> From: James Washer <washer@xxxxxxxx> > To: Crash-utility@xxxxxxxxxx > Subject: Crash dump of RHEL5, what does "SHARED" > memory represent in kmem -i output? > Message-ID: <E06C76EC-884A-4C02-9566-D647E0B575CA@xxxxxxxx> > Content-Type: text/plain; charset=us-ascii > > In the data below, what memory usage is reported as SHARED? Does this > imply SysV shared memory, or pages shared between processes, or something > else all together? > > > kmem-i > > PAGES TOTAL PERCENTAGE > TOTAL MEM 9228936 35.2 GB ---- > FREE 20260 79.1 MB 0% of TOTAL MEM > USED 9208676 35.1 GB 99% of TOTAL MEM > SHARED 9051322 34.5 GB 98% of TOTAL MEM > BUFFERS 151 604 KB 0% of TOTAL MEM > CACHED 2455 9.6 MB 0% of TOTAL MEM > SLAB 27419 107.1 MB 0% of TOTAL MEM > > TOTAL HIGH 0 0 0% of TOTAL MEM > FREE HIGH 0 0 0% of TOTAL HIGH > TOTAL LOW 9228936 35.2 GB 100% of TOTAL MEM > FREE LOW 20260 79.1 MB 0% of TOTAL LOW > > TOTAL SWAP 4194302 16 GB ---- > SWAP USED 2294571 8.8 GB 54% of TOTAL SWAP > SWAP FREE 1899731 7.2 GB 45% of TOTAL SWAP > > > > - jim Hi Jim, Purportedly it displays -- as the comment states: /* * Get shared pages from dump_mem_map(). Note that this is done * differently than the kernel -- it just tallies the non-reserved * pages that have a count of greater than 1. */ It has a check in there for the different usage of page->count, where in certain kernel versions, -1 means 0. Dave Anderson (on vacation) -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
