[net-next-2.6.git] / fs / nfsd / stats.c

/*
 * 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/seq_file.h>
#include <linux/module.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);

#ifdef CONFIG_NFSD_V4
	/* Show count for individual nfsv4 operations */
	/* Writing operation numbers 0 1 2 also for maintaining uniformity */
	seq_printf(seq,"proc4ops %u", LAST_NFS4_OP + 1);
	for (i = 0; i <= LAST_NFS4_OP; i++)
		seq_printf(seq, " %u", nfsdstats.nfs4_opcount[i]);

	seq_putc(seq, '\n');
#endif

	return 0;
}

static int nfsd_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, nfsd_proc_show, NULL);
}

static const 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");
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/fs/nfsd/stats.c
	3	*
	4	* procfs-based user access to knfsd statistics
	5	*
	6	* /proc/net/rpc/nfsd
	7	*
	8	* Format:
	9	* rc <hits> <misses> <nocache>
	10	* Statistsics for the reply cache
	11	* fh <stale> <total-lookups> <anonlookups> <dir-not-in-dcache> <nondir-not-in-dcache>
	12	* statistics for filehandle lookup
	13	* io <bytes-read> <bytes-writtten>
	14	* statistics for IO throughput
	15	* th <threads> <fullcnt> <10%-20%> <20%-30%> ... <90%-100%> <100%>
	16	* time (seconds) when nfsd thread usage above thresholds
	17	* and number of times that all threads were in use
	18	* ra cache-size <10% <20% <30% ... <100% not-found
	19	* number of times that read-ahead entry was found that deep in
	20	* the cache.
	21	* plus generic RPC stats (see net/sunrpc/stats.c)
	22	*
	23	* Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
	24	*/
	25
1da177e4	26	#include <linux/seq_file.h>
1da177e4 LT	27	#include <linux/module.h>
1da177e4 LT	28
1da177e4 LT	29	#include <linux/sunrpc/stats.h>
	30	#include <linux/nfsd/nfsd.h>
	31	#include <linux/nfsd/stats.h>
	32
	33	struct nfsd_stats nfsdstats;
	34	struct svc_stat nfsd_svcstats = {
	35	.program = &nfsd_program,
	36	};
	37
	38	static int nfsd_proc_show(struct seq_file seq, void v)
	39	{
	40	int i;
	41
	42	seq_printf(seq, "rc %u %u %u\nfh %u %u %u %u %u\nio %u %u\n",
	43	nfsdstats.rchits,
	44	nfsdstats.rcmisses,
	45	nfsdstats.rcnocache,
	46	nfsdstats.fh_stale,
	47	nfsdstats.fh_lookup,
	48	nfsdstats.fh_anon,
	49	nfsdstats.fh_nocache_dir,
	50	nfsdstats.fh_nocache_nondir,
	51	nfsdstats.io_read,
	52	nfsdstats.io_write);
	53	/* thread usage: */
	54	seq_printf(seq, "th %u %u", nfsdstats.th_cnt, nfsdstats.th_fullcnt);
	55	for (i=0; i<10; i++) {
	56	unsigned int jifs = nfsdstats.th_usage[i];
	57	unsigned int sec = jifs / HZ, msec = (jifs % HZ)*1000/HZ;
	58	seq_printf(seq, " %u.%03u", sec, msec);
	59	}
	60
	61	/* newline and ra-cache */
	62	seq_printf(seq, "\nra %u", nfsdstats.ra_size);
	63	for (i=0; i<11; i++)
	64	seq_printf(seq, " %u", nfsdstats.ra_depth[i]);
	65	seq_putc(seq, '\n');
	66
	67	/* show my rpc info */
	68	svc_seq_show(seq, &nfsd_svcstats);
	69
e2b20950 SA	70	#ifdef CONFIG_NFSD_V4
	71	/* Show count for individual nfsv4 operations */
	72	/* Writing operation numbers 0 1 2 also for maintaining uniformity */
	73	seq_printf(seq,"proc4ops %u", LAST_NFS4_OP + 1);
	74	for (i = 0; i <= LAST_NFS4_OP; i++)
	75	seq_printf(seq, " %u", nfsdstats.nfs4_opcount[i]);
	76
	77	seq_putc(seq, '\n');
	78	#endif
	79
1da177e4 LT	80	return 0;
	81	}
	82
	83	static int nfsd_proc_open(struct inode inode, struct file file)
	84	{
	85	return single_open(file, nfsd_proc_show, NULL);
	86	}
	87
4b6f5d20	88	static const struct file_operations nfsd_proc_fops = {
1da177e4 LT	89	.owner = THIS_MODULE,
	90	.open = nfsd_proc_open,
	91	.read = seq_read,
	92	.llseek = seq_lseek,
	93	.release = single_release,
	94	};
	95
	96	void
	97	nfsd_stat_init(void)
	98	{
	99	svc_proc_register(&nfsd_svcstats, &nfsd_proc_fops);
	100	}
	101
	102	void
	103	nfsd_stat_shutdown(void)
	104	{
	105	svc_proc_unregister("nfsd");
	106	}