Can you capture "cat /proc/$(pgrep vpp)/maps” and put it into pastebin?
— Damjan > On 24 Jan 2020, at 09:07, siddarth rai <[email protected]> wrote: > > Hi, > > Thanks a lot for the tip. > > I would still like to know what is causing DPDK plugin to take up so much > VSZ. > If any one can give me any pointers I will try and debug it further to > hopefully control the VSZ. > > Regards, > Siddarth > > On Tue, Dec 17, 2019 at 2:57 PM Benoit Ganne (bganne) <[email protected] > <mailto:[email protected]>> wrote: > Hi Siddarth, > > > The issue here is that huge core files are generated, which take up a lot > > of space and the system down time is huge too. > > Even if I compress it, I will have to de-compress wherever I try to debug > > it and the disk space requirement will be huge. > > I know this will not fix your issue, however that might help: > - when the core file is generated, if the VA is not in use it should not > take space on the disk because it should be stored as a sparse file. Here is > an example I have locally (note the 117M allocated on disk vs the 2.6G > "virtual" size): > bganne@ubuntu1804:~$ ls -lsh core > 117M -rw-rw-r-- 1 bganne bganne 2.6G Nov 12 15:34 core > Also, if you do not compress it at generation time (via > /proc/sys/kernel/core_pattern or similar) it should not impact the downtime > as it is simply not written nor processed > - if you compress/decompress it with gzip, it will not produce a sparse file > but you can 're-sparse' it using eg. dd: > bganne@ubuntu1804:~$ zcat core.gz | dd conv=sparse of=core > > Ben
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