yes there are many ways to extract the information for zfs arc cache size. ::memstat is my tool, when it comes to gathering overall memory usage. my question was: why not include the arc cache size into the ::memstat output? looking at the code, its almost there.
and would it also be possible to include/extract shm-mem into ::memstat? regards, konstantin > >If all you're interested in is the ARC, then why not "::arc" ? > >FrankH. > >On Wed, 14 May 2008, Surya Prakki wrote: > >> To my understanding, zfs makes use of kmem for its arc [and ofcourse for >> zfs nodes] - this info >> you can extract using the standard '::kmastat'. >> HTH. >> -surya >> >> >> Konstantin Gremliza wrote: >>> Hi, >>> >>> I like the the ::memstat dcmd, becauss it gives a brief system >>> overview of where memory has gone. It does not show arc cache or >>> shared memory information. >>> >>> Would it be possible to add zfs arc cache size and maybe shared memory >>> information to memstat output. >>> Current code does: >>> >>> >http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/mo >dules/genunix/memory.c: >>> >>> >>> #*define* MS_PP_ISKAS ><http://cvs.opensolaris.org/source/s?refs=MS_PP_ISKAS>(pp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#pp>, stats ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#stats>) \ >>> 232 (((pp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#pp>)->p_vnode ><http://cvs.opensolaris.org/source/s?defs=p_vnode> == (stats ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#stats>)->ms_kvp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#ms_kvp>) || \ >>> 233 * (((stats ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#stats>)->ms_zvp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#ms_zvp> != NULL ><http://cvs.opensolaris.org/source/s?defs=NULL>) && ((pp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#pp>)->p_vnode ><http://cvs.opensolaris.org/source/s?defs=p_vnode> == (stats ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#stats>)->ms_zvp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#ms_zvp>))*) >>> >>> Isn`t zvp the zfs arc cache? >>> Could we add a new zfs stat to the memstat_t? >>> >>> >>> >>> 234 >>> 235 /* >>> 236 * Summarize pages by type; called from page walker. >>> 237 */ >>> 238 >>> 239 /* ARGSUSED */ >>> 240 *static* *int* >>> 241 memstat_callback ><http://cvs.opensolaris.org/source/s?refs=memstat_callback>(page_t ><http://cvs.opensolaris.org/source/s?defs=page_t> *page, page_t ><http://cvs.opensolaris.org/source/s?defs=page_t> *pp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#pp>, memstat_t ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#memstat_t> *stats ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#stats>) >>> 242 { >>> 243 *struct* vnode <http://cvs.opensolaris.org/source/s?defs=vnode> >>> vn ><http://cvs.opensolaris.org/source/s?refs=vn>, *vp ><http://cvs.opensolaris.org/source/s?refs=vp>; >>> 244 uintptr_t <http://cvs.opensolaris.org/source/s?defs=uintptr_t> >>> ptr ><http://cvs.opensolaris.org/source/s?refs=ptr>; >>> 245 >>> 246 /* read page's vnode pointer */ >>> 247 *if* ((ptr = (uintptr_t ><http://cvs.opensolaris.org/source/s?defs=uintptr_t>)(pp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#pp>->p_vnode ><http://cvs.opensolaris.org/source/s?defs=p_vnode>)) != NULL ><http://cvs.opensolaris.org/source/s?defs=NULL>) { >>> 248 *if* (mdb_vread ><http://cvs.opensolaris.org/source/s?defs=mdb_vread>(&vn, *sizeof* (vnode_t ><http://cvs.opensolaris.org/source/s?defs=vnode_t>), ptr) == -1) { >>> 249 mdb_warn ><http://cvs.opensolaris.org/source/s?defs=mdb_warn>("unable to read vnode_t at >%#lx", >>> 250 ptr); >>> 251 *return* (WALK_ERR ><http://cvs.opensolaris.org/source/s?defs=WALK_ERR>); >>> 252 } >>> 253 vp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#vp> = &vn; >>> 254 } *else* >>> 255 vp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#vp> = NULL ><http://cvs.opensolaris.org/source/s?defs=NULL>; >>> 256 >>> 257 *if* (PP_ISFREE ><http://cvs.opensolaris.org/source/s?defs=PP_ISFREE>(pp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#pp>)) >>> 258 stats ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#stats>->ms_cachelist ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#ms_cachelist>++; >>> 259 *else* *if* (vp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#vp> && IS_SWAPFSVP ><http://cvs.opensolaris.org/source/s?defs=IS_SWAPFSVP>(vp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#vp>)) >>> 260 stats ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#stats>->ms_anon ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#ms_anon>++; >>> 261 *else* *if* (MS_PP_ISKAS ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#MS_PP_ISKAS>(pp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#pp>, stats ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#stats>)) >>> 262 stats ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#stats>->ms_kmem ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#ms_kmem>++; >>> 263 *else* *if* (vp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#vp> && (((vp ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#vp>)->v_flag ><http://cvs.opensolaris.org/source/s?defs=v_flag> & VVMEXEC ><http://cvs.opensolaris.org/source/s?defs=VVMEXEC>)) != 0) >>> 264 stats ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#stats>->ms_exec ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#ms_exec>++; >>> 265 *else* >>> 266 stats ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#stats>->ms_vnode ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#ms_vnode>++; >>> 267 >>> 268 stats ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#stats>->ms_total ><http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/mdb/common/m >odules/genunix/memory.c#ms_total>++; >>> 269 >>> 270 *return* (WALK_NEXT ><http://cvs.opensolaris.org/source/s?defs=WALK_NEXT>); >>> 271 } >>> >>> Regards, Konstantin >>> >>> >>> ------------------------------------------------------------------------ >>> >>> _______________________________________________ >>> mdb-discuss mailing list >>> mdb-discuss at opensolaris.org >>> >> >> >> -- >> http://blogs.sun.com/sprakki >> >> _______________________________________________ >> mdb-discuss mailing list >> mdb-discuss at opensolaris.org >> > >------------------------------------------------------------------------------ > >No good can come from selling your freedom, not for all the gold in the >world, >for the value of this heavenly gift far exceeds that of any fortune on earth. >------------------------------------------------------------------------------ >
