On 09/22/2014 08:44 AM, Marko Myllynen wrote:
> From 7a5072efd524f5537a0b38808420bea8c0e45b01 Mon Sep 17 00:00:00 2001
> From: Marko Myllynen <myllynen@xxxxxxxxxx>
> Date: Mon, 22 Sep 2014 15:31:04 +0300
> Subject: [PATCH v2] nfsstat: add server ra cache stats
>
> Add server read ahead cache statistics to nfsstat.
>
> Signed-off-by: Marko Myllynen <myllynen@xxxxxxxxxx>
Committed....
steved.
> ---
> utils/nfsstat/nfsstat.c | 29 +++++++++++++++++++++++++----
> 1 files changed, 25 insertions(+), 4 deletions(-)
>
> diff --git a/utils/nfsstat/nfsstat.c b/utils/nfsstat/nfsstat.c
> index 83bde9d..8e165a8 100644
> --- a/utils/nfsstat/nfsstat.c
> +++ b/utils/nfsstat/nfsstat.c
> @@ -96,6 +96,11 @@ static unsigned int srvioinfo[3], srvioinfo_old[3]; /* 0 bytes read
> * 1 bytes written
> */
>
> +static unsigned int srvrainfo[13], srvrainfo_old[13]; /* 0 ra cache size
> + * 1..11 depth of ra cache hit
> + * 12 ra cache misses
> + */
> +
> static const char * nfsv2name[SRVPROC2_SZ] = {
> "null", "getattr", "setattr", "root", "lookup", "readlink",
> "read", "wrcache", "write", "create", "remove", "rename",
> @@ -172,6 +177,7 @@ static const char * nfssrvproc4opname[SRVPROC4OPS_SZ] = {
> #define LABEL_srvrc "Server reply cache:\n"
> #define LABEL_srvfh "Server file handle cache:\n"
> #define LABEL_srvio "Server io stats:\n"
> +#define LABEL_srvra "Server read ahead cache:\n"
> #define LABEL_srvproc2 "Server nfs v2:\n"
> #define LABEL_srvproc3 "Server nfs v3:\n"
> #define LABEL_srvproc4 "Server nfs v4:\n"
> @@ -204,6 +210,7 @@ typedef struct statinfo {
> SRV(rc,s), \
> SRV(fh,s), \
> SRV(io,s), \
> + SRV(ra,s), \
> SRV(proc2,s), \
> SRV(proc3,s),\
> SRV(proc4,s), \
> @@ -256,6 +263,7 @@ static time_t starttime;
> #define PRNT_FH 0x0008
> #define PRNT_RC 0x0010
> #define PRNT_IO 0x0020
> +#define PRNT_RA 0x0040
> #define PRNT_AUTO 0x1000
> #define PRNT_V2 0x2000
> #define PRNT_V3 0x4000
> @@ -283,8 +291,9 @@ void usage(char *name)
> rpc General RPC information\n\
> net Network layer statistics\n\
> fh Usage information on the server's file handle cache\n\
> - rc Usage information on the server's request reply cache\n\
> io Usage information on the server's io statistics\n\
> + ra Usage information on the server's read ahead cache\n\
> + rc Usage information on the server's request reply cache\n\
> all Select all of the above\n\
> -v, --verbose, --all Same as '-o all'\n\
> -r, --rpc Show RPC statistics\n\
> @@ -376,8 +385,10 @@ main(int argc, char **argv)
> opt_prt |= PRNT_FH;
> else if (!strcmp(optarg, "io"))
> opt_prt |= PRNT_IO;
> + else if (!strcmp(optarg, "ra"))
> + opt_prt |= PRNT_RA;
> else if (!strcmp(optarg, "all"))
> - opt_prt |= PRNT_CALLS | PRNT_RPC | PRNT_NET | PRNT_RC | PRNT_FH | PRNT_IO;
> + opt_prt |= PRNT_CALLS | PRNT_RPC | PRNT_NET | PRNT_RC | PRNT_FH | PRNT_IO | PRNT_RA;
> else {
> fprintf(stderr, "nfsstat: unknown category: "
> "%s\n", optarg);
> @@ -445,9 +456,9 @@ main(int argc, char **argv)
> if (!(opt_prt & 0xe000)) {
> opt_prt |= PRNT_AUTO;
> }
> - if ((opt_prt & (PRNT_FH|PRNT_RC|PRNT_IO)) && !opt_srv) {
> + if ((opt_prt & (PRNT_FH|PRNT_RC|PRNT_IO|PRNT_RA)) && !opt_srv) {
> fprintf(stderr,
> - "You requested io, file handle, or request cache "
> + "You requested fh/io/ra/rc "
> "statistics while using the -c option.\n"
> "This information is available only for the NFS "
> "server.\n");
> @@ -572,6 +583,16 @@ print_server_stats(int opt_prt)
> printf("\n");
> }
> }
> + if (opt_prt & PRNT_RA) {
> + if (opt_sleep && !has_rpcstats(srvrainfo, 3)) {
> + ;
> + } else {
> + print_numbers(LABEL_srvra
> + "size 0-10% 10-20% 20-30% 30-40% 40-50% 50-60% 60-70% 70-80% 80-90% 90-100% notfound\n",
> + srvrainfo, 12);
> + printf("\n");
> + }
> + }
>
> /*
> * 2.2 puts all fh-related info after the 'rc' header
>
--
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