* [lttng-dev] LTTng 32 bits on 64 bits systems - kernel events... but no user-event @ 2021-06-04 13:09 MONTET Julien via lttng-dev 2021-06-07 14:54 ` Mathieu Desnoyers via lttng-dev 2021-06-07 15:24 ` Jonathan Rajotte-Julien via lttng-dev 0 siblings, 2 replies; 5+ messages in thread From: MONTET Julien via lttng-dev @ 2021-06-04 13:09 UTC (permalink / raw) To: lttng-dev [-- Attachment #1.1: Type: text/plain, Size: 1968 bytes --] Hi LTTng team, I am currently trying to add lttng 32bits on a 64bits system with a custom kernel 4.19.177+ x86_64 (Debian 10.9) My former attempt only with only a 100% arm32 bits was successful (raspberry). I am facing now a strange issue : I can record kernel event but not userspace event... but I can see these user-event (see below)! (tuto : https://lttng.org/docs/#doc-instrumenting-32-bit-app-on-64-bit-system) I followed two times the tutorial : on lttng 2.12 and lttng 2.10. I am on lttng (LTTng Trace Control) 2.10.11 - KeKriek now All installation seemed to install without any error. The only thing I added is at the very end where I did a : ln -s /usr/local/bin/lttng /usr/bin/lttng (to directly call commands like "lttng start") Here some interesting outputs, I am using this projet as an example : https://lttng.org/docs/#doc-tracing-your-own-user-application lttng list -u : OK Ubuntu Pastebin<https://paste.ubuntu.com/p/hZptnNzySw/> LTTNG_UST_DEBUG=1 ./hello : seems OK : Ubuntu Pastebin<https://paste.ubuntu.com/p/w6xHrJsWJ9/> kernel-event output : Ubuntu Pastebin<https://paste.ubuntu.com/p/5KfyS8wVdb/> user-event ouput : none - the output folder stated with lttng create my-user-session --output=/tmp/my-user-session doesn't even appear apt-file search lttng : Ubuntu Pastebin<https://paste.ubuntu.com/p/xMcCc7bqwk/> lsmod | grep lttng : Ubuntu Pastebin<https://paste.ubuntu.com/p/7YNkNsh9Fr/> Note : file /usr/local/bin/lttng (the exe I am using) gives : /usr/local/bin/lttng: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 3.2.0, BuildID[sha1]=542a108c40e386c17027c2c8f8fcb30e278b7748, with debug_info, not stripped I am wondering if the installation didn't pick a 64bits RCU and analyses programms only on this. However, I have currently absolutely no idea how to debug this. Could you advise me some methods ? Regards, [-- Attachment #1.2: Type: text/html, Size: 4131 bytes --] [-- Attachment #2: Type: text/plain, Size: 156 bytes --] _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [lttng-dev] LTTng 32 bits on 64 bits systems - kernel events... but no user-event 2021-06-04 13:09 [lttng-dev] LTTng 32 bits on 64 bits systems - kernel events... but no user-event MONTET Julien via lttng-dev @ 2021-06-07 14:54 ` Mathieu Desnoyers via lttng-dev 2021-06-07 15:24 ` Jonathan Rajotte-Julien via lttng-dev 1 sibling, 0 replies; 5+ messages in thread From: Mathieu Desnoyers via lttng-dev @ 2021-06-07 14:54 UTC (permalink / raw) To: MONTET Julien; +Cc: lttng-dev ----- On Jun 4, 2021, at 9:09 AM, lttng-dev lttng-dev@lists.lttng.org wrote: > Hi LTTng team, > I am currently trying to add lttng 32bits on a 64bits system with a custom > kernel 4.19.177+ x86_64 (Debian 10.9) > My former attempt only with only a 100% arm32 bits was successful (raspberry). > I am facing now a strange issue : I can record kernel event but not userspace > event... but I can see these user-event (see below)! > (tuto : [ https://lttng.org/docs/#doc-instrumenting-32-bit-app-on-64-bit-system > | https://lttng.org/docs/#doc-instrumenting-32-bit-app-on-64-bit-system ] ) > I followed two times the tutorial : on lttng 2.12 and lttng 2.10. > I am on lttng (LTTng Trace Control) 2.10.11 - KeKriek now > All installation seemed to install without any error. > The only thing I added is at the very end where I did a : ln -s > /usr/local/bin/lttng /usr/bin/lttng (to directly call commands like "lttng > start") > Here some interesting outputs, I am using this projet as an example : [ > https://lttng.org/docs/#doc-tracing-your-own-user-application | > https://lttng.org/docs/#doc-tracing-your-own-user-application ] > lttng list -u : OK [ https://paste.ubuntu.com/p/hZptnNzySw/ | Ubuntu Pastebin ] > LTTNG_UST_DEBUG=1 ./hello : seems OK : [ https://paste.ubuntu.com/p/w6xHrJsWJ9/ > | Ubuntu Pastebin ] > kernel-event output : [ https://paste.ubuntu.com/p/5KfyS8wVdb/ | Ubuntu Pastebin > ] > user-event ouput : none - the output folder stated with lttng create > my-user-session --output=/tmp/my-user-session doesn't even appear > apt-file search lttng : [ https://paste.ubuntu.com/p/xMcCc7bqwk/ | Ubuntu > Pastebin ] > lsmod | grep lttng : [ https://paste.ubuntu.com/p/7YNkNsh9Fr/ | Ubuntu Pastebin > ] > Note : file /usr/local/bin/lttng (the exe I am using) gives : > /usr/local/bin/lttng: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), > dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux > 3.2.0, BuildID[sha1]=542a108c40e386c17027c2c8f8fcb30e278b7748, with debug_info, > not stripped > I am wondering if the installation didn't pick a 64bits RCU and analyses > programms only on this. > However, I have currently absolutely no idea how to debug this. > Could you advise me some methods ? Did you follow this section of the documentation ? https://lttng.org/docs/#doc-instrumenting-32-bit-app-on-64-bit-system Thanks, Mathieu > Regards, > _______________________________________________ > lttng-dev mailing list > lttng-dev@lists.lttng.org > https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [lttng-dev] LTTng 32 bits on 64 bits systems - kernel events... but no user-event 2021-06-04 13:09 [lttng-dev] LTTng 32 bits on 64 bits systems - kernel events... but no user-event MONTET Julien via lttng-dev 2021-06-07 14:54 ` Mathieu Desnoyers via lttng-dev @ 2021-06-07 15:24 ` Jonathan Rajotte-Julien via lttng-dev 2021-06-07 21:19 ` MONTET Julien via lttng-dev 1 sibling, 1 reply; 5+ messages in thread From: Jonathan Rajotte-Julien via lttng-dev @ 2021-06-07 15:24 UTC (permalink / raw) To: MONTET Julien; +Cc: lttng-dev Hi, > I am currently trying to add lttng 32bits on a 64bits system with a custom > kernel 4.19.177+ x86_64 (Debian 10.9) > My former attempt only with only a 100% arm32 bits was successful (raspberry). > I am facing now a strange issue : I can record kernel event but not userspace > event... but I can see these user-event (see below)! Ok. > (tuto : [ https://lttng.org/docs/#doc-instrumenting-32-bit-app-on-64-bit-system > | https://lttng.org/docs/#doc-instrumenting-32-bit-app-on-64-bit-system ] ) > I followed two times the tutorial : on lttng 2.12 and lttng 2.10. > I am on lttng (LTTng Trace Control) 2.10.11 - KeKriek now Any particular reasons? > All installation seemed to install without any error. > The only thing I added is at the very end where I did a : ln -s > /usr/local/bin/lttng /usr/bin/lttng (to directly call commands like "lttng > start") > Here some interesting outputs, I am using this projet as an example : [ > https://lttng.org/docs/#doc-tracing-your-own-user-application | > https://lttng.org/docs/#doc-tracing-your-own-user-application ] > lttng list -u : OK [ https://paste.ubuntu.com/p/hZptnNzySw/ | Ubuntu Pastebin ] > LTTNG_UST_DEBUG=1 ./hello : seems OK : [ https://paste.ubuntu.com/p/w6xHrJsWJ9/ > | Ubuntu Pastebin ] > kernel-event output : [ https://paste.ubuntu.com/p/5KfyS8wVdb/ | Ubuntu Pastebin > ] > user-event ouput : none - the output folder stated with lttng create > my-user-session --output=/tmp/my-user-session doesn't even appear > apt-file search lttng : [ https://paste.ubuntu.com/p/xMcCc7bqwk/ | Ubuntu > Pastebin ] > lsmod | grep lttng : [ https://paste.ubuntu.com/p/7YNkNsh9Fr/ | Ubuntu Pastebin > ] Can you provide the config.log from the configure steps We are missing the most important logs: lttng-sessiond. $ lttng-sessiond -vvv --verbose-consumer > Note : file /usr/local/bin/lttng (the exe I am using) gives : > /usr/local/bin/lttng: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), > dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux > 3.2.0, BuildID[sha1]=542a108c40e386c17027c2c8f8fcb30e278b7748, with debug_info, > not stripped This is normal. Concretely to support tracing of 32 bit applications only a 32 bits lttng-consumerd executable is needed which is launched by the lttng-sessiond executable. > I am wondering if the installation didn't pick a 64bits RCU and analyses > programms only on this. Hmmm, what indicate this? I seriously doubt that this can happen. > However, I have currently absolutely no idea how to debug this. I decided to do the process on a clean ubuntu 20.04 machine. For 2.12 there is some problems when compiling only lttng-consumerd (fd-tracker lib and libcommon problem). I plan on providing a patch shortly. But the major problem is that the path passed at configure time for the lttng-consumerd32 bit daemon are simply not used at runtime. See this bug I just opened [1]. This is valid for 2.10 all the way to master AFAIK. [1] https://bugs.lttng.org/issues/1318 In the meantime you will have to pass the lttng-consumerd 32 bit path as argument or env variables to lttng-sessiond as such: $ lttng-sessiond -vvv --verbose-consumer --consumerd32-libdir=/usr/local/lib32 --consumerd32-path=/usr/local/lib32/lttng/libexec/lttng-consumerd or $ LTTNG_CONSUMERD32_BIN=/usr/local/lib32/lttng/libexec/lttng-consumerd LTTNG_CONSUMERD32_LIBDIR=/usr/local/lib32 lttng-sessiond -vvv --verbose-consumer From there the 32bits application is traced correctly and data is gathered without any problem (at least on 2.12). ``` [15:22:24.500655502] (+?.?????????) ubuntu2004.localdomain lttng_ust_statedump:start: { cpu_id = 3 }, { } [15:22:24.500661538] (+0.000006036) ubuntu2004.localdomain lttng_ust_statedump:procname: { cpu_id = 3 }, { procname = "hello" } [15:22:24.502611224] (+0.001949686) ubuntu2004.localdomain lttng_ust_statedump:bin_info: { cpu_id = 3 }, { baddr = 0xF7EC9000, memsz = 20596, path = "/usr/lib32/libdl-2.31.so", is_pic = 1, has_build_id = 1, has_debug_link = 1 } [15:22:24.502614501] (+0.000003277) ubuntu2004.localdomain lttng_ust_statedump:build_id: { cpu_id = 3 }, { baddr = 0xF7EC9000, _build_id_length = 20, build_id = [ [0] = 0x75, [1] = 0x1E, [2] = 0xDD, [3] = 0x47, [4] = 0x72, [5] = 0x3, [6] ``` Cheers _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [lttng-dev] LTTng 32 bits on 64 bits systems - kernel events... but no user-event 2021-06-07 15:24 ` Jonathan Rajotte-Julien via lttng-dev @ 2021-06-07 21:19 ` MONTET Julien via lttng-dev 2021-06-07 21:37 ` Jonathan Rajotte-Julien via lttng-dev 0 siblings, 1 reply; 5+ messages in thread From: MONTET Julien via lttng-dev @ 2021-06-07 21:19 UTC (permalink / raw) To: Jonathan Rajotte-Julien; +Cc: lttng-dev [-- Attachment #1.1: Type: text/plain, Size: 9529 bytes --] Hi, I installed KeKriek version because it is the one recommanded by the apt-get of Debian Buster 10.9 (LTTng 2.10). Debian -- Détails du paquet lttng-tools dans buster<https://packages.debian.org/buster/lttng-tools> I tried multiple times to install LTTng 2.12 without success, so I stayed in LTTng 2.10. Find below the output of : lttng-sessiond -vvv --verbose-consumer https://paste.ubuntu.com/p/NrtyCqhHZc/ (I have got the same with LTTNG_CONSUMERD32_BIN=/usr/local/lib32/lttng/libexec/lttng-consumerd LTTNG_CONSUMERD32_LIBDIR=/usr/local/lib32 lttng-sessiond -vvv --verbose-consumer) Yes, I had the issue below few days ago with LTTng 2.12 "For 2.12 there is some problems when compiling only lttng-consumerd (fd-tracker lib and libcommon problem)." Thank you ! The following modification is working : lttng-sessiond --consumerd32-libdir=/usr/local/lib32 --consumerd32-path=/usr/local/lib32/lttng/libexec/lttng-consumerd --daemonize Regards, Julien ________________________________ De : Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com> Envoyé : lundi 7 juin 2021 17:24 À : MONTET Julien <julien.montet@reseau.eseo.fr> Cc : lttng-dev <lttng-dev@lists.lttng.org> Objet : Re: [lttng-dev] LTTng 32 bits on 64 bits systems - kernel events... but no user-event Hi, > I am currently trying to add lttng 32bits on a 64bits system with a custom > kernel 4.19.177+ x86_64 (Debian 10.9) > My former attempt only with only a 100% arm32 bits was successful (raspberry). > I am facing now a strange issue : I can record kernel event but not userspace > event... but I can see these user-event (see below)! Ok. > (tuto : [ https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flttng.org%2Fdocs%2F%23doc-instrumenting-32-bit-app-on-64-bit-system&data=04%7C01%7Cjulien.montet%40reseau.eseo.fr%7C9b85f601067749845a2408d929c85983%7C4d7ad1591265437ab9f62946247d5bf9%7C0%7C0%7C637586762735252731%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=5NB2nNrI17uwSE1Xpn1Uf6sbrRXbEePidPNXUh4ps7k%3D&reserved=0 > | https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flttng.org%2Fdocs%2F%23doc-instrumenting-32-bit-app-on-64-bit-system&data=04%7C01%7Cjulien.montet%40reseau.eseo.fr%7C9b85f601067749845a2408d929c85983%7C4d7ad1591265437ab9f62946247d5bf9%7C0%7C0%7C637586762735252731%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=5NB2nNrI17uwSE1Xpn1Uf6sbrRXbEePidPNXUh4ps7k%3D&reserved=0 ] ) > I followed two times the tutorial : on lttng 2.12 and lttng 2.10. > I am on lttng (LTTng Trace Control) 2.10.11 - KeKriek now Any particular reasons? > All installation seemed to install without any error. > The only thing I added is at the very end where I did a : ln -s > /usr/local/bin/lttng /usr/bin/lttng (to directly call commands like "lttng > start") > Here some interesting outputs, I am using this projet as an example : [ > https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flttng.org%2Fdocs%2F%23doc-tracing-your-own-user-application&data=04%7C01%7Cjulien.montet%40reseau.eseo.fr%7C9b85f601067749845a2408d929c85983%7C4d7ad1591265437ab9f62946247d5bf9%7C0%7C0%7C637586762735262680%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=6RTEjlZmpq2CZoIUD%2Fs5ySx60Zqd4JMByVejF8nQ7Vk%3D&reserved=0 | > https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Flttng.org%2Fdocs%2F%23doc-tracing-your-own-user-application&data=04%7C01%7Cjulien.montet%40reseau.eseo.fr%7C9b85f601067749845a2408d929c85983%7C4d7ad1591265437ab9f62946247d5bf9%7C0%7C0%7C637586762735262680%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=6RTEjlZmpq2CZoIUD%2Fs5ySx60Zqd4JMByVejF8nQ7Vk%3D&reserved=0 ] > lttng list -u : OK [ https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpaste.ubuntu.com%2Fp%2FhZptnNzySw%2F&data=04%7C01%7Cjulien.montet%40reseau.eseo.fr%7C9b85f601067749845a2408d929c85983%7C4d7ad1591265437ab9f62946247d5bf9%7C0%7C0%7C637586762735262680%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=o71InJDxz1UgYSztgj5ENRr48MmLhsvQvPCO4GeOJ40%3D&reserved=0 | Ubuntu Pastebin ] > LTTNG_UST_DEBUG=1 ./hello : seems OK : [ https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpaste.ubuntu.com%2Fp%2Fw6xHrJsWJ9%2F&data=04%7C01%7Cjulien.montet%40reseau.eseo.fr%7C9b85f601067749845a2408d929c85983%7C4d7ad1591265437ab9f62946247d5bf9%7C0%7C0%7C637586762735262680%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=%2FWcFiJDvDaGP0BxZaHVsk7MH91zwvcgmw7vOnDkkHGg%3D&reserved=0 > | Ubuntu Pastebin ] > kernel-event output : [ https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpaste.ubuntu.com%2Fp%2F5KfyS8wVdb%2F&data=04%7C01%7Cjulien.montet%40reseau.eseo.fr%7C9b85f601067749845a2408d929c85983%7C4d7ad1591265437ab9f62946247d5bf9%7C0%7C0%7C637586762735262680%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=uHI4%2FeLn3gupvZO0DKksc7msLSacG%2Bkp2daShuKr7Wg%3D&reserved=0 | Ubuntu Pastebin > ] > user-event ouput : none - the output folder stated with lttng create > my-user-session --output=/tmp/my-user-session doesn't even appear > apt-file search lttng : [ https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpaste.ubuntu.com%2Fp%2FxMcCc7bqwk%2F&data=04%7C01%7Cjulien.montet%40reseau.eseo.fr%7C9b85f601067749845a2408d929c85983%7C4d7ad1591265437ab9f62946247d5bf9%7C0%7C0%7C637586762735262680%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=%2BXXEGKYhAexDJnfDDb%2Fc2QjscpT%2FH49pkT0yI%2FlLh8Q%3D&reserved=0 | Ubuntu > Pastebin ] > lsmod | grep lttng : [ https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpaste.ubuntu.com%2Fp%2F7YNkNsh9Fr%2F&data=04%7C01%7Cjulien.montet%40reseau.eseo.fr%7C9b85f601067749845a2408d929c85983%7C4d7ad1591265437ab9f62946247d5bf9%7C0%7C0%7C637586762735262680%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=OYHATk5CBw3pIRB9Z3Cw56BiHJCknRzh09s1F%2B4wR%2FY%3D&reserved=0 | Ubuntu Pastebin > ] Can you provide the config.log from the configure steps We are missing the most important logs: lttng-sessiond. $ lttng-sessiond -vvv --verbose-consumer > Note : file /usr/local/bin/lttng (the exe I am using) gives : > /usr/local/bin/lttng: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), > dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux > 3.2.0, BuildID[sha1]=542a108c40e386c17027c2c8f8fcb30e278b7748, with debug_info, > not stripped This is normal. Concretely to support tracing of 32 bit applications only a 32 bits lttng-consumerd executable is needed which is launched by the lttng-sessiond executable. > I am wondering if the installation didn't pick a 64bits RCU and analyses > programms only on this. Hmmm, what indicate this? I seriously doubt that this can happen. > However, I have currently absolutely no idea how to debug this. I decided to do the process on a clean ubuntu 20.04 machine. For 2.12 there is some problems when compiling only lttng-consumerd (fd-tracker lib and libcommon problem). I plan on providing a patch shortly. But the major problem is that the path passed at configure time for the lttng-consumerd32 bit daemon are simply not used at runtime. See this bug I just opened [1]. This is valid for 2.10 all the way to master AFAIK. [1] https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugs.lttng.org%2Fissues%2F1318&data=04%7C01%7Cjulien.montet%40reseau.eseo.fr%7C9b85f601067749845a2408d929c85983%7C4d7ad1591265437ab9f62946247d5bf9%7C0%7C0%7C637586762735262680%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=EV2j354mEqvEeW46AAnyn7pbutOdn0HtWOjI%2BMbUf3Y%3D&reserved=0 In the meantime you will have to pass the lttng-consumerd 32 bit path as argument or env variables to lttng-sessiond as such: $ lttng-sessiond -vvv --verbose-consumer --consumerd32-libdir=/usr/local/lib32 --consumerd32-path=/usr/local/lib32/lttng/libexec/lttng-consumerd or $ LTTNG_CONSUMERD32_BIN=/usr/local/lib32/lttng/libexec/lttng-consumerd LTTNG_CONSUMERD32_LIBDIR=/usr/local/lib32 lttng-sessiond -vvv --verbose-consumer From there the 32bits application is traced correctly and data is gathered without any problem (at least on 2.12). ``` [15:22:24.500655502] (+?.?????????) ubuntu2004.localdomain lttng_ust_statedump:start: { cpu_id = 3 }, { } [15:22:24.500661538] (+0.000006036) ubuntu2004.localdomain lttng_ust_statedump:procname: { cpu_id = 3 }, { procname = "hello" } [15:22:24.502611224] (+0.001949686) ubuntu2004.localdomain lttng_ust_statedump:bin_info: { cpu_id = 3 }, { baddr = 0xF7EC9000, memsz = 20596, path = "/usr/lib32/libdl-2.31.so", is_pic = 1, has_build_id = 1, has_debug_link = 1 } [15:22:24.502614501] (+0.000003277) ubuntu2004.localdomain lttng_ust_statedump:build_id: { cpu_id = 3 }, { baddr = 0xF7EC9000, _build_id_length = 20, build_id = [ [0] = 0x75, [1] = 0x1E, [2] = 0xDD, [3] = 0x47, [4] = 0x72, [5] = 0x3, [6] ``` Cheers [-- Attachment #1.2: Type: text/html, Size: 22184 bytes --] [-- Attachment #2: Type: text/plain, Size: 156 bytes --] _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [lttng-dev] LTTng 32 bits on 64 bits systems - kernel events... but no user-event 2021-06-07 21:19 ` MONTET Julien via lttng-dev @ 2021-06-07 21:37 ` Jonathan Rajotte-Julien via lttng-dev 0 siblings, 0 replies; 5+ messages in thread From: Jonathan Rajotte-Julien via lttng-dev @ 2021-06-07 21:37 UTC (permalink / raw) To: MONTET Julien; +Cc: lttng-dev Hi Julien, A fix is on the way for libfd-tracker lib problem: https://review.lttng.org/c/lttng-tools/+/6045 > Thank you ! The following modification is working : > lttng-sessiond --consumerd32-libdir=/usr/local/lib32 > --consumerd32-path=/usr/local/lib32/lttng/libexec/lttng-consumerd --daemonize Glad we could help. Cheers _______________________________________________ lttng-dev mailing list lttng-dev@lists.lttng.org https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2021-06-07 21:37 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-06-04 13:09 [lttng-dev] LTTng 32 bits on 64 bits systems - kernel events... but no user-event MONTET Julien via lttng-dev 2021-06-07 14:54 ` Mathieu Desnoyers via lttng-dev 2021-06-07 15:24 ` Jonathan Rajotte-Julien via lttng-dev 2021-06-07 21:19 ` MONTET Julien via lttng-dev 2021-06-07 21:37 ` Jonathan Rajotte-Julien via lttng-dev
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).