path: root/users/multi/pkgs/htop/zfs-arc-stats/0008-Support-for-ZFS-Compressed-ARC-statistics.patch

From 613556faebd16325da8c9057c81f39a2410d803f Mon Sep 17 00:00:00 2001
From: Ross Williams <ross@ross-williams.net>
Date: Tue, 3 Sep 2019 18:26:02 +0000
Subject: [PATCH 8/9] Support for ZFS Compressed ARC statistics

---
 CRT.c                        | 14 ++++++
 CRT.h                        |  2 +
 Makefile.am                  | 12 +++--
 darwin/Platform.c            |  8 ++++
 darwin/Platform.h            |  2 +
 freebsd/Platform.c           |  8 ++++
 freebsd/Platform.h           |  2 +
 linux/LinuxProcessList.c     | 10 +++++
 linux/Platform.c             |  7 +++
 linux/Platform.h             |  2 +
 solaris/Platform.c           |  8 ++++
 solaris/Platform.h           |  2 +
 solaris/SolarisProcessList.c | 10 +++++
 zfs/ZfsArcStats.c            |  3 ++
 zfs/ZfsArcStats.h            |  3 ++
 zfs/ZfsCompressedArcMeter.c  | 86 ++++++++++++++++++++++++++++++++++++
 zfs/ZfsCompressedArcMeter.h  | 22 +++++++++
 zfs/openzfs_sysctl.c         | 18 ++++++++
 18 files changed, 215 insertions(+), 4 deletions(-)
 create mode 100644 zfs/ZfsCompressedArcMeter.c
 create mode 100644 zfs/ZfsCompressedArcMeter.h

diff --git a/CRT.c b/CRT.c
index b9017aa..cb36b6c 100644
--- a/CRT.c
+++ b/CRT.c
@@ -133,6 +133,8 @@ typedef enum ColorElements_ {
    ZFS_ANON,
    ZFS_HEADER,
    ZFS_OTHER,
+   ZFS_COMPRESSED,
+   ZFS_RATIO,
    LAST_COLORELEMENT
 } ColorElements;
 
@@ -242,6 +244,8 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [ZFS_ANON] = ColorPair(Magenta,Black),
       [ZFS_HEADER] = ColorPair(Cyan,Black),
       [ZFS_OTHER] = ColorPair(Magenta,Black),
+      [ZFS_COMPRESSED] = ColorPair(Blue,Black),
+      [ZFS_RATIO] = ColorPair(Magenta,Black),
    },
    [COLORSCHEME_MONOCHROME] = {
       [RESET_COLOR] = A_NORMAL,
@@ -306,6 +310,8 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [ZFS_ANON] = A_DIM,
       [ZFS_HEADER] = A_BOLD,
       [ZFS_OTHER] = A_DIM,
+      [ZFS_COMPRESSED] = A_BOLD,
+      [ZFS_RATIO] = A_BOLD,
    },
    [COLORSCHEME_BLACKONWHITE] = {
       [RESET_COLOR] = ColorPair(Black,White),
@@ -370,6 +376,8 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [ZFS_ANON] = ColorPair(Magenta,White),
       [ZFS_HEADER] = ColorPair(Yellow,White),
       [ZFS_OTHER] = ColorPair(Magenta,White),
+      [ZFS_COMPRESSED] = ColorPair(Cyan,White),
+      [ZFS_RATIO] = ColorPair(Magenta,White),
    },
    [COLORSCHEME_LIGHTTERMINAL] = {
       [RESET_COLOR] = ColorPair(Black,Black),
@@ -434,6 +442,8 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [ZFS_ANON] = A_BOLD | ColorPair(Magenta,Black),
       [ZFS_HEADER] = ColorPair(Black,Black),
       [ZFS_OTHER] = A_BOLD | ColorPair(Magenta,Black),
+      [ZFS_COMPRESSED] = ColorPair(Cyan,Black),
+      [ZFS_RATIO] = A_BOLD | ColorPair(Magenta,Black),
    },
    [COLORSCHEME_MIDNIGHT] = {
       [RESET_COLOR] = ColorPair(White,Blue),
@@ -498,6 +508,8 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [ZFS_ANON] = A_BOLD | ColorPair(Magenta,Blue),
       [ZFS_HEADER] = A_BOLD | ColorPair(Yellow,Blue),
       [ZFS_OTHER] = A_BOLD | ColorPair(Magenta,Blue),
+      [ZFS_COMPRESSED] = A_BOLD | ColorPair(White,Blue),
+      [ZFS_RATIO] = A_BOLD | ColorPair(Magenta,Blue),
    },
    [COLORSCHEME_BLACKNIGHT] = {
       [RESET_COLOR] = ColorPair(Cyan,Black),
@@ -562,6 +574,8 @@ int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
       [ZFS_ANON] = ColorPair(Magenta,Black),
       [ZFS_HEADER] = ColorPair(Yellow,Black),
       [ZFS_OTHER] = ColorPair(Magenta,Black),
+      [ZFS_COMPRESSED] = ColorPair(Blue,Black),
+      [ZFS_RATIO] = ColorPair(Magenta,Black),
    },
    [COLORSCHEME_BROKENGRAY] = { 0 } // dynamically generated.
 };
diff --git a/CRT.h b/CRT.h
index 2275349..d9eba55 100644
--- a/CRT.h
+++ b/CRT.h
@@ -121,6 +121,8 @@ typedef enum ColorElements_ {
    ZFS_ANON,
    ZFS_HEADER,
    ZFS_OTHER,
+   ZFS_COMPRESSED,
+   ZFS_RATIO,
    LAST_COLORELEMENT
 } ColorElements;
 
diff --git a/Makefile.am b/Makefile.am
index 204a8b7..2d159f0 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -50,6 +50,7 @@ linux_platform_headers = \
 	linux/LinuxCRT.h \
 	linux/Battery.h \
 	zfs/ZfsArcMeter.h \
+	zfs/ZfsCompressedArcMeter.h \
 	zfs/ZfsArcStats.h
 
 all_platform_headers += $(linux_platform_headers)
@@ -58,7 +59,7 @@ if HTOP_LINUX
 AM_CFLAGS += -rdynamic
 myhtopplatsources = linux/Platform.c linux/IOPriorityPanel.c linux/IOPriority.c \
 linux/LinuxProcess.c linux/LinuxProcessList.c linux/LinuxCRT.c linux/Battery.c \
-zfs/ZfsArcMeter.c zfs/ZfsArcStats.c
+zfs/ZfsArcMeter.c zfs/ZfsCompressedArcMeter.c zfs/ZfsArcStats.c
 
 myhtopplatheaders = $(linux_platform_headers)
 endif
@@ -73,6 +74,7 @@ freebsd_platform_headers = \
 	freebsd/FreeBSDCRT.h \
 	freebsd/Battery.h \
 	zfs/ZfsArcMeter.h \
+	zfs/ZfsCompressedArcMeter.h \
 	zfs/ZfsArcStats.h \
 	zfs/openzfs_sysctl.h
 
@@ -81,7 +83,7 @@ all_platform_headers += $(freebsd_platform_headers)
 if HTOP_FREEBSD
 myhtopplatsources = freebsd/Platform.c freebsd/FreeBSDProcessList.c \
 freebsd/FreeBSDProcess.c freebsd/FreeBSDCRT.c freebsd/Battery.c \
-zfs/ZfsArcMeter.c zfs/ZfsArcStats.c zfs/openzfs_sysctl.c
+zfs/ZfsArcMeter.c zfs/ZfsCompressedArcMeter.c zfs/ZfsArcStats.c zfs/openzfs_sysctl.c
 
 myhtopplatheaders = $(freebsd_platform_headers)
 endif
@@ -135,6 +137,7 @@ darwin_platform_headers = \
 	darwin/DarwinCRT.h \
 	darwin/Battery.h \
 	zfs/ZfsArcMeter.h \
+	zfs/ZfsCompressedArcMeter.h \
 	zfs/ZfsArcStats.h \
 	zfs/openzfs_sysctl.h
 
@@ -144,7 +147,7 @@ if HTOP_DARWIN
 AM_LDFLAGS += -framework IOKit -framework CoreFoundation
 myhtopplatsources = darwin/Platform.c darwin/DarwinProcess.c \
 darwin/DarwinProcessList.c darwin/DarwinCRT.c darwin/Battery.c \
-zfs/ZfsArcMeter.c zfs/ZfsArcStats.c zfs/openzfs_sysctl.c
+zfs/ZfsArcMeter.c zfs/ZfsCompressedArcMeter.c zfs/ZfsArcStats.c zfs/openzfs_sysctl.c
 
 myhtopplatheaders = $(darwin_platform_headers)
 endif
@@ -159,6 +162,7 @@ solaris_platform_headers = \
 	solaris/SolarisCRT.h \
 	solaris/Battery.h \
 	zfs/ZfsArcMeter.h \
+	zfs/ZfsCompressedArcMeter.h \
 	zfs/ZfsArcStats.h
 
 all_platform_headers += $(solaris_platform_headers)
@@ -167,7 +171,7 @@ if HTOP_SOLARIS
 myhtopplatsources = solaris/Platform.c \
 solaris/SolarisProcess.c solaris/SolarisProcessList.c \
 solaris/SolarisCRT.c solaris/Battery.c \
-zfs/ZfsArcMeter.c zfs/ZfsArcStats.c
+zfs/ZfsArcMeter.c zfs/ZfsCompressedArcMeter.c zfs/ZfsArcStats.c
 
 myhtopplatheaders = $(solaris_platform_headers)
 endif
diff --git a/darwin/Platform.c b/darwin/Platform.c
index f9f09b5..286ff16 100644
--- a/darwin/Platform.c
+++ b/darwin/Platform.c
@@ -16,6 +16,7 @@ in the source distribution for its full text.
 #include "HostnameMeter.h"
 #include "UptimeMeter.h"
 #include "zfs/ZfsArcMeter.h"
+#include "zfs/ZfsCompressedArcMeter.h"
 #include "DarwinProcessList.h"
 
 #include <stdlib.h>
@@ -119,6 +120,7 @@ MeterClass* Platform_meterTypes[] = {
    &LeftCPUs2Meter_class,
    &RightCPUs2Meter_class,
    &ZfsArcMeter_class,
+   &ZfsCompressedArcMeter_class,
    &BlankMeter_class,
    NULL
 };
@@ -249,6 +251,12 @@ void Platform_setZfsArcValues(Meter* this) {
    ZfsArcMeter_readStats(this, &(dpl->zfs));
 }
 
+void Platform_setZfsCompressedArcValues(Meter* this) {
+   DarwinProcessList* dpl = (DarwinProcessList*) this->pl;
+
+   ZfsCompressedArcMeter_readStats(this, &(dpl->zfs));
+}
+
 char* Platform_getProcessEnv(pid_t pid) {
    char* env = NULL;
 
diff --git a/darwin/Platform.h b/darwin/Platform.h
index f836077..e17661d 100644
--- a/darwin/Platform.h
+++ b/darwin/Platform.h
@@ -50,6 +50,8 @@ void Platform_setSwapValues(Meter* mtr);
 
 void Platform_setZfsArcValues(Meter* this);
 
+void Platform_setZfsCompressedArcValues(Meter* this);
+
 char* Platform_getProcessEnv(pid_t pid);
 
 #endif
diff --git a/freebsd/Platform.c b/freebsd/Platform.c
index b08a508..0986a3d 100644
--- a/freebsd/Platform.c
+++ b/freebsd/Platform.c
@@ -16,6 +16,7 @@ in the source distribution for its full text.
 #include "ClockMeter.h"
 #include "HostnameMeter.h"
 #include "zfs/ZfsArcMeter.h"
+#include "zfs/ZfsCompressedArcMeter.h"
 #include "FreeBSDProcess.h"
 #include "FreeBSDProcessList.h"
 
@@ -106,6 +107,7 @@ MeterClass* Platform_meterTypes[] = {
    &RightCPUs2Meter_class,
    &BlankMeter_class,
    &ZfsArcMeter_class,
+   &ZfsCompressedArcMeter_class,
    NULL
 };
 
@@ -205,6 +207,12 @@ void Platform_setZfsArcValues(Meter* this) {
    ZfsArcMeter_readStats(this, &(fpl->zfs));
 }
 
+void Platform_setZfsCompressedArcValues(Meter* this) {
+   FreeBSDProcessList* fpl = (FreeBSDProcessList*) this->pl;
+
+   ZfsCompressedArcMeter_readStats(this, &(fpl->zfs));
+}
+
 void Platform_setTasksValues(Meter* this) {
    // TODO
 }
diff --git a/freebsd/Platform.h b/freebsd/Platform.h
index 3dc7ebf..0268f2c 100644
--- a/freebsd/Platform.h
+++ b/freebsd/Platform.h
@@ -46,6 +46,8 @@ void Platform_setSwapValues(Meter* this);
 
 void Platform_setZfsArcValues(Meter* this);
 
+void Platform_setZfsCompressedArcValues(Meter* this);
+
 void Platform_setTasksValues(Meter* this);
 
 char* Platform_getProcessEnv(pid_t pid);
diff --git a/linux/LinuxProcessList.c b/linux/LinuxProcessList.c
index 3e88910..4596c3b 100644
--- a/linux/LinuxProcessList.c
+++ b/linux/LinuxProcessList.c
@@ -984,9 +984,14 @@ static inline void LinuxProcessList_scanZfsArcstats(LinuxProcessList* lpl) {
    char buffer[128];
    while (fgets(buffer, 128, file)) {
       #define tryRead(label, variable) do { if (String_startsWith(buffer, label) && sscanf(buffer + strlen(label), " %*2u %32llu", variable)) { break; } } while(0)
+      #define tryReadFlag(label, variable, flag) do { if (String_startsWith(buffer, label) && sscanf(buffer + strlen(label), " %*2u %32llu", variable)) { flag = 1; break; } else { flag = 0; } } while(0)
       switch (buffer[0]) {
       case 'c':
          tryRead("c_max", &lpl->zfs.max);
+         tryReadFlag("compressed", &lpl->zfs.compressed, &lpl->zfs.isCompressed);
+         break;
+      case 'u':
+         tryRead("uncompressed", &lpl->zfs.uncompressed);
          break;
       case 's':
          tryRead("size", &lpl->zfs.size);
@@ -1010,6 +1015,7 @@ static inline void LinuxProcessList_scanZfsArcstats(LinuxProcessList* lpl) {
          break;
       }
       #undef tryRead
+      #undef tryReadFlag
    }
    fclose(file);
 
@@ -1021,6 +1027,10 @@ static inline void LinuxProcessList_scanZfsArcstats(LinuxProcessList* lpl) {
    lpl->zfs.anon   /= 1024;
    lpl->zfs.header /= 1024;
    lpl->zfs.other   = (dbufSize + dnodeSize + bonusSize) / 1024;
+   if ( lpl->zfs.isCompressed ) {
+      lpl->zfs.compressed /= 1024;
+      lpl->zfs.uncompressed /= 1024;
+   }
 }
 
 static inline double LinuxProcessList_scanCPUTime(LinuxProcessList* this) {
diff --git a/linux/Platform.c b/linux/Platform.c
index 69f6688..f7088cf 100644
--- a/linux/Platform.c
+++ b/linux/Platform.c
@@ -22,6 +22,7 @@ in the source distribution for its full text.
 #include "ClockMeter.h"
 #include "HostnameMeter.h"
 #include "zfs/ZfsArcMeter.h"
+#include "zfs/ZfsCompressedArcMeter.h"
 #include "LinuxProcess.h"
 
 #include <math.h>
@@ -128,6 +129,7 @@ MeterClass* Platform_meterTypes[] = {
    &RightCPUs2Meter_class,
    &BlankMeter_class,
    &ZfsArcMeter_class,
+   &ZfsCompressedArcMeter_class,
    NULL
 };
 
@@ -221,6 +223,11 @@ void Platform_setZfsArcValues(Meter* this) {
    ZfsArcMeter_readStats(this, &(lpl->zfs));
 }
 
+void Platform_setZfsCompressedArcValues(Meter* this) {
+   LinuxProcessList* lpl = (LinuxProcessList*) this->pl;
+
+   ZfsCompressedArcMeter_readStats(this, &(lpl->zfs));
+}
 char* Platform_getProcessEnv(pid_t pid) {
    char procname[32+1];
    xSnprintf(procname, 32, "/proc/%d/environ", pid);
diff --git a/linux/Platform.h b/linux/Platform.h
index e775181..5d85eb3 100644
--- a/linux/Platform.h
+++ b/linux/Platform.h
@@ -45,6 +45,8 @@ void Platform_setSwapValues(Meter* this);
 
 void Platform_setZfsArcValues(Meter* this);
 
+void Platform_setZfsCompressedArcValues(Meter* this);
+
 char* Platform_getProcessEnv(pid_t pid);
 
 #endif
diff --git a/solaris/Platform.c b/solaris/Platform.c
index 74ae14e..7dcfe32 100644
--- a/solaris/Platform.c
+++ b/solaris/Platform.c
@@ -18,6 +18,7 @@ in the source distribution for its full text.
 #include "HostnameMeter.h"
 #include "UptimeMeter.h"
 #include "zfs/ZfsArcMeter.h"
+#include "zfs/ZfsCompressedArcMeter.h"
 #include "SolarisProcess.h"
 #include "SolarisProcessList.h"
 
@@ -124,6 +125,7 @@ MeterClass* Platform_meterTypes[] = {
    &LeftCPUs2Meter_class,
    &RightCPUs2Meter_class,
    &ZfsArcMeter_class,
+   &ZfsCompressedArcMeter_class,
    &BlankMeter_class,
    NULL
 };
@@ -228,6 +230,12 @@ void Platform_setZfsArcValues(Meter* this) {
    ZfsArcMeter_readStats(this, &(spl->zfs));
 }
 
+void Platform_setZfsCompressedArcValues(Meter* this) {
+   SolarisProcessList* spl = (SolarisProcessList*) this->pl;
+
+   ZfsCompressedArcMeter_readStats(this, &(spl->zfs));
+}
+
 static int Platform_buildenv(void *accum, struct ps_prochandle *Phandle, uintptr_t addr, const char *str) {
    envAccum *accump = accum;
    (void) Phandle;
diff --git a/solaris/Platform.h b/solaris/Platform.h
index 62757ff..3b5aef8 100644
--- a/solaris/Platform.h
+++ b/solaris/Platform.h
@@ -62,6 +62,8 @@ void Platform_setSwapValues(Meter* this);
 
 void Platform_setZfsArcValues(Meter* this);
 
+void Platform_setZfsCompressedArcValues(Meter* this);
+
 char* Platform_getProcessEnv(pid_t pid);
 
 #endif
diff --git a/solaris/SolarisProcessList.c b/solaris/SolarisProcessList.c
index b6bc6f5..d62ea1d 100644
--- a/solaris/SolarisProcessList.c
+++ b/solaris/SolarisProcessList.c
@@ -263,6 +263,16 @@ static inline void SolarisProcessList_scanZfsArcstats(ProcessList* pl) {
 
       cur_kstat = kstat_data_lookup( arcstats, "other_size" );
       spl->zfs.other = cur_kstat->value.ui64 / 1024;
+
+      if ((cur_kstat = kstat_data_lookup( arcstats, "compressed_size" )) != NULL) {
+         spl->zfs.compressed = cur_kstat->value.ui64 / 1024;
+         spl->zfs.isCompressed = 1;
+
+         cur_kstat = kstat_data_lookup( arcstats, "uncompressed_size" );
+         spl->zfs.uncompressed = cur_kstat->value.ui64 / 1024;
+      } else {
+         spl->zfs.isCompressed = 0;
+      }
    }
 }
 
diff --git a/zfs/ZfsArcStats.c b/zfs/ZfsArcStats.c
index c33076a..1bfaf47 100644
--- a/zfs/ZfsArcStats.c
+++ b/zfs/ZfsArcStats.c
@@ -8,6 +8,7 @@ in the source distribution for its full text.
 /*{
 typedef struct ZfsArcStats_ {
    int enabled;
+   int isCompressed;
    unsigned long long int max;
    unsigned long long int size;
    unsigned long long int MFU;
@@ -15,5 +16,7 @@ typedef struct ZfsArcStats_ {
    unsigned long long int anon;
    unsigned long long int header;
    unsigned long long int other;
+   unsigned long long int compressed;
+   unsigned long long int uncompressed;
 } ZfsArcStats;
 }*/
diff --git a/zfs/ZfsArcStats.h b/zfs/ZfsArcStats.h
index 3697af2..ee5d0ed 100644
--- a/zfs/ZfsArcStats.h
+++ b/zfs/ZfsArcStats.h
@@ -11,6 +11,7 @@ in the source distribution for its full text.
 
 typedef struct ZfsArcStats_ {
    int enabled;
+   int isCompressed;
    unsigned long long int max;
    unsigned long long int size;
    unsigned long long int MFU;
@@ -18,6 +19,8 @@ typedef struct ZfsArcStats_ {
    unsigned long long int anon;
    unsigned long long int header;
    unsigned long long int other;
+   unsigned long long int compressed;
+   unsigned long long int uncompressed;
 } ZfsArcStats;
 
 #endif
diff --git a/zfs/ZfsCompressedArcMeter.c b/zfs/ZfsCompressedArcMeter.c
new file mode 100644
index 0000000..ac3944d
--- /dev/null
+++ b/zfs/ZfsCompressedArcMeter.c
@@ -0,0 +1,86 @@
+/*
+htop - ZfsCompressedArcMeter.c
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPL, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "ZfsCompressedArcMeter.h"
+#include "ZfsArcStats.h"
+
+#include "CRT.h"
+#include "Platform.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <sys/param.h>
+#include <assert.h>
+
+/*{
+#include "ZfsArcStats.h"
+
+#include "Meter.h"
+}*/
+
+int ZfsCompressedArcMeter_attributes[] = {
+   ZFS_COMPRESSED
+};
+
+void ZfsCompressedArcMeter_readStats(Meter* this, ZfsArcStats* stats) {
+   if ( stats->isCompressed ) {
+      this->total = stats->uncompressed;
+      this->values[0] = stats->compressed;
+   } else {
+      // For uncompressed ARC, report 1:1 ratio
+      this->total = stats->size;
+      this->values[0] = stats->size;
+   }
+}
+
+static void ZfsCompressedArcMeter_printRatioString(Meter* this, char* buffer, int size) {
+   xSnprintf(buffer, size, "%.2f:1", this->total/this->values[0]);
+}
+
+static void ZfsCompressedArcMeter_updateValues(Meter* this, char* buffer, int size) {
+   Platform_setZfsCompressedArcValues(this);
+
+   ZfsCompressedArcMeter_printRatioString(this, buffer, size);
+}
+
+static void ZfsCompressedArcMeter_display(Object* cast, RichString* out) {
+   char buffer[50];
+   Meter* this = (Meter*)cast;
+
+   if (this->values[0] > 0) {
+      Meter_humanUnit(buffer, this->total, 50);
+      RichString_append(out, CRT_colors[METER_VALUE], buffer);
+      RichString_append(out, CRT_colors[METER_TEXT], " Uncompressed, ");
+      Meter_humanUnit(buffer, this->values[0], 50);
+      RichString_append(out, CRT_colors[METER_VALUE], buffer);
+      RichString_append(out, CRT_colors[METER_TEXT], " Compressed, ");
+      ZfsCompressedArcMeter_printRatioString(this, buffer, 50);
+      RichString_append(out, CRT_colors[METER_VALUE], buffer);
+      RichString_append(out, CRT_colors[METER_TEXT], " Ratio");
+   } else {
+      RichString_write(out, CRT_colors[METER_TEXT], " ");
+      RichString_append(out, CRT_colors[FAILED_SEARCH], "Compression Unavailable");
+   }
+}
+
+MeterClass ZfsCompressedArcMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = ZfsCompressedArcMeter_display,
+   },
+   .updateValues = ZfsCompressedArcMeter_updateValues,
+   .defaultMode = TEXT_METERMODE,
+   .maxItems = 1,
+   .total = 100.0,
+   .attributes = ZfsCompressedArcMeter_attributes,
+   .name = "ZFSCARC",
+   .uiName = "ZFS CARC",
+   .description = "ZFS CARC: Compressed ARC statistics",
+   .caption = "ARC: "
+};
diff --git a/zfs/ZfsCompressedArcMeter.h b/zfs/ZfsCompressedArcMeter.h
new file mode 100644
index 0000000..5afcc99
--- /dev/null
+++ b/zfs/ZfsCompressedArcMeter.h
@@ -0,0 +1,22 @@
+/* Do not edit this file. It was automatically generated. */
+
+#ifndef HEADER_ZfsCompressedArcMeter
+#define HEADER_ZfsCompressedArcMeter
+/*
+htop - ZfsCompressedArcMeter.h
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPL, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "ZfsArcStats.h"
+
+#include "Meter.h"
+
+extern int ZfsCompressedArcMeter_attributes[];
+
+void ZfsCompressedArcMeter_readStats(Meter* this, ZfsArcStats* stats);
+
+extern MeterClass ZfsCompressedArcMeter_class;
+
+#endif
diff --git a/zfs/openzfs_sysctl.c b/zfs/openzfs_sysctl.c
index ceee4d1..c1ab223 100644
--- a/zfs/openzfs_sysctl.c
+++ b/zfs/openzfs_sysctl.c
@@ -20,6 +20,8 @@ static int MIB_kstat_zfs_misc_arcstats_mru_size[5];
 static int MIB_kstat_zfs_misc_arcstats_anon_size[5];
 static int MIB_kstat_zfs_misc_arcstats_hdr_size[5];
 static int MIB_kstat_zfs_misc_arcstats_other_size[5];
+static int MIB_kstat_zfs_misc_arcstats_compressed_size[5];
+static int MIB_kstat_zfs_misc_arcstats_uncompressed_size[5];
 
 /*{
 #include "zfs/ZfsArcStats.h"
@@ -41,6 +43,12 @@ void openzfs_sysctl_init(ZfsArcStats *stats) {
                   sysctlnametomib("kstat.zfs.misc.arcstats.anon_size", MIB_kstat_zfs_misc_arcstats_anon_size, &len);
                   sysctlnametomib("kstat.zfs.misc.arcstats.hdr_size", MIB_kstat_zfs_misc_arcstats_hdr_size, &len);
                   sysctlnametomib("kstat.zfs.misc.arcstats.other_size", MIB_kstat_zfs_misc_arcstats_other_size, &len);
+                  if (sysctlnametomib("kstat.zfs.misc.arcstats.compressed_size", MIB_kstat_zfs_misc_arcstats_compressed_size, &len) == 0) {
+                     stats->isCompressed = 1;
+                     sysctlnametomib("kstat.zfs.misc.arcstats.uncompressed_size", MIB_kstat_zfs_misc_arcstats_uncompressed_size, &len);
+                  } else {
+                     stats->isCompressed = 0;
+                  }
    } else {
       stats->enabled = 0;
    }
@@ -77,5 +85,15 @@ void openzfs_sysctl_updateArcStats(ZfsArcStats *stats) {
       len = sizeof(stats->other);
       sysctl(MIB_kstat_zfs_misc_arcstats_other_size, 5, &(stats->other), &len , NULL, 0);
       stats->other /= 1024;
+
+      if (stats->isCompressed) {
+         len = sizeof(stats->compressed);
+         sysctl(MIB_kstat_zfs_misc_arcstats_compressed_size, 5, &(stats->compressed), &len , NULL, 0);
+         stats->compressed /= 1024;
+
+         len = sizeof(stats->uncompressed);
+         sysctl(MIB_kstat_zfs_misc_arcstats_uncompressed_size, 5, &(stats->uncompressed), &len , NULL, 0);
+         stats->uncompressed /= 1024;
+      }
    }
 }
-- 
2.20.1