This is a log from CMS with -verbosegc

8.012: [ParNew 84832K->79546K(162816K), 0.0293764 secs]
8.043: [GC 79546K(162816K), 0.0004823 secs]
8.140: [ParNew 89658K->84364K(162816K), 0.0271073 secs]
8.673: [ParNew 94476K->86063K(162816K), 0.0254789 secs]
9.276: [GC 93707K(162816K), 0.0369005 secs]
9.426: [ParNew 83265K->74974K(162816K), 0.0217100 secs]
9.830: [ParNew 85086K->76329K(162816K), 0.0062086 secs]

The GCs at 8.043 and 9.276 were initial-mark and remark respectively, but this is not specified in the log. It'd be nice to do that to make the log more readable.