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MINOR: cache: report the number of cache lookups and cache hits

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The cache lookups and hits is now accounted per frontend and per backend,
and reported on the stats page.
This commit is contained in:
Willy Tarreau 2018-12-14 14:00:25 +01:00
parent 59caa3b872
commit a1214a501f
4 changed files with 34 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/types/counters.h
View File

@ -56,6 +56,8 @@ struct fe_counters {
long long comp_rsp; /* number of compressed responses */
unsigned int rps_max; /* maximum of new HTTP requests second observed */
long long rsp[6]; /* http response codes */
long long cache_lookups;/* cache lookups */
long long cache_hits; /* cache hits */
} http;
} p; /* protocol-specific stats */
};
@ -105,6 +107,8 @@ struct be_counters {
long long comp_rsp; /* number of compressed responses */
unsigned int rps_max; /* maximum of new HTTP requests second observed */
long long rsp[6]; /* http response codes */
long long cache_lookups;/* cache lookups */
long long cache_hits; /* cache hits */
} http;
} p; /* protocol-specific stats */
};

2
include/types/stats.h
View File

@ -394,6 +394,8 @@ enum stat_field {
ST_F_WREW,
ST_F_CONNECT,
ST_F_REUSE,
ST_F_CACHE_LOOKUPS,
ST_F_CACHE_HITS,
/* must always be the last one */
ST_F_TOTAL_FIELDS

10
src/cache.c
View File

@ -1389,6 +1389,11 @@ enum act_return http_action_req_cache_use(struct act_rule *rule, struct proxy *p
if (s->txn->flags & TX_CACHE_IGNORE)
return ACT_RET_CONT;
if (px == strm_fe(s))
HA_ATOMIC_ADD(&px->fe_counters.p.http.cache_lookups, 1);
else
HA_ATOMIC_ADD(&px->be_counters.p.http.cache_lookups, 1);
shctx_lock(shctx_ptr(cache));
res = entry_exist(cache, s->txn->cache_hash);
if (res) {
@ -1402,6 +1407,11 @@ enum act_return http_action_req_cache_use(struct act_rule *rule, struct proxy *p
appctx->ctx.cache.entry = res;
appctx->ctx.cache.next = NULL;
appctx->ctx.cache.sent = 0;
if (px == strm_fe(s))
HA_ATOMIC_ADD(&px->fe_counters.p.http.cache_hits, 1);
else
HA_ATOMIC_ADD(&px->be_counters.p.http.cache_hits, 1);
return ACT_RET_CONT;
} else {
shctx_lock(shctx_ptr(cache));

18
src/stats.c
View File

@ -230,6 +230,8 @@ const char *stat_field_names[ST_F_TOTAL_FIELDS] = {
[ST_F_WREW] = "wrew",
[ST_F_CONNECT] = "connect",
[ST_F_REUSE] = "reuse",
[ST_F_CACHE_LOOKUPS] = "cache_lookups",
[ST_F_CACHE_HITS] = "cache_hits",
};
/* one line of info */
@ -724,6 +726,8 @@ static int stats_dump_fields_html(struct buffer *out,
"<tr><th>- HTTP 5xx responses:</th><td>%s</td></tr>"
"<tr><th>- other responses:</th><td>%s</td></tr>"
"<tr><th>Intercepted requests:</th><td>%s</td></tr>"
"<tr><th>Cache lookups:</th><td>%s</td></tr>"
"<tr><th>Cache hits:</th><td>%s</td><td>(%d%%)</td></tr>"
"<tr><th>Failed hdr rewrites:</th><td>%s</td></tr>"
"",
U2H(stats[ST_F_REQ_TOT].u.u64),
@ -737,6 +741,10 @@ static int stats_dump_fields_html(struct buffer *out,
U2H(stats[ST_F_HRSP_5XX].u.u64),
U2H(stats[ST_F_HRSP_OTHER].u.u64),
U2H(stats[ST_F_INTERCEPTED].u.u64),
U2H(stats[ST_F_CACHE_LOOKUPS].u.u64),
U2H(stats[ST_F_CACHE_HITS].u.u64),
stats[ST_F_CACHE_LOOKUPS].u.u64 ?
(int)(100 * stats[ST_F_CACHE_HITS].u.u64 / stats[ST_F_CACHE_LOOKUPS].u.u64) : 0,
U2H(stats[ST_F_WREW].u.u64));
}
@ -1198,6 +1206,8 @@ static int stats_dump_fields_html(struct buffer *out,
"<tr><th>- HTTP 4xx responses:</th><td>%s</td></tr>"
"<tr><th>- HTTP 5xx responses:</th><td>%s</td></tr>"
"<tr><th>- other responses:</th><td>%s</td></tr>"
"<tr><th>Cache lookups:</th><td>%s</td></tr>"
"<tr><th>Cache hits:</th><td>%s</td><td>(%d%%)</td></tr>"
"<tr><th>Failed hdr rewrites:</th><td>%s</td></tr>"
"<tr><th colspan=3>Avg over last 1024 success. conn.</th></tr>"
"",
@ -1215,6 +1225,10 @@ static int stats_dump_fields_html(struct buffer *out,
U2H(stats[ST_F_HRSP_4XX].u.u64),
U2H(stats[ST_F_HRSP_5XX].u.u64),
U2H(stats[ST_F_HRSP_OTHER].u.u64),
U2H(stats[ST_F_CACHE_LOOKUPS].u.u64),
U2H(stats[ST_F_CACHE_HITS].u.u64),
stats[ST_F_CACHE_LOOKUPS].u.u64 ?
(int)(100 * stats[ST_F_CACHE_HITS].u.u64 / stats[ST_F_CACHE_LOOKUPS].u.u64) : 0,
U2H(stats[ST_F_WREW].u.u64));
}
@ -1363,6 +1377,8 @@ int stats_fill_fe_stats(struct proxy *px, struct field *stats, int len)
stats[ST_F_HRSP_5XX] = mkf_u64(FN_COUNTER, px->fe_counters.p.http.rsp[5]);
stats[ST_F_HRSP_OTHER] = mkf_u64(FN_COUNTER, px->fe_counters.p.http.rsp[0]);
stats[ST_F_INTERCEPTED] = mkf_u64(FN_COUNTER, px->fe_counters.intercepted_req);
stats[ST_F_CACHE_LOOKUPS] = mkf_u64(FN_COUNTER, px->fe_counters.p.http.cache_lookups);
stats[ST_F_CACHE_HITS] = mkf_u64(FN_COUNTER, px->fe_counters.p.http.cache_hits);
}
/* requests : req_rate, req_rate_max, req_tot, */
@ -1839,6 +1855,8 @@ int stats_fill_be_stats(struct proxy *px, int flags, struct field *stats, int le
stats[ST_F_HRSP_4XX] = mkf_u64(FN_COUNTER, px->be_counters.p.http.rsp[4]);
stats[ST_F_HRSP_5XX] = mkf_u64(FN_COUNTER, px->be_counters.p.http.rsp[5]);
stats[ST_F_HRSP_OTHER] = mkf_u64(FN_COUNTER, px->be_counters.p.http.rsp[0]);
stats[ST_F_CACHE_LOOKUPS] = mkf_u64(FN_COUNTER, px->be_counters.p.http.cache_lookups);
stats[ST_F_CACHE_HITS] = mkf_u64(FN_COUNTER, px->be_counters.p.http.cache_hits);
}
stats[ST_F_CLI_ABRT] = mkf_u64(FN_COUNTER, px->be_counters.cli_aborts);