diff options
Diffstat (limited to 'fs/nfsd/stats.c')
-rw-r--r-- | fs/nfsd/stats.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/fs/nfsd/stats.c b/fs/nfsd/stats.c new file mode 100644 index 0000000..1cf955b --- /dev/null +++ b/fs/nfsd/stats.c @@ -0,0 +1,101 @@ +/* + * linux/fs/nfsd/stats.c + * + * procfs-based user access to knfsd statistics + * + * /proc/net/rpc/nfsd + * + * Format: + * rc <hits> <misses> <nocache> + * Statistsics for the reply cache + * fh <stale> <total-lookups> <anonlookups> <dir-not-in-dcache> <nondir-not-in-dcache> + * statistics for filehandle lookup + * io <bytes-read> <bytes-writtten> + * statistics for IO throughput + * th <threads> <fullcnt> <10%-20%> <20%-30%> ... <90%-100%> <100%> + * time (seconds) when nfsd thread usage above thresholds + * and number of times that all threads were in use + * ra cache-size <10% <20% <30% ... <100% not-found + * number of times that read-ahead entry was found that deep in + * the cache. + * plus generic RPC stats (see net/sunrpc/stats.c) + * + * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de> + */ + +#include <linux/kernel.h> +#include <linux/time.h> +#include <linux/proc_fs.h> +#include <linux/seq_file.h> +#include <linux/stat.h> +#include <linux/module.h> + +#include <linux/sunrpc/svc.h> +#include <linux/sunrpc/stats.h> +#include <linux/nfsd/nfsd.h> +#include <linux/nfsd/stats.h> + +struct nfsd_stats nfsdstats; +struct svc_stat nfsd_svcstats = { + .program = &nfsd_program, +}; + +static int nfsd_proc_show(struct seq_file *seq, void *v) +{ + int i; + + seq_printf(seq, "rc %u %u %u\nfh %u %u %u %u %u\nio %u %u\n", + nfsdstats.rchits, + nfsdstats.rcmisses, + nfsdstats.rcnocache, + nfsdstats.fh_stale, + nfsdstats.fh_lookup, + nfsdstats.fh_anon, + nfsdstats.fh_nocache_dir, + nfsdstats.fh_nocache_nondir, + nfsdstats.io_read, + nfsdstats.io_write); + /* thread usage: */ + seq_printf(seq, "th %u %u", nfsdstats.th_cnt, nfsdstats.th_fullcnt); + for (i=0; i<10; i++) { + unsigned int jifs = nfsdstats.th_usage[i]; + unsigned int sec = jifs / HZ, msec = (jifs % HZ)*1000/HZ; + seq_printf(seq, " %u.%03u", sec, msec); + } + + /* newline and ra-cache */ + seq_printf(seq, "\nra %u", nfsdstats.ra_size); + for (i=0; i<11; i++) + seq_printf(seq, " %u", nfsdstats.ra_depth[i]); + seq_putc(seq, '\n'); + + /* show my rpc info */ + svc_seq_show(seq, &nfsd_svcstats); + + return 0; +} + +static int nfsd_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, nfsd_proc_show, NULL); +} + +static struct file_operations nfsd_proc_fops = { + .owner = THIS_MODULE, + .open = nfsd_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +void +nfsd_stat_init(void) +{ + svc_proc_register(&nfsd_svcstats, &nfsd_proc_fops); +} + +void +nfsd_stat_shutdown(void) +{ + svc_proc_unregister("nfsd"); +} |