ioprof fails when creating traces < 3 seconds long

~/ioprof> ioprof.py -m trace -d /dev/nvme0n1  -r 2
Mapping files to block locations                
Creating tarball nvme0n1.tar
tar -cf nvme0n1.tar blk.out.nvme0n1.*.gz fdisk.nvme0n1  &> /dev/null
ERROR: failed to tarball nvme0n1.tar

(this only happens on the python version)

Hi,

Trying to use ioprof. I've been able to obtain a tar file from a trace, but can't create the report.

./ioprof.pl (2.0.5) Unpacking sda.tar. This may take a minute. Use of uninitialized value $total_lbas in scalar chomp at ./ioprof.pl line 1985. Argument "" isn't numeric in multiplication (*) at ./ioprof.pl line 1988. Use of uninitialized value $total_lbas in multiplication (*) at ./ioprof.pl line 1988. Use of uninitialized value $total_lbas in printf at ./ioprof.pl line 1990. lbas: 0 sec_size: 0 total: 0.00 GiB Use of uninitialized value $total_lbas in multiplication (*) at ./ioprof.pl line 1992. Time to parse. Please wait... Finished parsing files. Now to analyze Done correlating files to buckets. Now time to count bucket hits.

I suspect I miss some of the 'Optional dependencies' ?

I couldn't find what you refer to specifically in the optional PDF deps :

Optional PDF report requires:

gnuplot
pdf2latex
terminal png

What are 'pdf2latex' and 'terminal png' ? Packages names ? Can you point to git repos for those ?

Thanks !

Apologies for opening a second issue so quickly.

The perl version of ioprof works correctly in "trace" mode. However, when I post-process the tar file, I get the following error message:

ioprof.pl -m post -t sdb1.tar
ioprof.pl (2.0.5)
Unpacking sdb1.tar. This may take a minute.
Argument "bytes" isn't numeric in multiplication (*) at /home/laytonjb/NVIDIA/IO_PROFILE/ioprof/ioprof.pl line 1988.
lbas: 5860531087 sec_size: 0 total: 0.00 GiB
Time to parse. Please wait...
Finished parsing files. Now to analyze
Done correlating files to buckets. Now time to count bucket hits.

Illegal modulus zero at /home/laytonjb/NVIDIA/IO_PROFILE/ioprof/ioprof.pl line 883.

Just in case, line 1988 is the following:

1988 $total_capacity_GiB = $total_lbas * $sector_size / $GiB;

Line 883 is the following:

883 while (($i % $xwidth) != 0) { $i++; $buffer .= "0 "; }

My system is Ubuntu 18.04. uname -r is "5.3.0-53-generic". (BTW - same system for the previous issue I opened).

Observation:

I'm trying to determine if ioprof can capture mmap() file IO. I'm wondering if the issue is that it didn't capture any IO so the post processing fails (no write or read bytes on the device). I can share the mmap() test code if needed (it's really, simple).

Thanks for the help!

Jeff

I tried running the Python version of ioprof and I got an error.

The command line is:

ioprof.py -m trace -d /dev/sdb1 -r 3

The error is:

VERSION: 1.0.0.1
/usr/sbin/blktrace
/usr/bin/blkparse
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
0 % done (3 seconds left)No input files found for blk.out.sdb1.0
Mapping files to block locations
Creating tarball sdb1.tar
tar -cf sdb1.tar blk.out.sdb1.*.gz fdisk.sdb1 &> /dev/null
tar: blk.out.sdb1.0.blkparse.gz: Cannot open: No such file or directory
tar: Exiting with failure status due to previous errors
FINISHED tracing: sdb1.tar
Please use this file with ioprof.py -m post -t sdb1.tar to create a report

The Perl version works correctly.

Thanks for developing the tool!