I was configured Kdump and tested it by creating a crash.
everthing was working fine.
the issuse is time taken for creating a vmcore file.
it took me 3 hours to create a vmcore file over NFS.
test environment senario:
I have server with 100GB RAM for which kdump was configured.
vmcore file is created on other server using NFS share.
intially I configured crashkernal with 128M@16M. it took more than 3 hours to create vmcore file.
then i configured crashkernal with 512M@16M. it took around 1 hour to create vmcore file.
I just wanted to can increase RAM for crashkernal are then any limitation.
any other suggestions to increase the perfomance.
Thanks in advance.