Hello Zhou, >This patch set implements parallel processing by means of multiple threads. >With this patch set, it is available to use multiple threads to read >and compress pages. This parallel process will save time. >This feature only supports creating dumpfile in kdump-compressed format from >vmcore in kdump-compressed format or elf format. Currently, sadump and > xen kdump are not supported. makedumpfile already has a parallel processing feature (--split), it parallelizes not only page compression but also disk i/o, so I think --split includes what you want to do by this patch. In what case do you think this patch will be effective, what is the advantage of this patch ? Thanks Atsushi Kumagai > >Qiao Nuohan (11): > Add readpage_kdump_compressed_parallel > Add mappage_elf_parallel > Add readpage_elf_parallel > Add read_pfn_parallel > Add function to initial bitmap for parallel use > Add filter_data_buffer_parallel > Add write_kdump_pages_parallel to allow parallel process > Add write_kdump_pages_parallel_cyclic to allow parallel process in > cyclic_mode > Initial and free data used for parallel process > Make makedumpfile available to read and compress pages parallelly > Add usage and manual about multiple threads process > > Makefile | 2 + > erase_info.c | 29 +- > erase_info.h | 2 + > makedumpfile.8 | 24 + > makedumpfile.c | 1505 +++++++++++++++++++++++++++++++++++++++++++++++++++++++- > makedumpfile.h | 79 +++ > print_info.c | 16 + > 7 files changed, 1652 insertions(+), 5 deletions(-) > > >_______________________________________________ >kexec mailing list >kexec at lists.infradead.org >http://lists.infradead.org/mailman/listinfo/kexec
