Fix per-flag-cache size tracking
This commit is contained in:
Pieter Wuille
parent
0ec6e14c17
commit
d5764c9149
3 changed files with 42 additions and 33 deletions
4
Makefile
4
Makefile
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@ -5,9 +5,9 @@ dnsseed: dns.o bitcoin.o netbase.o protocol.o db.o main.o util.o
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g++ -pthread $(LDFLAGS) -o dnsseed dns.o bitcoin.o netbase.o protocol.o db.o main.o util.o -lcrypto
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%.o: %.cpp bitcoin.h netbase.h protocol.h db.h serialize.h uint256.h util.h
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g++ -pthread $(CXXFLAGS) -Wno-invalid-offsetof -c -o $@ $<
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g++ -std=c++11 -pthread $(CXXFLAGS) -Wall -Wno-unused -Wno-sign-compare -Wno-reorder -Wno-comment -c -o $@ $<
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dns.o: dns.c
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gcc -pthread -std=c99 $(CXXFLAGS) dns.c -c -o dns.o
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gcc -pthread -std=c99 $(CXXFLAGS) dns.c -Wall -c -o dns.o
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%.o: %.cpp
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67
main.cpp
67
main.cpp
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@ -7,6 +7,7 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <getopt.h>
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#include <atomic>
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#include "bitcoin.h"
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#include "db.h"
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@ -188,19 +189,25 @@ extern "C" void* ThreadCrawler(void* data) {
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db.ResultMany(ips);
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db.Add(addr);
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} while(1);
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return nullptr;
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}
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extern "C" int GetIPList(void *thread, char *requestedHostname, addr_t *addr, int max, int ipv4, int ipv6);
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class CDnsThread {
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public:
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struct FlagSpecificData {
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int nIPv4, nIPv6;
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std::vector<addr_t> cache;
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time_t cacheTime;
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unsigned int cacheHits;
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FlagSpecificData() : nIPv4(0), nIPv6(0), cacheTime(0), cacheHits(0) {}
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};
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dns_opt_t dns_opt; // must be first
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const int id;
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std::map<uint64_t, vector<addr_t> > cache;
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int nIPv4, nIPv6;
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std::map<uint64_t, time_t> cacheTime;
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unsigned int cacheHits;
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uint64_t dbQueries;
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std::map<uint64_t, FlagSpecificData> perflag;
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std::atomic<uint64_t> dbQueries;
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std::set<uint64_t> filterWhitelist;
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void cacheHit(uint64_t requestedFlags, bool force = false) {
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@ -210,15 +217,16 @@ public:
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nets[NET_IPV6] = true;
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}
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time_t now = time(NULL);
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cacheHits++;
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if (force || cacheHits > (cache[requestedFlags].size()*cache[requestedFlags].size()/400) || (cacheHits*cacheHits > cache[requestedFlags].size() / 20 && (now - cacheTime[requestedFlags] > 5))) {
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FlagSpecificData thisflag = perflag[requestedFlags];
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thisflag.cacheHits++;
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if (force || thisflag.cacheHits * 400 > (thisflag.cache.size()*thisflag.cache.size()) || (thisflag.cacheHits*thisflag.cacheHits * 20 > thisflag.cache.size() && (now - thisflag.cacheTime > 5))) {
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set<CNetAddr> ips;
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db.GetIPs(ips, requestedFlags, 1000, nets);
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dbQueries++;
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cache[requestedFlags].clear();
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nIPv4 = 0;
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nIPv6 = 0;
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cache[requestedFlags].reserve(ips.size());
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thisflag.cache.clear();
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thisflag.nIPv4 = 0;
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thisflag.nIPv6 = 0;
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thisflag.cache.reserve(ips.size());
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for (set<CNetAddr>::iterator it = ips.begin(); it != ips.end(); it++) {
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struct in_addr addr;
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struct in6_addr addr6;
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@ -226,18 +234,18 @@ public:
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addr_t a;
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a.v = 4;
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memcpy(&a.data.v4, &addr, 4);
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cache[requestedFlags].push_back(a);
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nIPv4++;
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thisflag.cache.push_back(a);
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thisflag.nIPv4++;
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} else if ((*it).GetIn6Addr(&addr6)) {
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addr_t a;
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a.v = 6;
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memcpy(&a.data.v6, &addr6, 16);
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cache[requestedFlags].push_back(a);
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nIPv6++;
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thisflag.cache.push_back(a);
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thisflag.nIPv6++;
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}
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}
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cacheHits = 0;
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cacheTime[requestedFlags] = now;
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thisflag.cacheHits = 0;
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thisflag.cacheTime = now;
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}
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}
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@ -250,12 +258,8 @@ public:
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dns_opt.cb = GetIPList;
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dns_opt.port = opts->nPort;
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dns_opt.nRequests = 0;
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cache.clear();
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cacheTime.clear();
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cacheHits = 0;
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dbQueries = 0;
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nIPv4 = 0;
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nIPv6 = 0;
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perflag.clear();
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filterWhitelist = opts->filter_whitelist;
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}
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@ -280,8 +284,9 @@ extern "C" int GetIPList(void *data, char *requestedHostname, addr_t* addr, int
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else if (strcasecmp(requestedHostname, thread->dns_opt.host))
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return 0;
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thread->cacheHit(requestedFlags);
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unsigned int size = thread->cache[requestedFlags].size();
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unsigned int maxmax = (ipv4 ? thread->nIPv4 : 0) + (ipv6 ? thread->nIPv6 : 0);
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auto& thisflag = thread->perflag[requestedFlags];
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unsigned int size = thisflag.cache.size();
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unsigned int maxmax = (ipv4 ? thisflag.nIPv4 : 0) + (ipv6 ? thisflag.nIPv6 : 0);
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if (max > size)
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max = size;
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if (max > maxmax)
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@ -290,16 +295,16 @@ extern "C" int GetIPList(void *data, char *requestedHostname, addr_t* addr, int
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while (i<max) {
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int j = i + (rand() % (size - i));
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do {
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bool ok = (ipv4 && thread->cache[requestedFlags][j].v == 4) ||
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(ipv6 && thread->cache[requestedFlags][j].v == 6);
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bool ok = (ipv4 && thisflag.cache[j].v == 4) ||
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(ipv6 && thisflag.cache[j].v == 6);
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if (ok) break;
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j++;
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if (j==size)
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j=i;
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} while(1);
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addr[i] = thread->cache[requestedFlags][j];
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thread->cache[requestedFlags][j] = thread->cache[requestedFlags][i];
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thread->cache[requestedFlags][i] = addr[i];
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addr[i] = thisflag.cache[j];
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thisflag.cache[j] = thisflag.cache[i];
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thisflag.cache[i] = addr[i];
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i++;
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}
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return max;
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@ -310,6 +315,7 @@ vector<CDnsThread*> dnsThread;
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extern "C" void* ThreadDNS(void* arg) {
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CDnsThread *thread = (CDnsThread*)arg;
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thread->run();
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return nullptr;
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}
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int StatCompare(const CAddrReport& a, const CAddrReport& b) {
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@ -359,6 +365,7 @@ extern "C" void* ThreadDumper(void*) {
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fclose(ff);
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}
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} while(1);
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return nullptr;
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}
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extern "C" void* ThreadStats(void*) {
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@ -387,6 +394,7 @@ extern "C" void* ThreadStats(void*) {
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printf("%s %i/%i available (%i tried in %is, %i new, %i active), %i banned; %llu DNS requests, %llu db queries", c, stats.nGood, stats.nAvail, stats.nTracked, stats.nAge, stats.nNew, stats.nAvail - stats.nTracked - stats.nNew, stats.nBanned, (unsigned long long)requests, (unsigned long long)queries);
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Sleep(1000);
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} while(1);
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return nullptr;
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}
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static const string mainnet_seeds[] = {"dnsseed.bluematt.me", "bitseed.xf2.org", "dnsseed.bitcoin.dashjr.org", "seed.bitcoin.sipa.be", ""};
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@ -411,6 +419,7 @@ extern "C" void* ThreadSeeder(void*) {
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}
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Sleep(1800000);
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} while(1);
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return nullptr;
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}
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int main(int argc, char **argv) {
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@ -322,7 +322,7 @@ public:
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// hex string to uint
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static char phexdigit[256] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0, 0,0xa,0xb,0xc,0xd,0xe,0xf,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0xa,0xb,0xc,0xd,0xe,0xf,0,0,0,0,0,0,0,0,0 };
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const char* pbegin = psz;
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while (phexdigit[*psz] || *psz == '0')
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while (phexdigit[(unsigned char)*psz] || *psz == '0')
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psz++;
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psz--;
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unsigned char* p1 = (unsigned char*)pn;
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