11-05-2011
Hi Corona,
Thanks for your suggestion. Here is the log from strace:
_newselect(0, NULL, NULL, NULL, {0, 16576}) = 0 (Timeout)
open("/dev/spidev0.0", O_RDWR) = 6
ioctl(6, 0x80406b00, 0x7f812fe0) = 4
time([987124305]) = 987124305
getpid() = 881
socket(PF_FILE, SOCK_DGRAM, 0) = 7
fcntl64(7, F_SETFD, FD_CLOEXEC) = 0
connect(7, {sa_family=AF_FILE, path="/dev/log"}, 16) = -1 ENOENT (No such file or directory)
close(7) = 0
time([987124305]) = 987124305
getpid() = 881
socket(PF_FILE, SOCK_DGRAM, 0) = 7
fcntl64(7, F_SETFD, FD_CLOEXEC) = 0
connect(7, {sa_family=AF_FILE, path="/dev/log"}, 16) = -1 ENOENT (No such file or directory)
close(7)
If I enable syslog, then here is the log from syslog:
Apr 13 01:20:23 UNKNOWN[881]: -----------------------------------
Apr 13 01:20:23 UNKNOWN[881]: SPIRead:467 Error No. [25], Error: [Inappropriate ioctl for device]
Apr 13 01:20:23 UNKNOWN[881]: -----------------------------------
Apr 13 01:20:23 UNKNOWN[881]: _IOC_NR(SPI_IOC_MESSAGE( 0)) 0
Apr 13 01:20:23 UNKNOWN[881]: _IOC_NR(SPI_IOC_MESSAGE(1)) 0
Apr 13 01:20:23 UNKNOWN[881]: _IOC_NR(SPI_IOC_MESSAGE(2)) 0
Apr 13 01:20:23 UNKNOWN[881]: _IOC_DIR(SPI_IOC_MESSAGE(2)) 4
Apr 13 01:20:23 UNKNOWN[881]: _IOC_WRITE 4
Do you have any comment on this?
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LEARN ABOUT FREEBSD
strace-log-merge
STRACE-LOG-MERGE(1) General Commands Manual STRACE-LOG-MERGE(1)
NAME
strace-log-merge - merge strace -ff -tt output
SYNOPSIS
strace-log-merge STRACE_LOG
strace-log-merge --help
DESCRIPTION
strace-log-merge merges the output of strace -ff -tt[t] command, prepending PID to each line and sorting the result using time stamp as a
key.
OPTIONS
--help Show program usage and exit.
STRACE_LOG
Output file name prefix of files produced by a strace -ff -tt[t] command.
EXIT STATUS
0 Success
Non-zero
Error occurred: either no argument specified (in that case a usage is printed), or something went wrong during the processing of
STRACE_LOG.* files.
USAGE EXAMPLE
$ strace -o sleepy -ff -tt -e trace=execve,nanosleep
sh -c 'sleep 0.1 & sleep 0.2 & sleep 0.3'
$ strace-log-merge sleepy | fold -w 72 -s
13475 21:13:52.040837 execve("/bin/sh", ["sh", "-c", "sleep 0.1 & sleep
0.2 & sleep 0."...], 0x7ffde54b2450 /* 33 vars */) = 0
13478 21:13:52.044050 execve("/bin/sleep", ["sleep", "0.3"],
0x5631be4f87a8 /* 33 vars */) = 0
13476 21:13:52.044269 execve("/bin/sleep", ["sleep", "0.1"],
0x5631be4f87a8 /* 33 vars */) = 0
13477 21:13:52.044389 execve("/bin/sleep", ["sleep", "0.2"],
0x5631be4f87a8 /* 33 vars */) = 0
13478 21:13:52.046207 nanosleep({tv_sec=0, tv_nsec=300000000}, NULL) = 0
13476 21:13:52.046303 nanosleep({tv_sec=0, tv_nsec=100000000}, NULL) = 0
13477 21:13:52.046318 nanosleep({tv_sec=0, tv_nsec=200000000}, NULL) = 0
13476 21:13:52.146852 +++ exited with 0 +++
13475 21:13:52.146942 --- SIGCHLD {si_signo=SIGCHLD,
si_code=CLD_EXITED, si_pid=13476, si_uid=1000, si_status=0, si_utime=0,
si_stime=0} ---
13477 21:13:52.247782 +++ exited with 0 +++
13475 21:13:52.247885 --- SIGCHLD {si_signo=SIGCHLD,
si_code=CLD_EXITED, si_pid=13477, si_uid=1000, si_status=0, si_utime=0,
si_stime=0} ---
13478 21:13:52.347680 +++ exited with 0 +++
13475 21:13:52.347786 --- SIGCHLD {si_signo=SIGCHLD,
si_code=CLD_EXITED, si_pid=13478, si_uid=1000, si_status=0, si_utime=0,
si_stime=0} ---
13475 21:13:52.348069 +++ exited with 0 +++
NOTES
strace-log-merge does not work well with strace logs generated by strace -tt invocation that pass midnight, as those lack the information
required for the proper sorting. Employing the -ttt option in the respective strace invocation should solve the problem.
BUGS
strace-log-merge does not perform any checks whether the files specified are in the correct format and implies that only files from a sin-
gle strace session match STRACE_LOG.* glob pattern.
HISTORY
The initial version of strace-log-merge was written by Denys Vlasenko in 2012.
REPORTING BUGS
Problems with strace-log-merge should be reported to the strace mailing list at <strace-devel@lists.sourceforge.net>.
SEE ALSO
strace(1)
strace UNKNOWN 2018-04-11 STRACE-LOG-MERGE(1)