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Refer to the exhibits below. On an NFS server, \"netstat -m\" is run once and then again 15 minutes later. An extract of the output for both times is shown in the exhibits. Using the netstat outputs, which of the following conclusions is most appropriate to draw? \r\nA The number of biod(s) processes should be increased. \r\nB The number of nfsd(s) processes should be increased. \r\nC The machine needs more physical memory. \r\nD The machine needs more memory allocated for mbufs. \r\n\r\n# date \r\n\r\nMon Jun 12 20:05:54 CDT 1995 \r\n\r\n# netstat -m \r\n\r\n1385 mbufs in use: \r\n\r\n96 mbuf cluster pages in use \r\n\r\n2170 Kbytes allocated to mbufs \r\n\r\n841 requests for mbufs denied \r\n\r\n0 calls to protocol drain routines \r\n\r\nby size insue calls failed free hiwat freed \r\n32 301 2787 0 211 640 0\r\n64 41 318 0 23 320 0\r\n128 117 1814 0 43 160 0\r\n256 138 6391162 0 22 384 0\r\n512 20 1112 0 20 40 0\r\n1024 2 77 0 2 20 0\r\n2048 0 33 0 2 10 0\r\n4096 96 335617 841 11 120 0\r\n16384 1 1 0 12 24 7\r\n\r\n# date \r\n\r\nMon Jun 12 20:20:04 CDT 1995 \r\n\r\n# netstat -m \r\n\r\n1389 mbufs in use: \r\n\r\n97 mbuf cluster pages in use \r\n\r\n2180 Kbytes allocated to mbufs \r\n\r\n982 requests for mbufs denied \r\n\r\n0 calls to protocol drain routines \r\nby size insue calls failed free hiwat freed \r\n32 301 2787 0 211 640 0\r\n64 41 318 0 23 320 0\r\n128 117 1814 0 43 160 0\r\n256 138 6391162 0 22 384 0\r\n512 20 1112 0 20 40 0\r\n1024 2 77 0 2 20 0\r\n2048 0 33 0 2 10 0\r\n4096 97 33810 982 11 120 0\r\n16384 1 1 0 12 24 7\r\n\r\n\r\nKernel malloc statistics: \r\n答案选择D ,我不太明白, netstat -m 命令的输出谁给解释一下 |
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