RHEL Kernel Performance Optimization, Characterization ... - Red Hat

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64bit /proc//maps# cat /proc/2345/maps004000000100b000 rxp 00000000 fd:00 1933328 /usr/sybase/ASE12_5/bin/dataserver.esd30110b00001433000 rwp 00c0b000 fd:00 1933328 /usr/sybase/ASE12_5/bin/dataserver.esd301433000014eb000 rwxp 01433000 00:00 04000000040001000 p 40000000 00:00 04000100040a01000 rwxp 40001000 00:00 02a95f730002a96073000 p 0012b000 fd:00 819273/lib64/tls/libc2.3.4.so2a960730002a96075000 rp 0012b000 fd:00 819273/lib64/tls/libc2.3.4.so2a960750002a96078000 rwp 0012d000 fd:00 819273/lib64/tls/libc2.3.4.so2a960780002a9607e000 rwp 2a96078000 00:00 02a9607e0002a98c3e000 rws 00000000 00:06 360450/SYSV0100401e (deleted)2a98c3e0002a98c47000 rwp 2a98c3e000 00:00 02a98c470002a98c51000 rxp 00000000 fd:00 819227/lib64/libnss_files2.3.4.so2a98c510002a98d51000 p 0000a000 fd:00 819227/lib64/libnss_files2.3.4.so2a98d510002a98d53000 rwp 0000a000 fd:00 819227/lib64/libnss_files2.3.4.so2a98d530002a98d57000 rxp 00000000 fd:00 819225/lib64/libnss_dns2.3.4.so2a98d570002a98e56000 p 00004000 fd:00 819225/lib64/libnss_dns2.3.4.so2a98e560002a98e58000 rwp 00003000 fd:00 819225/lib64/libnss_dns2.3.4.so2a98e580002a98e69000 rxp 00000000 fd:00 819237/lib64/libresolv2.3.4.so2a98e690002a98f69000 p 00011000 fd:00 819237/lib64/libresolv2.3.4.so2a98f690002a98f6b000 rwp 00011000 fd:00 819237/lib64/libresolv2.3.4.so2a98f6b0002a98f6d000 rwp 2a98f6b000 00:00 035c7e0000035c7e08000 rxp 00000000 fd:00 819469/lib64/libpam.so.0.7735c7e0800035c7f08000 p 00008000 fd:00 819469/lib64/libpam.so.0.7735c7f0800035c7f09000 rwp 00008000 fd:00 819469/lib64/libpam.so.0.7735c800000035c8011000 rxp 00000000 fd:00 819468/lib64/libaudit.so.0.0.035c801100035c8110000 p 00011000 fd:00 819468/lib64/libaudit.so.0.0.035c811000035c8118000 rwp 00010000 fd:00 819468/lib64/libaudit.so.0.0.035c900000035c900b000 rxp 00000000 fd:00 819457/lib64/libgcc_s3.4.420050721.so.135c900b00035c910a000 p 0000b000 fd:00 819457/lib64/libgcc_s3.4.420050721.so.135c910a00035c910b000 rwp 0000a000 fd:00 819457/lib64/libgcc_s3.4.420050721.so.17fbfff10007fc0000000 rwxp 7fbfff1000 00:00 0ffffffffff600000ffffffffffe00000 p 00000000 00:00 0
proc/vmstat(<strong>RHEL</strong>4/<strong>RHEL</strong>5)cat /proc/vmstatnr_anon_pages 98893nr_mapped 20715nr_file_pages 120855nr_slab 23060nr_page_table_pages 5971nr_dirty 21nr_writeback 0nr_unstable 0nr_bounce 0numa_hit 996729666numa_miss 0numa_foreign 0numa_interleave 87657numa_local 996729666numa_other 0pgpgin 2577307pgpgout 106131928pswpin 0pswpout 34pgalloc_dma 198908pgalloc_dma32 997707549pgalloc_normal 0pgalloc_high 0pgfree 997909734pgactivate 1313196pgdeactivate 470908pgfault 2971972147pgmajfault 8047.CONTINUED...pgrefill_dma 18338pgrefill_dma32 1353451pgrefill_normal 0pgrefill_high 0pgsteal_dma 0pgsteal_dma32 0pgsteal_normal 0pgsteal_high 0pgscan_kswapd_dma 7235pgscan_kswapd_dma32 417984pgscan_kswapd_normal 0pgscan_kswapd_high 0pgscan_direct_dma 12pgscan_direct_dma32 1984pgscan_direct_normal 0pgscan_direct_high 0pginodesteal 166slabs_scanned 1072512kswapd_steal 410973kswapd_inodesteal 61305pageoutrun 7752allocstall 29pgrotated 73
Page 1 and 2: RHEL Kernel Performance Optimizatio
Page 3 and 4: Section 1 System Overview Proces
Page 5 and 6: Processor typesUniProcessorSymmet
Page 7 and 8: AMD64 System Numa Memory LayoutS1S2
Page 9: Physical Memory Supported/TestedRHE
Page 13 and 14: IncomesExpendituresDonkey owned 0.7
Page 15 and 16: Perzone page lists Active List
Page 17 and 18: Per NUMANode ResourcesMemory zone
Page 19 and 20: Virtual Address Space Maps 32bit
Page 21 and 22: Linux 32bit Address Space(Hugemem
Page 23 and 24: Memory Pressure32 bitDMA Normal H
Page 25 and 26: User Memory PressureAnonymous/pagec
Page 27 and 28: PageCache/Anonymous memory split(Co
Page 29 and 30: 64bit Memory ReclamationRAMKernel
Page 31 and 32: Per Node/Zone Paging DynamicsUser A
Page 33 and 34: Buffered file system writeMemorycop
Page 35 and 36: Section 2 Analyzing System Perfo
Page 37 and 38: Red Hat Top ToolsCPU ToolsMemory To
Page 39 and 40: vmstat(paging vs swapping)vmstat 10
Page 41 and 42: iostat x of same IOzone EXT3 file
Page 43 and 44: free/numastat - memory allocation[r
Page 45 and 46: pstreeinit ─┬─/usr/bin/sealer
Page 47 and 48: The /proc filesystem /proc●meminf
Page 49 and 50: proc/slabinfoslabinfo version: 2
Page 51: 32bit /proc//maps[root@dhcp8336
Page 55 and 56: Alt Sysrq M - RHEL3/NUMASysRq : Sho
Page 57 and 58: Alt Sysrq M - RHEL4 & 5/NUMAFree pa
Page 59 and 60: Alt Sysrq W and PSysRq : Show CPUsC
Page 61 and 62: oprofile - opcontrol and opreport c
Page 63 and 64: Profiling Tools: SystemTapTechnolog
Page 65 and 66: New Tuning Tools w/ RH MRGMRG Tunin
Page 67 and 68: Tuning how to set kernel paramet
Page 69 and 70: OOM kills - swap space exhaustion(R
Page 71 and 72: OOM kills - lowmem consumption(RHEL
Page 73 and 74: Eliminating OOMkillsRHEL3●/proc/s
Page 75 and 76: Performance Tuning - (RHEL3) /proc/
Page 77 and 78: RHEL3 /proc/sys/vm/pagecachepagecac
Page 79 and 80: Performance Tuning - (RHEL4 and RHE
Page 81 and 82: RHEL4&5 /proc/sys/vm/min_free_kbyte
Page 83 and 84: RHEL4&5 /proc/sys/vm/dirty_ratioAbs
Page 85 and 86: dirty_ratio and dirty_background_ra
Page 87 and 88: Pagecache TuningFilesystem/pagecach
Page 89 and 90: (Hint)flushing the slabcache[tmp]#
Page 91 and 92: x86●RHEL4 kernel selectionStandar
Page 93 and 94: Problem 16GB x86 running SMP ker
Page 95 and 96: Linux at 16cpus quadcore and b
Page 97 and 98: Asynchronous I/O CharacteristicsR4
Page 99 and 100: Disk IO tuning RHEL4/5RHEL4/5 -
Page 101 and 102: Optimizing File System PerformanceU
Page 103 and 104:
McCalpin Streams Copy Bandwidth (1,
Page 105 and 106:
RHEL4&5 NUMAstat and NUMActlEXAMPLE
Page 107 and 108:
RHEL5.2 CPUspeed and performance:En
Page 109 and 110:
Effects of CPUspeed with RHEL5.2 Vi
Page 111 and 112:
EXT3, GFS, NFS Iozone w/ DirectIORH
Page 113 and 114:
Using HugeTLBfs w/ DatabasesRHEL4+5
Page 115 and 116:
Tuning Network Apps Messages/sec Di
Page 117 and 118:
RT Peformance of Network Apps Messa
Page 119 and 120:
General Performance Tuning Guidelin
Page 121 and 122:
Linux Performance Tuning References
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RHEL Kernel Performance Optimization, Characterization ... - Red Hat

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