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Merge branch 'improve-stats' of https://github.com/cleverca22/nix

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Eelco Dolstra 2018-09-05 21:28:05 +02:00
parent 2d91012754 4b034f390c
commit c4ba5f4be9
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1 changed files with 63 additions and 26 deletions
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89
src/libexpr/eval.cc
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@ -6,12 +6,15 @@
#include "globals.hh"
#include "eval-inline.hh"
#include "download.hh"
#include "json.hh"
#include <algorithm>
#include <cstring>
#include <unistd.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <iostream>
#include <fstream>
#include <sys/time.h>
#include <sys/resource.h>
@ -23,6 +26,7 @@
#endif
using std::cout;
namespace nix {
@ -1723,12 +1727,10 @@ bool EvalState::eqValues(Value & v1, Value & v2)
}
}
void EvalState::printStats()
{
bool showStats = getEnv("NIX_SHOW_STATS", "0") != "0";
Verbosity v = showStats ? lvlInfo : lvlDebug;
printMsg(v, "evaluation statistics:");
struct rusage buf;
getrusage(RUSAGE_SELF, &buf);
@ -1739,34 +1741,69 @@ void EvalState::printStats()
uint64_t bValues = nrValues * sizeof(Value);
uint64_t bAttrsets = nrAttrsets * sizeof(Bindings) + nrAttrsInAttrsets * sizeof(Attr);
printMsg(v, format(" time elapsed: %1%") % cpuTime);
printMsg(v, format(" size of a value: %1%") % sizeof(Value));
printMsg(v, format(" size of an attr: %1%") % sizeof(Attr));
printMsg(v, format(" environments allocated count: %1%") % nrEnvs);
printMsg(v, format(" environments allocated bytes: %1%") % bEnvs);
printMsg(v, format(" list elements count: %1%") % nrListElems);
printMsg(v, format(" list elements bytes: %1%") % bLists);
printMsg(v, format(" list concatenations: %1%") % nrListConcats);
printMsg(v, format(" values allocated count: %1%") % nrValues);
printMsg(v, format(" values allocated bytes: %1%") % bValues);
printMsg(v, format(" sets allocated: %1% (%2% bytes)") % nrAttrsets % bAttrsets);
printMsg(v, format(" right-biased unions: %1%") % nrOpUpdates);
printMsg(v, format(" values copied in right-biased unions: %1%") % nrOpUpdateValuesCopied);
printMsg(v, format(" symbols in symbol table: %1%") % symbols.size());
printMsg(v, format(" size of symbol table: %1%") % symbols.totalSize());
printMsg(v, format(" number of thunks: %1%") % nrThunks);
printMsg(v, format(" number of thunks avoided: %1%") % nrAvoided);
printMsg(v, format(" number of attr lookups: %1%") % nrLookups);
printMsg(v, format(" number of primop calls: %1%") % nrPrimOpCalls);
printMsg(v, format(" number of function calls: %1%") % nrFunctionCalls);
printMsg(v, format(" total allocations: %1% bytes") % (bEnvs + bLists + bValues + bAttrsets));
#if HAVE_BOEHMGC
GC_word heapSize, totalBytes;
GC_get_heap_usage_safe(&heapSize, 0, 0, 0, &totalBytes);
printMsg(v, format(" current Boehm heap size: %1% bytes") % heapSize);
printMsg(v, format(" total Boehm heap allocations: %1% bytes") % totalBytes);
#endif
if (showStats) {
printMsg(v, "evaluation statistics:");
auto outPath = getEnv("NIX_SHOW_STATS_PATH","-");
std::fstream fs;
if (outPath != "-") {
fs.open(outPath, std::fstream::out);
printMsg(v, format(" written to: %1%") % outPath);
}
JSONObject topObj(outPath == "-" ? cout : fs, true);
topObj.attr("cpuTime",cpuTime);
{
auto envs = topObj.object("envs");
envs.attr("number", nrEnvs);
envs.attr("elements", nrValuesInEnvs);
envs.attr("bytes", bEnvs);
}
{
auto lists = topObj.object("list");
lists.attr("elements", nrListElems);
lists.attr("bytes", bLists);
lists.attr("concats", nrListConcats);
}
{
auto values = topObj.object("values");
values.attr("number", nrValues);
values.attr("bytes", bValues);
}
{
auto syms = topObj.object("symbols");
syms.attr("number", symbols.size());
syms.attr("bytes", symbols.totalSize());
}
{
auto sets = topObj.object("sets");
sets.attr("number", nrAttrsets);
sets.attr("bytes", bAttrsets);
sets.attr("elements", nrAttrsInAttrsets);
}
{
JSONObject sizes = topObj.object("sizes");
sizes.attr("Env", sizeof(Env));
sizes.attr("Value", sizeof(Value));
sizes.attr("Bindings", sizeof(Bindings));
sizes.attr("Attr", sizeof(Attr));
}
topObj.attr("nrOpUpdates", nrOpUpdates);
topObj.attr("nrOpUpdateValuesCopied", nrOpUpdateValuesCopied);
topObj.attr("nrThunks", nrThunks);
topObj.attr("nrAvoided", nrAvoided);
topObj.attr("nrLookups", nrLookups);
topObj.attr("nrPrimOpCalls", nrPrimOpCalls);
topObj.attr("nrFunctionCalls", nrFunctionCalls);
#if HAVE_BOEHMGC
JSONObject gc = topObj.object("gc");
gc.attr("heapSize", heapSize);
gc.attr("totalBytes", totalBytes);
#endif
}
if (countCalls) {
v = lvlInfo;