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https://github.com/xen-project/xen.git
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Dan Magenheimer
b46c24edb7
The program xen-tmem-list-parse parses the output of xm/xl tmem-list into human-readable format. A missing NULL terminator sometimes causes garbage to be spewed where the two-letter pool type should be output. Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
340 lines
12 KiB
C
340 lines
12 KiB
C
/*
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* Parse output from tmem-list and reformat to human-readable
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*
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* NOTE: NEVER delete a parse call as this file documents backwards
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* compatibility for older versions of tmem-list and we don't want to
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* accidentally reuse an old tag
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*
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* Copyright (c) 2009, Dan Magenheimer, Oracle Corp.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#define BUFSIZE 4096
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#define PAGE_SIZE 4096
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unsigned long long parse(char *s,char *match)
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{
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char *s1 = strstr(s,match);
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unsigned long long ret;
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if ( s1 == NULL )
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return 0LL;
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s1 += 2;
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if ( *s1++ != ':' )
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return 0LL;
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sscanf(s1,"%llu",&ret);
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return ret;
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}
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unsigned long long parse_hex(char *s,char *match)
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{
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char *s1 = strstr(s,match);
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unsigned long long ret;
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if ( s1 == NULL )
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return 0LL;
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s1 += 2;
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if ( *s1++ != ':' )
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return 0LL;
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sscanf(s1,"%llx",&ret);
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return ret;
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}
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unsigned long long parse2(char *s,char *match1, char *match2)
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{
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char match[3];
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match[0] = *match1;
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match[1] = *match2;
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match[2] = '\0';
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return parse(s,match);
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}
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void parse_string(char *s,char *match, char *buf, int len)
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{
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char *s1 = strstr(s,match);
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int i;
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if ( s1 == NULL )
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return;
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s1 += 2;
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if ( *s1++ != ':' )
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return;
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for ( i = 0; i < len; i++ )
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*buf++ = *s1++;
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}
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void parse_sharers(char *s, char *match, char *buf, int len)
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{
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char *s1 = strstr(s,match);
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char *b = buf;
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if ( s1 == NULL )
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return;
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while ( s1 )
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{
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s1 += 2;
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if (*s1++ != ':')
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return;
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while (*s1 >= '0' && *s1 <= '9')
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*b++ = *s1++;
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*b++ = ',';
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s1 = strstr(s1,match);
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}
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if ( b != buf )
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*--b = '\0';
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}
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void parse_global(char *s)
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{
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unsigned long long total_ops = parse(s,"Tt");
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unsigned long long errored_ops = parse(s,"Te");
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unsigned long long failed_copies = parse(s,"Cf");
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unsigned long long alloc_failed = parse(s,"Af");
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unsigned long long alloc_page_failed = parse(s,"Pf");
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unsigned long long avail_pages = parse(s,"Ta");
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unsigned long long low_on_memory = parse(s,"Lm");
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unsigned long long evicted_pgs = parse(s,"Et");
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unsigned long long evict_attempts = parse(s,"Ea");
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unsigned long long relinq_pgs = parse(s,"Rt");
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unsigned long long relinq_attempts = parse(s,"Ra");
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unsigned long long max_evicts_per_relinq = parse(s,"Rx");
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unsigned long long total_flush_pool = parse(s,"Fp");
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unsigned long long global_eph_count = parse(s,"Ec");
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unsigned long long global_eph_max = parse(s,"Em");
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unsigned long long obj_count = parse(s,"Oc");
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unsigned long long obj_max = parse(s,"Om");
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unsigned long long rtree_node_count = parse(s,"Nc");
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unsigned long long rtree_node_max = parse(s,"Nm");
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unsigned long long pgp_count = parse(s,"Pc");
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unsigned long long pgp_max = parse(s,"Pm");
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unsigned long long page_count = parse(s,"Fc");
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unsigned long long max_page_count = parse(s,"Fm");
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unsigned long long pcd_count = parse(s,"Sc");
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unsigned long long max_pcd_count = parse(s,"Sm");
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unsigned long long pcd_tot_tze_size = parse(s,"Zt");
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unsigned long long pcd_tot_csize = parse(s,"Gz");
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unsigned long long deduped_puts = parse(s,"Gd");
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unsigned long long tot_good_eph_puts = parse(s,"Ep");
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printf("total tmem ops=%llu (errors=%llu) -- tmem pages avail=%llu\n",
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total_ops, errored_ops, avail_pages);
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printf("datastructs: objs=%llu (max=%llu) pgps=%llu (max=%llu) "
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"nodes=%llu (max=%llu) pages=%llu (max=%llu) ",
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obj_count, obj_max, pgp_count, pgp_max,
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rtree_node_count, rtree_node_max,
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page_count,max_page_count);
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if (max_pcd_count != 0 && global_eph_count != 0 && tot_good_eph_puts != 0) {
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printf("pcds=%llu (max=%llu) ",
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pcd_count,max_pcd_count);
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printf("deduped: avg=%4.2f%% (curr=%4.2f%%) ",
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((deduped_puts*1.0)/tot_good_eph_puts)*100,
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(1.0-(pcd_count*1.0)/global_eph_count)*100);
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}
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if (pcd_count != 0)
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{
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if (pcd_tot_tze_size && (pcd_tot_tze_size < pcd_count*PAGE_SIZE))
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printf("tze savings=%4.2f%% ",
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(1.0-(pcd_tot_tze_size*1.0)/(pcd_count*PAGE_SIZE))*100);
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if (pcd_tot_csize && (pcd_tot_csize < pcd_count*PAGE_SIZE))
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printf("compression savings=%4.2f%% ",
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(1.0-(pcd_tot_csize*1.0)/(pcd_count*PAGE_SIZE))*100);
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}
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printf("\n");
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printf("misc: failed_copies=%llu alloc_failed=%llu alloc_page_failed=%llu "
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"low_mem=%llu evicted=%llu/%llu relinq=%llu/%llu, "
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"max_evicts_per_relinq=%llu, flush_pools=%llu, "
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"eph_count=%llu, eph_max=%llu\n",
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failed_copies, alloc_failed, alloc_page_failed, low_on_memory,
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evicted_pgs, evict_attempts, relinq_pgs, relinq_attempts,
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max_evicts_per_relinq, total_flush_pool,
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global_eph_count, global_eph_max);
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}
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#define PARSE_CYC_COUNTER(s,x,prefix) unsigned long long \
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x##_count = parse2(s,prefix,"n"), \
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x##_sum_cycles = parse2(s,prefix,"t"), \
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x##_max_cycles = parse2(s,prefix,"x"), \
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x##_min_cycles = parse2(s,prefix,"m")
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#define PRINTF_CYC_COUNTER(x,text) \
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if (x##_count) printf(text" avg=%llu, max=%llu, " \
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"min=%llu, samples=%llu\n", \
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x##_sum_cycles ? (x##_sum_cycles/x##_count) : 0, \
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x##_max_cycles, x##_min_cycles, x##_count)
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void parse_time_stats(char *s)
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{
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PARSE_CYC_COUNTER(s,succ_get,"G");
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PARSE_CYC_COUNTER(s,succ_put,"P");
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PARSE_CYC_COUNTER(s,non_succ_get,"g");
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PARSE_CYC_COUNTER(s,non_succ_put,"p");
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PARSE_CYC_COUNTER(s,flush,"F");
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PARSE_CYC_COUNTER(s,flush_obj,"O");
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PARSE_CYC_COUNTER(s,pg_copy,"C");
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PARSE_CYC_COUNTER(s,compress,"c");
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PARSE_CYC_COUNTER(s,decompress,"d");
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PRINTF_CYC_COUNTER(succ_get,"succ get cycles:");
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PRINTF_CYC_COUNTER(succ_put,"succ put cycles:");
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PRINTF_CYC_COUNTER(non_succ_get,"failed get cycles:");
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PRINTF_CYC_COUNTER(non_succ_put,"failed put cycles:");
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PRINTF_CYC_COUNTER(flush,"flush cycles:");
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PRINTF_CYC_COUNTER(flush_obj,"flush_obj cycles:");
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PRINTF_CYC_COUNTER(pg_copy,"page copy cycles:");
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PRINTF_CYC_COUNTER(compress,"compression cycles:");
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PRINTF_CYC_COUNTER(decompress,"decompression cycles:");
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}
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void parse_client(char *s)
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{
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unsigned long cli_id = parse(s,"CI");
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unsigned long weight = parse(s,"ww");
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unsigned long cap = parse(s,"ca");
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unsigned long compress = parse(s,"co");
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unsigned long frozen = parse(s,"fr");
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unsigned long long eph_count = parse(s,"Ec");
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unsigned long long max_eph_count = parse(s,"Em");
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unsigned long long compressed_pages = parse(s,"cp");
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unsigned long long compressed_sum_size = parse(s,"cb");
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unsigned long long compress_poor = parse(s,"cn");
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unsigned long long compress_nomem = parse(s,"cm");
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unsigned long long total_cycles = parse(s,"Tc");
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unsigned long long succ_eph_gets = parse(s,"Ge");
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unsigned long long succ_pers_puts = parse(s,"Pp");
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unsigned long long succ_pers_gets = parse(s,"Gp");
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printf("domid%lu: weight=%lu,cap=%lu,compress=%d,frozen=%d,"
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"total_cycles=%llu,succ_eph_gets=%llu,"
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"succ_pers_puts=%llu,succ_pers_gets=%llu,"
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"eph_count=%llu,max_eph=%llu,"
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"compression ratio=%lu%% (samples=%llu,poor=%llu,nomem=%llu)\n",
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cli_id, weight, cap, compress?1:0, frozen?1:0,
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total_cycles, succ_eph_gets, succ_pers_puts, succ_pers_gets,
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eph_count, max_eph_count,
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compressed_pages ? (long)((compressed_sum_size*100LL) /
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(compressed_pages*PAGE_SIZE)) : 0,
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compressed_pages, compress_poor, compress_nomem);
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}
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void parse_pool(char *s)
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{
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char pool_type[3];
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unsigned long cli_id = parse(s,"CI");
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unsigned long pool_id = parse(s,"PI");
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unsigned long long pgp_count = parse(s,"Pc");
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unsigned long long max_pgp_count = parse(s,"Pm");
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unsigned long long obj_count = parse(s,"Oc");
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unsigned long long max_obj_count = parse(s,"Om");
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unsigned long long objnode_count = parse(s,"Nc");
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unsigned long long max_objnode_count = parse(s,"Nm");
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unsigned long long good_puts = parse(s,"ps");
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unsigned long long puts = parse(s,"pt");
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unsigned long long no_mem_puts = parse(s,"px");
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unsigned long long dup_puts_flushed = parse(s,"pd");
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unsigned long long dup_puts_replaced = parse(s,"pr");
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unsigned long long found_gets = parse(s,"gs");
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unsigned long long gets = parse(s,"gt");
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unsigned long long flushs_found = parse(s,"fs");
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unsigned long long flushs = parse(s,"ft");
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unsigned long long flush_objs_found = parse(s,"os");
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unsigned long long flush_objs = parse(s,"ot");
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parse_string(s,"PT",pool_type,2);
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pool_type[2] = '\0';
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if (pool_type[1] == 'S')
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return; /* no need to repeat print data for shared pools */
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printf("domid%lu,id%lu[%s]:pgp=%llu(max=%llu) obj=%llu(%llu) "
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"objnode=%llu(%llu) puts=%llu/%llu/%llu(dup=%llu/%llu) "
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"gets=%llu/%llu(%llu%%) "
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"flush=%llu/%llu flobj=%llu/%llu\n",
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cli_id, pool_id, pool_type,
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pgp_count, max_pgp_count, obj_count, max_obj_count,
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objnode_count, max_objnode_count,
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good_puts, puts, no_mem_puts,
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dup_puts_flushed, dup_puts_replaced,
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found_gets, gets,
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gets ? (found_gets*100LL)/gets : 0,
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flushs_found, flushs, flush_objs_found, flush_objs);
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}
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void parse_shared_pool(char *s)
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{
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char pool_type[3];
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char buf[BUFSIZE];
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unsigned long pool_id = parse(s,"PI");
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unsigned long long uid0 = parse_hex(s,"U0");
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unsigned long long uid1 = parse_hex(s,"U1");
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unsigned long long pgp_count = parse(s,"Pc");
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unsigned long long max_pgp_count = parse(s,"Pm");
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unsigned long long obj_count = parse(s,"Oc");
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unsigned long long max_obj_count = parse(s,"Om");
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unsigned long long objnode_count = parse(s,"Nc");
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unsigned long long max_objnode_count = parse(s,"Nm");
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unsigned long long good_puts = parse(s,"ps");
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unsigned long long puts = parse(s,"pt");
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unsigned long long no_mem_puts = parse(s,"px");
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unsigned long long dup_puts_flushed = parse(s,"pd");
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unsigned long long dup_puts_replaced = parse(s,"pr");
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unsigned long long found_gets = parse(s,"gs");
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unsigned long long gets = parse(s,"gt");
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unsigned long long flushs_found = parse(s,"fs");
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unsigned long long flushs = parse(s,"ft");
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unsigned long long flush_objs_found = parse(s,"os");
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unsigned long long flush_objs = parse(s,"ot");
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parse_string(s,"PT",pool_type,2);
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pool_type[2] = '\0';
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parse_sharers(s,"SC",buf,BUFSIZE);
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printf("poolid=%lu[%s] uuid=%llx.%llx, shared-by:%s: "
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"pgp=%llu(max=%llu) obj=%llu(%llu) "
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"objnode=%llu(%llu) puts=%llu/%llu/%llu(dup=%llu/%llu) "
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"gets=%llu/%llu(%llu%%) "
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"flush=%llu/%llu flobj=%llu/%llu\n",
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pool_id, pool_type, uid0, uid1, buf,
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pgp_count, max_pgp_count, obj_count, max_obj_count,
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objnode_count, max_objnode_count,
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good_puts, puts, no_mem_puts,
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dup_puts_flushed, dup_puts_replaced,
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found_gets, gets,
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gets ? (found_gets*100LL)/gets : 0,
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flushs_found, flushs, flush_objs_found, flush_objs);
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}
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int main(int ac, char **av)
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{
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char *p, c;
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char buf[BUFSIZE];
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while ( (p = fgets(buf,BUFSIZE,stdin)) != NULL )
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{
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c = *p++;
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if ( *p++ != '=' )
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continue;
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switch ( c )
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{
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case 'G':
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parse_global(p);
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break;
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case 'T':
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parse_time_stats(p);
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break;
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case 'C':
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parse_client(p);
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break;
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case 'P':
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parse_pool(p);
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break;
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case 'S':
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parse_shared_pool(p);
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break;
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default:
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continue;
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}
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}
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return 0;
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}
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