On Fri, Apr 19, 2019 at 4:23 PM Markus Gothe <[email protected]> wrote: > > Seems to me that the implementation is seriously flawed, it decompress the > whole file into the heap and then print it out.
Can't reproduce: $ ./busybox zcat 392mbyte_gzipped_file.gz >/dev/null & pid=$!; pmap $pid; while pmap $pid; do sleep 1; done 30164: ./busybox zcat 392mbyte_gzipped_file.gz 0000000008048000 960K r-x-- busybox 0000000008138000 4K rw--- busybox 0000000008139000 4K rw--- [ anon ] 00000000083f6000 4K rw--- [ anon ] 00000000f7741000 64K rw--- [ anon ] 00000000f7751000 12K r---- [ anon ] 00000000f7754000 8K r-x-- [ anon ] 00000000ffa06000 132K rw--- [ stack ] total 1188K 30164: ./busybox zcat 392mbyte_gzipped_file.gz 0000000008048000 960K r-x-- busybox 0000000008138000 4K rw--- busybox 0000000008139000 4K rw--- [ anon ] 00000000083f6000 4K rw--- [ anon ] 00000000f7741000 64K rw--- [ anon ] 00000000f7751000 12K r---- [ anon ] 00000000f7754000 8K r-x-- [ anon ] 00000000ffa06000 132K rw--- [ stack ] total 1188K 30164: ./busybox zcat 392mbyte_gzipped_file.gz 0000000008048000 960K r-x-- busybox 0000000008138000 4K rw--- busybox 0000000008139000 4K rw--- [ anon ] 00000000083f6000 4K rw--- [ anon ] 00000000f7741000 64K rw--- [ anon ] 00000000f7751000 12K r---- [ anon ] 00000000f7754000 8K r-x-- [ anon ] 00000000ffa06000 132K rw--- [ stack ] total 1188K 30164: ./busybox zcat 392mbyte_gzipped_file.gz 0000000008048000 960K r-x-- busybox 0000000008138000 4K rw--- busybox 0000000008139000 4K rw--- [ anon ] 00000000083f6000 4K rw--- [ anon ] 00000000f7741000 64K rw--- [ anon ] 00000000f7751000 12K r---- [ anon ] 00000000f7754000 8K r-x-- [ anon ] 00000000ffa06000 132K rw--- [ stack ] total 1188K ... ... 30164: ./busybox zcat 392mbyte_gzipped_file.gz 0000000008048000 960K r-x-- busybox 0000000008138000 4K rw--- busybox 0000000008139000 4K rw--- [ anon ] 00000000083f6000 4K rw--- [ anon ] 00000000f7741000 64K rw--- [ anon ] 00000000f7751000 12K r---- [ anon ] 00000000f7754000 8K r-x-- [ anon ] 00000000ffa06000 132K rw--- [ stack ] total 1188K I see no memory usage growth. At all. _______________________________________________ busybox mailing list [email protected] http://lists.busybox.net/mailman/listinfo/busybox
