/*++ 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; VOID DumpLookaside ( 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; } VOID ResetLookaside ( 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; } VOID SetDepthLookaside ( 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; }