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/*++
Copyright (c) 1992 Microsoft Corporation
Module Name:
LookAsid.c
Abstract:
WinDbg Extension Api
Author:
Gary Kimura [GaryKi] 22-Feb-96
Environment:
User Mode.
Revision History:
--*/
#include "precomp.h"
#pragma hdrstop
//
// A quick macro to dump a lookaside list given its variable name
//
#define Dump(S,R) { ULONG64 _a; \
if( (_a = GetExpression( S )) == 0) { \ dprintf("Failed GetExpression(\"%s\")\n", S); \ } else if ((R)) { \ ResetLookaside( _a, S ); \ } else { \ DumpLookaside( _a, S ); \ } \}
#define GetAddressFromName(A,N) { \
if (((A) = GetExpression( (N) )) == 0) { \ dprintf("Failed GetExpression(\"%s\")\n", N); \ return; \ } \}
#define ReadAtAddress(A,V,S) { ULONG _r; \
if (!ReadMemory((A), &(V), (S), &_r ) || (_r < (S))) { \ dprintf("Can't Read Memory at %08p\n", (A)); \ return; \ } \}
#define WriteAtAddress(A,V,S) { ULONG _r; \
if (!WriteMemory( (A), &(V), (S), &_r ) || (_r < (S))) { \ dprintf("Can't Write Memory at %08p\n", (A)); \ return; \ } \}
ULONG TotalPagedPotential;ULONG TotalPagedUsed;ULONG TotalNPagedPotential;ULONG TotalNPagedUsed;
VOIDDumpLookaside ( IN ULONG64 Address, IN PUCHAR Name )
/*++
Routine Description:
Dump a specific lookaside list.
Arguments:
Address - Gives the address of the lookaside list to dump
Name - Gives an optional name of to print next to the lookaside list
Return Value:
None
--*/
{ ULONG Results;
ULONG AllocationHitRate; ULONG FreeHitRate;
UCHAR Str[64]; ULONG TotalAllocates, Depth, TotalFrees, Type, Size, Tag;
//
// Read the lookaside list from memory
//
if (GetFieldValue( Address, "NPAGED_LOOKASIDE_LIST", "L.TotalAllocates", TotalAllocates)) {
dprintf("Can't read lookaside \"%s\" at 0x%08p\n", Name, Address); }
//
// Dump it out. Note that for purposes of dumping a paged and nonpaged lookaside are
// the same. I.e., the fields we're interested are at identical offsets
//
InitTypeRead(Address, NPAGED_LOOKASIDE_LIST);
//
// Compute the hit rate
//
TotalFrees = (ULONG) ReadField(L.TotalFrees); AllocationHitRate = (TotalAllocates > 0 ? (((TotalAllocates - (ULONG) ReadField(L.AllocateMisses))*100)/TotalAllocates) : 0); FreeHitRate = (TotalFrees > 0 ? (((TotalFrees - (ULONG) ReadField(L.FreeMisses))*100)/TotalFrees) : 0);
//
// Decide what type of pool is behind the lookaside list
//
Type = (ULONG) ReadField(L.Type); switch (Type & 0x7) { case NonPagedPool: sprintf(Str, "NonPagedPool"); break; case PagedPool: sprintf(Str, "PagedPool"); break; case NonPagedPoolMustSucceed: sprintf(Str, "NonPagedPoolMustSucceed"); break; case DontUseThisType: sprintf(Str, "DontUseThisType"); break; case NonPagedPoolCacheAligned: sprintf(Str, "NonPagedPoolCacheAligned"); break; case PagedPoolCacheAligned: sprintf(Str, "PagedPoolCacheAligned"); break; case NonPagedPoolCacheAlignedMustS: sprintf(Str, "NonPagedPoolCacheAlignedMustS"); break; default: sprintf(Str, "Unknown pool type"); break; }
//
// Add to the total usage and potential based on pool type
//
Depth = (ULONG) ReadField(L.Depth); Size = (ULONG) ReadField(L.Size); if (Type & 0x1) {
TotalPagedUsed += (ULONG) ReadField(L.ListHead.Depth) * Size; TotalPagedPotential += Depth * Size;
} else {
TotalNPagedUsed += (ULONG) ReadField(ListHead.Depth) * Size; TotalNPagedPotential += Depth * Size; }
//
// Now print everything
//
Tag = (ULONG) ReadField(L.Tag); dprintf("\nLookaside \"%s\" @ %08p \"%c%c%c%c\"\n", Name, Address, ((PUCHAR)&Tag)[0], ((PUCHAR)&Tag)[1], ((PUCHAR)&Tag)[2], ((PUCHAR)&Tag)[3]); dprintf(" Type = %04x %s", Type, Str); if (Type & POOL_QUOTA_FAIL_INSTEAD_OF_RAISE) { dprintf(" QuotaFailInsteadOrRaise"); } if (Type & POOL_RAISE_IF_ALLOCATION_FAILURE) { dprintf(" RaiseIfAllocationFailure"); } dprintf("\n"); dprintf(" Current Depth = %8ld Max Depth = %8ld\n", (ULONG) ReadField(L.ListHead.Depth), Depth); dprintf(" Size = %8ld Max Alloc = %8ld\n", Size, Depth * Size); dprintf(" AllocateMisses = %8ld FreeMisses = %8ld\n", (ULONG) ReadField(L.AllocateMisses), (ULONG) ReadField(L.FreeMisses)); dprintf(" TotalAllocates = %8ld TotalFrees = %8ld\n", TotalAllocates, TotalFrees); dprintf(" Hit Rate = %3d%% Hit Rate = %3d%%\n", AllocationHitRate, FreeHitRate);
return;}
VOIDResetLookaside ( IN ULONG64 Address, IN PUCHAR Name )
/*++
Routine Description:
Resets the counters in a specific lookaside list.
Arguments:
Address - Gives the address of the lookaside list to reset
Name - Gives an optional name of to print in case of errors
Return Value:
None
--*/
{ // NPAGED_LOOKASIDE_LIST Lookaside;
ULONG Results, Off=0, Zero=0;
//
// Get offset
//
GetFieldOffset("NPAGED_LOOKASIDE_LIST", "L.TotalAllocates", &Off); //
// Zero out the counters
//
if (!WriteMemory( Address + Off, &Zero, sizeof(ULONG), &Results ) || (Results < sizeof(ULONG))) {
dprintf("Can't write lookaside \"%s\" at 0x%08p\n", Name, Address); }
GetFieldOffset("NPAGED_LOOKASIDE_LIST", "L.AllocateMisses", &Off); if (!WriteMemory( Address + Off, &Zero, sizeof(ULONG), &Results ) || (Results < sizeof(ULONG))) { dprintf("Can't write lookaside \"%s\" at 0x%08p\n", Name, Address); }
GetFieldOffset("NPAGED_LOOKASIDE_LIST", "L.TotalFrees", &Off); if (!WriteMemory( Address + Off, &Zero, sizeof(ULONG), &Results ) || (Results < sizeof(ULONG))) { dprintf("Can't write lookaside \"%s\" at 0x%08p\n", Name, Address); }
GetFieldOffset("NPAGED_LOOKASIDE_LIST", "L.FreeMisses", &Off); if (!WriteMemory( Address + Off, &Zero, sizeof(ULONG), &Results ) || (Results < sizeof(ULONG))) { dprintf("Can't write lookaside \"%s\" at 0x%08p\n", Name, Address); }
return;}
VOIDSetDepthLookaside ( IN ULONG64 Address, IN PUCHAR Name, IN ULONG Depth )
/*++
Routine Description:
Set the depth of a specific lookaside list.
Arguments:
Address - Gives the address of the lookaside list to reset
Name - Gives an optional name of to print in case of errors
Depth - Supplies the depth to set the lookaside list to
Return Value:
None
--*/
{ ULONG Results, Off=0;
//
// Get offset
//
GetFieldOffset("NPAGED_LOOKASIDE_LIST", "L.Depth", &Off); //
// Set the depth
//
if (!WriteMemory( Address + Off, &Depth, sizeof(USHORT), &Results ) || (Results < sizeof(USHORT))) {
dprintf("Can't write lookaside \"%s\" at 0x%08p\n", Name, Address); } return;}
DECLARE_API( lookaside )
/*++
Routine Description:
Dump lookaside lists
Arguments:
arg - [Address] [options]
Return Value:
None
--*/
{ ULONG64 LookasideToDump; ULONG Options; ULONG Depth;
//
// If the caller specified an address then that the the lookaside list we dump
//
LookasideToDump = 0; Options = 0; Depth = 0;
if (GetExpressionEx(args,&LookasideToDump, &args)) { if (!sscanf(args, "%lx %lx",&Options, &Depth)) { Options = 0; Depth = 0; } }
if (LookasideToDump != 0) {
if (Options == 0) {
DumpLookaside( LookasideToDump, "");
} else if (Options == 1) {
ResetLookaside( LookasideToDump, "");
} else if (Options == 2) {
SetDepthLookaside( LookasideToDump, "", Depth ); }
return E_INVALIDARG; }
//
// Reset the counters we use to sum up the potential pool usage
//
TotalPagedPotential = 0; TotalPagedUsed = 0; TotalNPagedPotential = 0; TotalNPagedUsed = 0;
//
// Otherwise we'll dump a built in set of lookaside lists
//
Dump("nt!CcTwilightLookasideList", Options == 1);
Dump("nt!IopSmallIrpLookasideList", Options == 1); Dump("nt!IopLargeIrpLookasideList", Options == 1); Dump("nt!IopMdlLookasideList", Options == 1);
Dump("nt!FsRtlFastMutexLookasideList", Options == 1); Dump("nt!TunnelLookasideList", Options == 1);
Dump("nt!ObpCreateInfoLookasideList", Options == 1); Dump("nt!ObpNameBufferLookasideList", Options == 1);
Dump("afd!AfdWorkQueueLookasideList", Options == 1);
Dump("Fastfat!FatIrpContextLookasideList", Options == 1);
Dump("Ntfs!NtfsIoContextLookasideList", Options == 1); Dump("Ntfs!NtfsIrpContextLookasideList", Options == 1); Dump("Ntfs!NtfsKeventLookasideList", Options == 1); Dump("Ntfs!NtfsScbNonpagedLookasideList", Options == 1); Dump("Ntfs!NtfsScbSnapshotLookasideList", Options == 1);
Dump("Ntfs!NtfsCcbLookasideList", Options == 1); Dump("Ntfs!NtfsCcbDataLookasideList", Options == 1); Dump("Ntfs!NtfsDeallocatedRecordsLookasideList", Options == 1); Dump("Ntfs!NtfsFcbDataLookasideList", Options == 1); Dump("Ntfs!NtfsFcbIndexLookasideList", Options == 1); Dump("Ntfs!NtfsIndexContextLookasideList", Options == 1); Dump("Ntfs!NtfsLcbLookasideList", Options == 1); Dump("Ntfs!NtfsNukemLookasideList", Options == 1); Dump("Ntfs!NtfsScbDataLookasideList", Options == 1);
if (Options != 1) {
dprintf("\n"); dprintf("Total NonPaged currently allocated for above lists = %8ld\n", TotalNPagedUsed); dprintf("Total NonPaged potential for above lists = %8ld\n", TotalNPagedPotential); dprintf("Total Paged currently allocated for above lists = %8ld\n", TotalPagedUsed); dprintf("Total Paged potential for above lists = %8ld\n", TotalPagedPotential);
TotalPagedPotential = 0; TotalPagedUsed = 0; TotalNPagedPotential = 0; TotalNPagedUsed = 0; }
/*
//
// Now dump out the small pool lookaside lists or zero their
// counters.
//
if (Options == 1) {
ULONG Address; ULONG Results; ULONG i;
//
// Get the location of the nonpaged list
//
GetAddressFromName( Address, "ExpSmallNPagedPoolLookasideLists" );
//
// Read in each list, zero out it counters and write it back out
//
for ( i = 0; i < POOL_SMALL_LISTS; i += 1) {
ULONG Location; SMALL_POOL_LOOKASIDE LookasideList;
Location = Address + i * sizeof(SMALL_POOL_LOOKASIDE);
ReadAtAddress( Location, LookasideList, sizeof(SMALL_POOL_LOOKASIDE) );
LookasideList.TotalAllocates = 0; LookasideList.AllocateHits = 0; LookasideList.TotalFrees = 0; LookasideList.FreeHits = 0;
WriteAtAddress( Location, LookasideList, sizeof(SMALL_POOL_LOOKASIDE) ); }
//
// Get the location of the paged list
//
#ifndef TARGET_PPC
GetAddressFromName( Address, "ExpSmallPagedPoolLookasideLists" );
//
// Read in each list, zero out it counters and write it back out
//
for ( i = 0; i < POOL_SMALL_LISTS; i += 1) {
ULONG Location; SMALL_POOL_LOOKASIDE LookasideList;
Location = Address + i * sizeof(SMALL_POOL_LOOKASIDE);
ReadAtAddress( Location, LookasideList, sizeof(SMALL_POOL_LOOKASIDE) );
LookasideList.TotalAllocates = 0; LookasideList.AllocateHits = 0; LookasideList.TotalFrees = 0; LookasideList.FreeHits = 0;
WriteAtAddress( Location, LookasideList, sizeof(SMALL_POOL_LOOKASIDE) ); }
#endif // TARGET_PPC
} else {
ULONG Address; ULONG Results; ULONG i;
//
// Get the location of the nonpaged list
//
GetAddressFromName( Address, "ExpSmallNPagedPoolLookasideLists" ); dprintf("\nExpSmallNPagedLookasideLists @ %08lx\n", Address);
//
// Read in each list and dump it out
//
for ( i = 0; i < POOL_SMALL_LISTS; i += 1) {
ULONG Location; SMALL_POOL_LOOKASIDE LookasideList; ULONG AllocationHitRate; ULONG FreeHitRate;
Location = Address + i * sizeof(SMALL_POOL_LOOKASIDE);
ReadAtAddress( Location, LookasideList, sizeof(SMALL_POOL_LOOKASIDE) );
TotalNPagedUsed += LookasideList.SListHead.Depth * (i+1)*32; TotalNPagedPotential += LookasideList.Depth * (i+1)*32;
AllocationHitRate = (LookasideList.TotalAllocates > 0 ? ((LookasideList.AllocateHits*100)/LookasideList.TotalAllocates) : 0); FreeHitRate = (LookasideList.TotalFrees > 0 ? ((LookasideList.FreeHits*100)/LookasideList.TotalFrees) : 0);
dprintf("\n Nonpaged %d bytes @ %08lx\n", (i+1)*32, Location);
dprintf(" Current Depth = %8ld Max Depth = %8ld\n", LookasideList.SListHead.Depth, LookasideList.Depth); dprintf(" Size = %8ld Max Alloc = %8ld\n", (i+1)*32, LookasideList.Depth * (i+1)*32); dprintf(" AllocateHits = %8ld FreeHits = %8ld\n", LookasideList.AllocateHits, LookasideList.FreeHits); dprintf(" TotalAllocates = %8ld TotalFrees = %8ld\n", LookasideList.TotalAllocates, LookasideList.TotalFrees); dprintf(" Hit Rate = %3d%% Hit Rate = %3d%%\n", AllocationHitRate, FreeHitRate); }
//
// Get the location of the paged list
//
#ifndef TARGET_PPC
GetAddressFromName( Address, "ExpSmallPagedPoolLookasideLists" ); dprintf("\nExpSmallPagedLookasideLists @ %08lx\n", Address);
//
// Read in each list and dump it out
//
for ( i = 0; i < POOL_SMALL_LISTS; i += 1) {
ULONG Location; SMALL_POOL_LOOKASIDE LookasideList; ULONG AllocationHitRate; ULONG FreeHitRate;
Location = Address + i * sizeof(SMALL_POOL_LOOKASIDE);
ReadAtAddress( Location, LookasideList, sizeof(SMALL_POOL_LOOKASIDE) );
TotalPagedUsed += LookasideList.SListHead.Depth * (i+1)*32; TotalPagedPotential += LookasideList.Depth * (i+1)*32;
AllocationHitRate = (LookasideList.TotalAllocates > 0 ? ((LookasideList.AllocateHits*100)/LookasideList.TotalAllocates) : 0); FreeHitRate = (LookasideList.TotalFrees > 0 ? ((LookasideList.FreeHits*100)/LookasideList.TotalFrees) : 0);
dprintf("\n Paged %d bytes @ %08lx\n", (i+1)*32, Location);
dprintf(" Current Depth = %8ld Max Depth = %8ld\n", LookasideList.SListHead.Depth, LookasideList.Depth); dprintf(" Size = %8ld Max Alloc = %8ld\n", (i+1)*32, LookasideList.Depth * (i+1)*32); dprintf(" AllocateHits = %8ld FreeHits = %8ld\n", LookasideList.AllocateHits, LookasideList.FreeHits); dprintf(" TotalAllocates = %8ld TotalFrees = %8ld\n", LookasideList.TotalAllocates, LookasideList.TotalFrees); dprintf(" Hit Rate = %3d%% Hit Rate = %3d%%\n", AllocationHitRate, FreeHitRate); }
#endif // TARGET_PPC
dprintf("\n"); dprintf("Total NonPaged currently allocated for pool lists = %8ld\n", TotalNPagedUsed); dprintf("Total NonPaged potential for pool lists = %8ld\n", TotalNPagedPotential); dprintf("Total Paged currently allocated for pool lists = %8ld\n", TotalPagedUsed); dprintf("Total Paged potential for pool lists = %8ld\n", TotalPagedPotential); }
{ ULONG Address; ULONG Results;
ULONG i; ULONG j;
UCHAR KeNumberProcessors; ULONG KiProcessorBlock[32];
//
// First find out how many processors there are and then read in the
// array of processor block pointers
//
GetAddressFromName( Address, "KeNumberProcessors" ); ReadAtAddress( Address, Address, sizeof(ULONG) );
//
// For some bizarre reason sometimes we do a indirect read to get the
// number of processors and at other times it is more direct
//
if (Address <= 32) {
KeNumberProcessors = (UCHAR)Address;
} else {
ReadAtAddress( Address, KeNumberProcessors, sizeof(UCHAR) ); }
GetAddressFromName( Address, "KiProcessorBlock" ); ReadAtAddress( Address, KiProcessorBlock, sizeof(ULONG)*KeNumberProcessors );
//
// Check if we are to reset the counters
//
if (Options == 1) {
KPRCB Kprcb;
for (i = 0; i < KeNumberProcessors; i += 1) {
ReadAtAddress( KiProcessorBlock[i], Kprcb, sizeof(KPRCB) );
for (j = 0; j < POOL_SMALL_LISTS; j += 1) {
Kprcb.SmallNPagedPoolLookasideLists[j].AllocateHits = 0; Kprcb.SmallNPagedPoolLookasideLists[j].TotalAllocates = 0;
#ifndef TARGET_PPC
Kprcb.SmallPagedPoolLookasideLists[j].AllocateHits = 0; Kprcb.SmallPagedPoolLookasideLists[j].TotalAllocates = 0;#endif // TARGET_PPC
}
WriteAtAddress( KiProcessorBlock[i], Kprcb, sizeof(KPRCB) ); }
} else {
KPRCB Kprcb[32]; ULONG Addr[32]; ULONG Depth[32]; ULONG Hits[32]; ULONG Total[32]; ULONG HitRate[32]; ULONG MaxAlloc[32];
dprintf("\nSmall Pool Lookaside lists\n\n"); dprintf("Kprcb ="); for (i = 0; i < KeNumberProcessors; i += 1) {
dprintf(" %08lx ", KiProcessorBlock[i]); ReadAtAddress( KiProcessorBlock[i], Kprcb[i], sizeof(KPRCB) ); } dprintf("\n");
for ( j = 0; j < POOL_SMALL_LISTS; j += 1) {
dprintf("\nNonpaged %d bytes\n", (j+1)*32); for (i = 0; i < KeNumberProcessors; i += 1) {
Addr[i] = KiProcessorBlock[i] + FIELD_OFFSET(KPRCB, SmallNPagedPoolLookasideLists[j]);
Depth[i] = Kprcb[i].SmallNPagedPoolLookasideLists[j].Depth; Hits[i] = Kprcb[i].SmallNPagedPoolLookasideLists[j].AllocateHits; Total[i] = Kprcb[i].SmallNPagedPoolLookasideLists[j].TotalAllocates;
HitRate[i] = (Total[i] > 0 ? ((Hits[i]*100)/Total[i]) : 0); MaxAlloc[i] = ((j+1)*32) * Depth[i]; }
dprintf("Address ="); for (i = 0; i < KeNumberProcessors; i += 1) { dprintf(" %08lx ", Addr[i]); } dprintf("\n"); dprintf("Depth ="); for (i = 0; i < KeNumberProcessors; i += 1) { dprintf(" %8d ", Depth[i]); } dprintf("\n"); dprintf("MaxAlloc ="); for (i = 0; i < KeNumberProcessors; i += 1) { dprintf(" %8d ", MaxAlloc[i]); } dprintf("\n"); dprintf("Hits ="); for (i = 0; i < KeNumberProcessors; i += 1) { dprintf(" %8d ", Hits[i]); } dprintf("\n"); dprintf("Total ="); for (i = 0; i < KeNumberProcessors; i += 1) { dprintf(" %8d ", Total[i]); } dprintf("\n"); dprintf("HitRate ="); for (i = 0; i < KeNumberProcessors; i += 1) { dprintf(" %8d%%", HitRate[i]); } dprintf("\n"); }
#ifndef TARGET_PPC
for ( j = 0; j < POOL_SMALL_LISTS; j += 1) {
dprintf("\nPaged %d bytes\n", (j+1)*32); for (i = 0; i < KeNumberProcessors; i += 1) {
Addr[i] = KiProcessorBlock[i] + FIELD_OFFSET(KPRCB, SmallPagedPoolLookasideLists[j]);
Depth[i] = Kprcb[i].SmallPagedPoolLookasideLists[j].Depth; Hits[i] = Kprcb[i].SmallPagedPoolLookasideLists[j].AllocateHits; Total[i] = Kprcb[i].SmallPagedPoolLookasideLists[j].TotalAllocates;
HitRate[i] = (Total[i] > 0 ? ((Hits[i]*100)/Total[i]) : 0); MaxAlloc[i] = ((j+1)*32) * Depth[i]; }
dprintf("Address ="); for (i = 0; i < KeNumberProcessors; i += 1) { dprintf(" %08lx ", Addr[i]); } dprintf("\n"); dprintf("Depth ="); for (i = 0; i < KeNumberProcessors; i += 1) { dprintf(" %8d ", Depth[i]); } dprintf("\n"); dprintf("MaxAlloc ="); for (i = 0; i < KeNumberProcessors; i += 1) { dprintf(" %8d ", MaxAlloc[i]); } dprintf("\n"); dprintf("Hits ="); for (i = 0; i < KeNumberProcessors; i += 1) { dprintf(" %8d ", Hits[i]); } dprintf("\n"); dprintf("Total ="); for (i = 0; i < KeNumberProcessors; i += 1) { dprintf(" %8d ", Total[i]); } dprintf("\n"); dprintf("HitRate ="); for (i = 0; i < KeNumberProcessors; i += 1) { dprintf(" %8d%%", HitRate[i]); } dprintf("\n"); }#endif // TARGET_PPC
} }*/
return S_OK;}
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