_eth: Unrecognized ethernet board found: -- port names will be wrong
[00:58:44] <PCW> rtapi_app: caught signal 11 - dumping core
[00:58:46] <PCW> ./hm2-pidstepper_dual.hal:42: waitpid failed /home/pcw/linuxcnc-dev/bin/rtapi_app hm2_eth
[00:58:47] <PCW> ./hm2-pidstepper_dual.hal:42: /home/pcw/linuxcnc-dev/bin/rtapi_app exited without becoming ready
[01:01:07] <PCW> and the joint following errors are back
[01:01:09] <PCW> maybe some initialization fails but it continues
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[01:02:08] <jepler> 19:58:44 <PCW> rtapi_app: caught signal 11 - dumping core
[01:02:20] <jepler> the UI still started after the run where you got ^^^ that ?
[01:02:26] <jepler> after that message, all realtime is stopped!
[01:14:52] <PCW> failed to start that time but now when it does start, the joint following errors are back
[01:15:01] <jepler> sendto(6, "\210]\0\0", 4, 0, NULL, 0) = 4
[01:15:01] <jepler> recvfrom(6, 0x7fffc17d7c20, 16, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
[01:15:04] <jepler> write(1, "hm2_eth: ERROR: receiving packet"..., 67) = 67
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[01:15:39] <jepler> sometimes at startup it is failing to get back a packet in time
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[01:16:19] <jepler> but also I think there are some bugs with the new 'unrecognized card' code; and it falls into that code when the first thing goes wrong because of some missing error handling
[01:19:23] <PCW> Yes its time dependent (it get the joint following error only at 2 KHz, not 1 KHz)
[01:19:25] <PCW> if it ever works at 2 KHz it continues to work
[01:19:36] <jepler> hm2_eth: discovered 7I92
[01:19:36] <jepler> hm2/hm2_7i92.0: out of memory!
[01:19:40] <jepler> well that's a new one
[01:19:42] <PCW> s/it get/I get/
[01:20:06] <PCW> i think it parsing gawbidge
[01:21:51] <PCW> its
[01:21:53] <PCW> bbl dinner
[01:23:57] <jepler> yes, it would log the 'error receiving packet' message and then go on to try to do something with the received package
[01:24:01] <jepler> packet
[01:31:04] <jepler> 1437528484.790617 sendto(6, "\210]\0\0", 4, 0, NULL, 0) = 4
[01:31:05] <jepler> 1437528484.790678 recvfrom(6, 0x7fff3318af70, 16, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
[01:31:09] <jepler> 1437528484.790754 write(1, "hm2_eth: ERROR: receiving packet"..., 67) = 67
[01:32:18] <jepler> this should be going through hm2_eth_read which retries until 200*1000*1000ns pass
[01:32:56] <jepler> so it's very weird that it could get done failing after just 137000ns
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[01:48:15] <jepler> oh wait, this one's not going through the retry machinery in the first place
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[02:06:16] <jepler> well, I have a series of changes here that collectively have pushed the startup problem down from maybe 1-in-10 to less than 2-in-1000
[02:07:35] <jepler> I'll clean them up and publish them yet tonight. up to 800 successful startups after the latest fix, no failures
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[02:15:03] <jepler> .. 2100
[02:15:06] <jepler> I think it might be fixed
[02:19:57] <jepler> .. 4400
[02:21:36] <jepler> 5000+
[02:21:50] <jepler> (boy starting got faster after I took my debugging stuff all back out too)
[02:34:22] <KGB-linuxcnc> 03Jeff Epler 05jepler/hm2-eth-startup ff37886 06linuxcnc 10src/rtapi/uspace_rtapi_app.cc uspace: ensure that the thread-specific key is initialized * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=ff37886
[02:34:22] <KGB-linuxcnc> 03Jeff Epler 05jepler/hm2-eth-startup e63a15d 06linuxcnc 10src/hal/drivers/mesa-hostmot2/hm2_eth.c hm2_eth: reset errno before socket recv * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=e63a15d
[02:34:22] <KGB-linuxcnc> 03Jeff Epler 05jepler/hm2-eth-startup 36a8145 06linuxcnc 10src/hal/drivers/mesa-hostmot2/hm2_eth.c hm2_eth: handle socket errors in hm2_eth_probe * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=36a8145
[02:34:27] <KGB-linuxcnc> 03Jeff Epler 05jepler/hm2-eth-startup 214c71b 06linuxcnc 10src/hal/drivers/mesa-hostmot2/hm2_eth.c hm2_eth: don't use nonblocking socket * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=214c71b
[02:34:31] <KGB-linuxcnc> 03Jeff Epler 05jepler/hm2-eth-startup f3c9158 06linuxcnc 10src/hal/drivers/mesa-hostmot2/hm2_eth.c hm2_eth: use a longer timeout during setup * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=f3c9158
[02:34:35] <KGB-linuxcnc> 03Jeff Epler 05jepler/hm2-eth-startup 5bc678a 06linuxcnc 10src/hal/drivers/mesa-hostmot2/hm2_eth.c hm2_eth: allow time for the probe request packet to come back * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=5bc678a
[02:34:42] <jepler> this branch is based on 2.7 and solves several kinds of intermittent startup problems with hm2-eth.
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[02:38:37] <jepler> 10000 startups
[02:39:40] <jepler> (these are halrun startups, not linuxcnc startups)
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[02:52:47] <pcw_home> I'll have to see if that fixes the joint FE's at 2 KHz. It sort of looks like some initialization silently failed
[02:53:37] <jepler> I also recommend using the read-request functions. doing the split read is not automatic, you have to do it manually with your addfs
[02:53:49] <jepler> put the read-request for each board first, then the read for each board
[02:57:34] <pcw_home> So if only read is called, it does the request/read automatically
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[03:09:14] <pcw_home> can you reorder the reads to allow some optimization?
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[12:17:08] <jepler> I suppose you're best off putting the read-request that you expect to be largest in bytes, first
[12:18:44] <jepler> but yes, to get the benefit of overlapping the turnaround time for packets, you have to use the read-request functions
[12:19:01] <jepler> I didn't come up with a clever way for linuxcnc to do it automatically
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[14:40:02] <pcw_home> Manual is fine, I'll have to play and see which is best, it does seem like the biggest first would be best but I'm not sure
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[15:12:06] <KGB-linuxcnc> 03John Thornton 052.7 9310bc2 06linuxcnc 10(19 files in 4 dirs) Docs: rename spanish docs to follow lower case dash convention * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=9310bc2
[15:12:06] <KGB-linuxcnc> 03John Thornton 052.7 ad4e984 06linuxcnc 10(68 files in 11 dirs) Docs: delete out of date untranslated spanish docs * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=ad4e984
[15:12:06] <KGB-linuxcnc> 03John Thornton 052.7 603eae8 06linuxcnc 10docs/src/Submakefile 03docs/src/gui/gmoccapy-hu.txt 04docs/src/gui/gmoccapy_hu.txt 10docs/src/index.tmpl Docs: add hungarian translated document to build system * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=603eae8
[15:12:25] <jthornton> 3 things left on the list
[15:13:54] <seb_kuzminsky> cool
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[15:26:26] <seb_kuzminsky> jthornton: francis tisserant (the french translations guy) and i have been experimenting with po4a for managing the docs translations, it's in the (very old now) branch called seb/master/po4a, do you have any input on that?
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[17:35:09] <andypugh> carousel_demo apparently gives a “duplicate O-word label” error on the second toolchange, then never again. There isn’t one. Any ideas?
[17:38:56] <archivist> I wondered if he was using it with some of his own gcode
[17:41:42] <andypugh> No, I see the same issue, but put it down to asking for a tool that didn’t exist
[17:46:31] <andypugh> But it still happens (once-only) when the tool exists.
[17:46:45] <andypugh> I suspect it’s a subtle remap bug :-(
[17:47:30] <andypugh> Unfortunately it isn’t harmless, it aborts the tool chinge with the head down.
[17:56:53] <seb_kuzminsky> yuck
[17:57:06] <seb_kuzminsky> i suspect there are plenty of subtle remap bugs lurking
[17:57:58] <jepler> it's unfortunate we didn't test remap harder before it landed in our master branch
[17:58:18] <andypugh> I need to head off for dinner with my coleagues now, but I would appreciate it if some other folk could try to reproduce it. Open the config, home machine, then MDI T1 M6 / T2 M6
[17:58:22] <jepler> wasn't it one of mah's projects? You might go diving in their git to see if they have fixed any bugs in it
[17:59:34] <andypugh> Hmm, I think I burned those bridges.
[18:00:06] <cradek> I pull their master every so often. In all this time I've seen about two fixes to the core as we know it
[18:03:00] <cradek> just pulled again, I don't see anything
[18:03:24] <cradek> there may be work in other branches I don't see
[18:03:32] <andypugh> OK, back later, I will scroll back.
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[18:22:57] <jthornton> seb_kuzminsky, I don't see that branch on git.linuxcnc, after I'm finished building I'll do a git branch -r
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[19:08:36] <PCW> With the read-request in hal, running 2 Ethernet cards at 3KHz through the switch!
[19:08:54] <jepler> PCW: excellent
[19:09:39] <PCW> still has the startup issue (doest start at 3 KHz every time)
[19:10:14] <jepler> humbug.
[19:10:28] <skunkworks> In trajectory planner testing.. I found another bug in a 2 axis only config. (acc violation of a 1/3rd or so) so - almost
[19:10:31] <jepler> fails to start, or appears to start but gives following error?
[19:11:19] <PCW> failed to start once ( I dId not use your latest startup patchea so its expected)
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[19:12:15] <PCW> almost cuts the servo thread total time in 1/2
[19:12:26] <PCW> (to use read-request)
[19:13:00] <PCW> ~600k clocks vs 980K
[19:15:44] <jepler> that is nice
[19:19:43] <PCW> as expected the second card read time is almost 0
[19:22:12] <PCW> so, Neat!
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[19:32:57] <PCW> I'll try setting up 4 cards on the H97 when I get a chance
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[19:44:04] <seb_kuzminsky> skunkworks: keep em coming!
[19:44:34] <skunkworks> rob has been squashinng them quite quickly. I think that is the last one. (until we find more...)
[19:46:08] <seb_kuzminsky> oh good, it's always nice when you find the last bug
[19:47:58] <jepler> every time
[19:48:04] <jepler> .. I keep feeling like that wrt hm2_eth
[19:48:48] <skunkworks> to bad it isn't like finding your car keys - always the last place you look...
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[20:04:44] <mozmck> problem I often have is, I find a bug, fix it, and the fix creates 3 new ones :)
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[20:43:37] <KGB-linuxcnc> 03John Thornton 052.7 0dbc60c 06linuxcnc 10docs/src/gui/gladevcp.txt 10docs/src/gui/gladevcp_fr.txt 04docs/src/gui/images/emc-actions.png 03docs/src/gui/images/vcp-actions.png Docs: rebranding update * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=0dbc60c
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[21:52:34] <andypugh> OK, so this only remained connected for 10 mins after I left.
[21:52:54] <andypugh> Did I miss anything in particular?
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[21:59:05] <Tom_itx> zlog
[21:59:06] <zlog> Tom_itx: Log stored at
http://tom-itx.no-ip.biz:81/~tom-itx/irc/logs/%23linuxcnc-devel/2015-07-22.html
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