1 /* 2 * procfs-based user access to knfsd statistics 3 * 4 * /proc/net/rpc/nfsd 5 * 6 * Format: 7 * rc <hits> <misses> <nocache> 8 * Statistsics for the reply cache 9 * fh <stale> <total-lookups> <anonlookups> <dir-not-in-dcache> <nondir-not-in-dcache> 10 * statistics for filehandle lookup 11 * io <bytes-read> <bytes-written> 12 * statistics for IO throughput 13 * th <threads> <fullcnt> <10%-20%> <20%-30%> ... <90%-100%> <100%> 14 * time (seconds) when nfsd thread usage above thresholds 15 * and number of times that all threads were in use 16 * ra cache-size <10% <20% <30% ... <100% not-found 17 * number of times that read-ahead entry was found that deep in 18 * the cache. 19 * plus generic RPC stats (see net/sunrpc/stats.c) 20 * 21 * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de> 22 */ 23 24 #include <linux/seq_file.h> 25 #include <linux/module.h> 26 #include <linux/sunrpc/stats.h> 27 #include <linux/nfsd/stats.h> 28 29 #include "nfsd.h" 30 31 struct nfsd_stats nfsdstats; 32 struct svc_stat nfsd_svcstats = { 33 .program = &nfsd_program, 34 }; 35 36 static int nfsd_proc_show(struct seq_file *seq, void *v) 37 { 38 int i; 39 40 seq_printf(seq, "rc %u %u %u\nfh %u %u %u %u %u\nio %u %u\n", 41 nfsdstats.rchits, 42 nfsdstats.rcmisses, 43 nfsdstats.rcnocache, 44 nfsdstats.fh_stale, 45 nfsdstats.fh_lookup, 46 nfsdstats.fh_anon, 47 nfsdstats.fh_nocache_dir, 48 nfsdstats.fh_nocache_nondir, 49 nfsdstats.io_read, 50 nfsdstats.io_write); 51 /* thread usage: */ 52 seq_printf(seq, "th %u %u", nfsdstats.th_cnt, nfsdstats.th_fullcnt); 53 for (i=0; i<10; i++) { 54 unsigned int jifs = nfsdstats.th_usage[i]; 55 unsigned int sec = jifs / HZ, msec = (jifs % HZ)*1000/HZ; 56 seq_printf(seq, " %u.%03u", sec, msec); 57 } 58 59 /* newline and ra-cache */ 60 seq_printf(seq, "\nra %u", nfsdstats.ra_size); 61 for (i=0; i<11; i++) 62 seq_printf(seq, " %u", nfsdstats.ra_depth[i]); 63 seq_putc(seq, '\n'); 64 65 /* show my rpc info */ 66 svc_seq_show(seq, &nfsd_svcstats); 67 68 #ifdef CONFIG_NFSD_V4 69 /* Show count for individual nfsv4 operations */ 70 /* Writing operation numbers 0 1 2 also for maintaining uniformity */ 71 seq_printf(seq,"proc4ops %u", LAST_NFS4_OP + 1); 72 for (i = 0; i <= LAST_NFS4_OP; i++) 73 seq_printf(seq, " %u", nfsdstats.nfs4_opcount[i]); 74 75 seq_putc(seq, '\n'); 76 #endif 77 78 return 0; 79 } 80 81 static int nfsd_proc_open(struct inode *inode, struct file *file) 82 { 83 return single_open(file, nfsd_proc_show, NULL); 84 } 85 86 static const struct file_operations nfsd_proc_fops = { 87 .owner = THIS_MODULE, 88 .open = nfsd_proc_open, 89 .read = seq_read, 90 .llseek = seq_lseek, 91 .release = single_release, 92 }; 93 94 void 95 nfsd_stat_init(void) 96 { 97 svc_proc_register(&nfsd_svcstats, &nfsd_proc_fops); 98 } 99 100 void 101 nfsd_stat_shutdown(void) 102 { 103 svc_proc_unregister("nfsd"); 104 } 105