Collaborate vdb performance
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The document summarizes performance testing of database virtualization using Delphix. It describes: 1) Benchmarking OLTP and DSS workloads on original vs virtualized databases, finding similar performance. 2) Testing 2 concurrent original databases vs 2 virtualized databases sharing blocks, again with similar results. 3) Tools for monitoring database, storage, and network performance including scripts for Oracle I/O profiling (oramon.sh) and benchmarking disks and network throughput (fio.sh and netio).
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Collaborate vdb performance
- 1. Performance boosting with Database Virtualization Kyle Hailey http://dboptimizer.com
- 2. • Technology • Full Cloning • Thin Provision Cloning • Database Virtualization • IBM & Delphix Benchmark • OLTP • DSS • Concurrent databases • Problems, Solutions, Tools • Oracle • Network • I/O
- 3. Problem Reports Production First copy QA and UAT • CERN - European Organization for Nuclear Research Developers • 145 TB database • 75 TB growth each year • Dozens of developers want copies.
- 4. 99% of blocks are Identical Clone 1 Clone 2 Clone 3
- 6. Thin Provision Clone 1 Clone 2 Clone 3
- 7. 2. Thin Provision Cloning I. clonedb II. Copy on Write a) EMC BCV b) EMC SRDF c) Vmware III. Allocate on Write a) Netapp (EMC VNX) b) ZFS c) DxFS
- 8. I. clonedb dNFS RMAN sparse file backup
- 9. III. Allocate on Write a) Netapp Target A Production Flexclone Snap mirror Database Clone 1 clones NetApp Filer NetApp Filer snapshot snapshot Target B Database Luns Clone 2 Snapshot Manager for Oracle Target C File system level Clone 3 Clone 4
- 10. III. Allocate on Write b) ZFS Target A 1. physical Clone 1 ZFS Storage Appliance NFS RMAN Snapshot Clone 1 Copy to NFS mount RMAN copy Oracle ZFS Appliance + RMAN
- 11. Review : Part I 1. Full Cloning 2. Thin Provision I. clonedb II. Copy on Write III. Allocate on Write a) Netapp ( also EMC VNX) b) ZFS c) DxFS 3. Database Virtualization SMU Delphix
- 12. Virtualization Virtualization Layer SMU 12
- 13. Virtualization Layer SMU x86 hardware Allocate Storage Any type Could be Netapp But Netapp not automated Netapp AFAIK doesn’t shared blocks in memory
- 14. One time backup of source database Production Instance RMAN APIs Database File system
- 15. Delphix Compress Data Production Instance Database File system Data is compressed typically 1/3 size
- 16. Incremental forever change collection Production Changes are collected Instance automatically forever Data older than retention widow freed Database File system
- 17. Typical Architecture Production Development QA UAT Instance Instance Instance Instance Database Database Database Database File system File system File system File system
- 18. Clones share duplicate blocks Source Database Clone Copies of Source Database Production Development QA UAT Instance Instance Instance Instance NFS vDatabase vDatabase Database vDatabase File system Fiber Channel
- 19. Benchmark IBM 3690 X5 Intel Xeon E7 @ 2.00 GHz 2 sockets 10 cores, 256 GB RAM EMC clariion CX4-120 3GB memory read cache, 600MB write cache 5 366GB Seagate ST314635 CLAR146 disks on 4GB Fiber Channel
- 20. Database Virtualization 200GB layer Cache 3GB 3GB cache cache 200GB 200GB Database Database
- 21. Both Databases 200GB Share same cache Cache
- 23. Tests with Swingbench • OLTP on original vs virtual • OLTP on 2 original vs 2 virtual • DSS on original vs virtual • DSS on 2 virtual
- 24. IBM 3690 256GM RAM Vmware ESX 5.1 Install Vmware 5.1
- 25. IBM 3690 256GM RAM Vmware ESX 5.1 EMC Clariion 5 Disks striped 8Gb FC
- 26. IBM 3690 256GM RAM Vmware ESX 5.1 1. Create Linux host • RHEL 6.2 2. Install Oracle 11.2.0.3 Oracle 11.2.0.3 Linux Source 20GB 4 vCPU
- 27. IBM 3690 256GM RAM Vmware ESX 5.1 1. Create 180 GB Swingbench database Oracle 11.2.0.3 Linux Source 20GB 4 vCPU Swingbench 60 GB dataset 180 GB datafiles
- 28. IBM 3690 256GM RAM Vmware ESX 5.1 1. Install Delphix 192GB RAM Delphix 192 GB RAM 4 vCPU Linux Source 20GB 4 vCPU
- 29. IBM 3690 256GM RAM Vmware ESX 5.1 1. Link to Source Database (copy is compressed by Delphix 192 GB RAM 4 vCPU 1/3 on average) RMAN API Linux Source 20GB 4 vCPU
- 30. Original IBM 3690 256GM RAM Vmware ESX 5.1 Delphix 192 GB RAM 4vCPU Linux Source 20GB 4 vCPU Linux Target 20GB 4 vCPU 1. Provision a “virtual database” on target LINUX
- 31. Benchmark setup ready IBM 3690 256GM RAM Vmware ESX 5.1 Delphix 192 GB RAM 4vCPU Linux Source 20GB 4 vCPU Linux Target 20GB 4 vCPU Run “physical” Run “virtual” benchmark on source benchmark on target database virtual database
- 32. charbench -cs 172.16.101.237:1521:ibm1 # machine:port:SID -dt thin # driver -u soe # username -p soe # password -uc 100 # user count -min 10 # min think time -max 200 # max think time -rt 0:1 # run time -a # run automatic -v users,tpm,tps # collect statistics http://dominicgiles.com/commandline.html
- 33. Author : Dominic Giles Version : 2.4.0.845 Results will be written to results.xml. Time Users TPM TPS 3:11:51 PM [0/30] 0 0 3:11:52 PM [30/30] 49 49 3:11:53 PM [30/30] 442 393 3:11:54 PM [30/30] 856 414 3:11:55 PM [30/30] 1146 290 3:11:56 PM [30/30] 1355 209 3:11:57 PM [30/30] 1666 311 3:11:58 PM [30/30] 2015 349 3:11:59 PM [30/30] 2289 274 3:12:00 PM [30/30] 2554 265 3:12:01 PM [30/30] 2940 386 3:12:02 PM [30/30] 3208 268 3:12:03 PM [30/30] 3520 312 3:12:04 PM [30/30] 3835 315
- 34. Transactions Per Minute (TPM) OLTP physical vs virtual, cold cache Users
- 35. OLTP physical vs virtual , warm cache Transactions Per Minute (TPM) Users
- 36. Part Two: 2 physical vs 2 virtual Vmware ESX 5.1 IBM 3690 256GM RAM Delphix 192 GB RAM Linux Source 20GB Linux Target 20GB Linux Source 20GB Linux Target 20GB • 2 Source databases • 2 virtual database that share the same common blocks
- 37. 2 concurrent: Physical Vs Virtual Users
- 38. seconds Physical vs Virtual : Full Table Scans (DSS)
- 39. Two virtual databases : Full Table Scans seconds
- 40. Problems swingbench connections time out rm /dev/random ln -s /dev/urandom /dev/random couldn’t connect via listener Services iptables stop Chkconfig iptables off Iptables –F Service iptables save
- 41. Tools : on Github • Oracle – oramon.sh – Oracle I/O latency – moats.sql – Oracle Monitor, Tanel Poder • I/O – fio.sh – benchmark disks – ioh.sh – show nfs, zfs, io latency, throughput • Network – netio – benchmark network (not on github) • Netperf • ttcp – tcpparse.sh – parse tcpdumps http://github.com/khailey
- 42. MOATS: The Mother Of All Tuning Scripts v1.0 by Adrian Billington & Tanel Poder http://www.oracle-developer.net & http://www.e2sn.com MOATS + INSTANCE SUMMARY ------------------------------------------------------------------------------------------+ | Instance: V1 | Execs/s: 3050.1 | sParse/s: 205.5 | LIOs/s: 28164.9 | Read MB/s: 46.8 | | Cur Time: 18-Feb 12:08:22 | Calls/s: 633.1 | hParse/s: 9.1 | PhyRD/s: 5984.0 | Write MB/s: 12.2 | | History: 0h 0m 39s | Commits/s: 446.7 | ccHits/s: 3284.6 | PhyWR/s: 1657.4 | Redo MB/s: 0.8 | +------------------------------------------------------------------------------------------------------------+ | event name avg ms 1ms 2ms 4ms 8ms 16ms 32ms 64ms 128ms 256ms 512ms 1s 2s+ 4s+ | | db file scattered rea .623 1 | | db file sequential re 1.413 13046 8995 2822 916 215 7 1 | | direct path read 1.331 25 13 3 1 | | direct path read temp 1.673 | | direct path write 2.241 15 12 14 3 | | direct path write tem 3.283 | | log file parallel wri | | log file sync | + TOP SQL_ID (child#) -----+ TOP SESSIONS ---------+ + TOP WAITS -------------------------+ WAIT CLASS -+ | 19% | () | | | 60% | db file sequential read | User I/O | | 19% | c13sma6rkr27c (0) | 245,147,374,386,267 | | 17% | ON CPU | ON CPU | | 17% | bymb3ujkr3ubk (0) | 131,10,252,138,248 | | 15% | log file sync | Commit | | 9% | 8z3542ffmp562 (0) | 133,374,252,250 | | 6% | log file parallel write | System I/O | | 9% | 0yas01u2p9ch4 (0) | 17,252,248,149 | | 2% | read by other session | User I/O | +--------------------------------------------------+ +--------------------------------------------------+ + TOP SQL_ID ----+ PLAN_HASH_VALUE + SQL TEXT ---------------------------------------------------------------+ | c13sma6rkr27c | 2583456710 | SELECT PRODUCTS.PRODUCT_ID, PRODUCT_NAME, PRODUCT_DESCRIPTION, CATEGORY | | | | _ID, WEIGHT_CLASS, WARRANTY_PERIOD, SUPPLIER_ID, PRODUCT_STATUS, LIST_P | + ---------------------------------------------------------------------------------------------------------- + | bymb3ujkr3ubk | 494735477 | INSERT INTO ORDERS(ORDER_ID, ORDER_DATE, CUSTOMER_ID, WAREHOUSE_ID) VAL | | | | UES (ORDERS_SEQ.NEXTVAL + :B3 , SYSTIMESTAMP , :B2 , :B1 ) RETURNING OR | + ---------------------------------------------------------------------------------------------------------- + | 8z3542ffmp562 | 1655552467 | SELECT QUANTITY_ON_HAND FROM PRODUCT_INFORMATION P, INVENTORIES I WHERE | | | | I.PRODUCT_ID = :B2 AND I.PRODUCT_ID = P.PRODUCT_ID AND I.WAREHOUSE_ID | + ---------------------------------------------------------------------------------------------------------- + | 0yas01u2p9ch4 | 0 | INSERT INTO ORDER_ITEMS(ORDER_ID, LINE_ITEM_ID, PRODUCT_ID, UNIT_PRICE, | | | | QUANTITY) VALUES (:B4 , :B3 , :B2 , :B1 , 1) | + ---------------------------------------------------------------------------------------------------------- +
- 43. oramon.sh RUN_TIME=-1 COLLECT_LIST= FAST_SAMPLE=iolatency TARGET=172.16.102.209:V2 DEBUG=0 Connected, starting collect at Wed Dec 5 14:59:24 EST 2012 starting stats collecting single block logfile write multi block direct read direct read temp direct write temp ms IOP/s ms IOP/s ms IOP/s ms IOP/s ms IOP/s ms IOP/s 3.53 .72 16.06 .17 4.64 .00 115.37 3.73 .00 0 1.66 487.33 2.66 138.50 4.84 33.00 .00 .00 0 1.71 670.20 3.14 195.00 5.96 42.00 .00 .00 0 2.19 502.27 4.61 136.82 10.74 27.00 .00 .00 0 1.38 571.17 2.54 177.67 4.50 20.00 .00 .00 0 single block logfile write multi block direct read direct read temp direct write temp ms IOP/s ms IOP/s ms IOP/s ms IOP/s ms IOP/s ms IOP/s 3.22 526.36 4.79 135.55 .00 .00 .00 0 2.37 657.20 3.27 192.00 .00 .00 .00 0 1.32 591.17 2.46 187.83 .00 .00 .00 0 2.23 668.60 3.09 204.20 .00 .00 .00 .00 0
- 44. Benchmark : network and I/O Oracle NFS TCP Network netio TCP NFS Cache/SAN Fibre Channel fio.sh Cache/spindle
- 45. netio Server netio –t –s Client netio –t server_name Client send receive Packet size 1k bytes: 51.30 MByte/s Tx, 6.17 MByte/s Rx. Packet size 2k bytes: 100.10 MByte/s Tx, 12.29 MByte/s Rx. Packet size 4k bytes: 96.48 MByte/s Tx, 18.75 MByte/s Rx. Packet size 8k bytes: 114.38 MByte/s Tx, 30.41 MByte/s Rx. Packet size 16k bytes: 112.20 MByte/s Tx, 19.46 MByte/s Rx. Packet size 32k bytes: 114.53 MByte/s Tx, 35.11 MByte/s Rx.
- 46. netperf.sh mss: 1448 local_recv_size (beg,end): 128000 128000 local_send_size (beg,end): 49152 49152 remote_recv_size (beg,end): 87380 3920256 remote_send_size (beg,end): 16384 16384 mn_ms av_ms max_ms s_KB r_KB r_MB/s s_MB/s <100u <500u <1ms <5ms <10ms <50ms <100m <1s >1s p90 p99 .08 .12 10.91 15.69 83.92 .33 .38 .01 .01 .12 .54 .10 .16 12.25 8 48.78 99.10 .30 .82 .07 .08 .15 .57 .10 .14 5.01 8 54.78 99.04 .88 .96 .15 .60 .22 .34 63.71 128 367.11 97.50 1.57 2.42 .06 .07 .01 .35 .93 .43 .60 16.48 128 207.71 84.86 11.75 15.04 .05 .10 .90 1.42 .99 1.30 412.42 1024 767.03 .05 99.90 .03 .08 .03 1.30 2.25 1.77 2.28 15.43 1024 439.20 99.27 .64 .73 2.65 5.35
- 47. fio.sh test users size MB ms IOPS 50us 1ms 4ms 10ms 20ms 50ms .1s 1s 2s 2s+ read 1 8K r 28.299 0.271 3622 99 0 0 0 read 1 32K r 56.731 0.546 1815 97 1 1 0 0 0 read 1 128K r 78.634 1.585 629 26 68 3 1 0 0 read 1 1M r 91.763 10.890 91 14 61 14 8 0 0 read 8 1M r 50.784 156.160 50 3 25 31 38 2 read 16 1M r 52.895 296.290 52 2 24 23 38 11 read 32 1M r 55.120 551.610 55 0 13 20 34 30 read 64 1M r 58.072 1051.970 58 3 6 23 66 0 randread 1 8K r 0.176 44.370 22 0 1 5 2 15 42 20 10 randread 8 8K r 2.763 22.558 353 0 2 27 30 30 6 1 randread 16 8K r 3.284 37.708 420 0 2 23 28 27 11 6 randread 32 8K r 3.393 73.070 434 1 20 24 25 12 15 randread 64 8K r 3.734 131.950 478 1 17 16 18 11 33 write 1 1K w 2.588 0.373 2650 98 1 0 0 0 write 1 8K w 26.713 0.289 3419 99 0 0 0 0 write 1 128K w 11.952 10.451 95 52 12 16 7 10 0 0 0 write 4 1K w 6.684 0.581 6844 90 9 0 0 0 0 write 4 8K w 15.513 2.003 1985 68 18 10 1 0 0 0 write 4 128K w 34.005 14.647 272 0 34 13 25 22 3 0 write 16 1K w 7.939 1.711 8130 45 52 0 0 0 0 0 0 write 16 8K w 10.235 12.177 1310 5 42 27 15 5 2 0 0 write 16 128K w 13.212 150.080 105 0 0 3 10 55 26 0 2
- 50. ß
- 51. Measurements Oracle oramon.sh NFS TCP Network TCP NFS ioh.sh ZFS Cache/spindle Fibre Channel Cache/spindle
- 52. ioh.sh date: 1335282287 , 24/3/2012 15:44:47TCP out: 8.107 MB/s, in: 5.239 MB/s, retrans: MB/s ip discards: ---------------- | MB/s| avg_ms| avg_sz_kb| count ------------|-----------|----------|----------|-------------------- R| io:| 0.005 | 24.01 | 4.899 | 1 Cache/SAN R | zfs:| 7.916 | 0.05 | 7.947 | 1020 C | nfs_c:| | | | . ZFS R | nfs:| 7.916 | 0.09 | 8.017 | 1011 NFS - W| io:| 9.921 | 11.26 | 32.562 | 312 Cache/SAN W | zfssync:| 5.246 | 19.81 | 11.405 | 471 W | zfs:| 0.001 | 0.05 | 0.199 | 3 ZFS W | nfs:| | | | . W |nfssyncD:| 5.215 | 19.94 | 11.410 | 468 NFS W |nfssyncF:| 0.031 | 11.48 | 16.000 | 2
- 53. LINUX Solaris ms ms Oracle Oracle 58 47 NFS NFS /TCP ? ? TCP Network ? ? TCP/NFS ? ? Network TCP NFS .1 2 NFS server Cache/SAN Fibre Channel Cache/spindle
- 54. Oracle snoop / tcpdump TCP Network snoop TCP NFS Virtualiation layer NFS Server
- 55. Wireshark : analyze TCP dumps • yum install wireshark • wireshark + perl – find common NFS requests • NFS client • NFS server – display times for • NFS Client • NFS Server • Delta https://github.com/khailey/tcpdump/blob/master/parsetcp.pl
- 56. Parsing nfs server trace: nfs_server.cap type avg ms count READ : 44.60, 7731 Parsing client trace: client.cap type avg ms count READ : 46.54, 15282 ==================== MATCHED DATA ============ READ type avg ms server : 48.39, client : 49.42, diff : 1.03, Processed 9647 packets (Matched: 5624 Missed: 4023)
- 57. Parsing NFS server trace: nfs_server.cap type avg ms count READ : 1.17, 9042 Parsing client trace: client.cap type avg ms count READ : 1.49, 21984 ==================== MATCHED DATA ============ READ type avg ms count server : 1.03 client : 1.49 diff : 0.46
- 58. Oracle on Oracle latency data tool Linux on Solaris source “db file sequential read” wait (which is basically a Oracle Oracle 58 ms 47 ms oramon.sh timing of “pread” for 8k random reads specifically NFS TCP trace tcpdump on TCP NFS 1.5 45 ms tcpparse.sh LINUX snoop on Solaris Client Network network 0.5 1 ms Delta TCP trace TCP tcpparse.sh NFS 1 ms 44 ms snoop Server NFS dtrace nfs:::op-read- NFS .1 ms 2 ms DTrace start/op-read-done Server
- 59. Issues: LINUX rpc queue On LINUX, in /etc/sysctl.conf modify sunrpc.tcp_slot_table_entries = 128 then do sysctl -p then check the setting using sysctl -A | grep sunrpc NFS partitions will have to be unmounted and remounted Not persistent across reboot
- 60. Issues: Solaris NFS Server threads sharectl get -p servers nfs sharectl set -p servers=512 nfs svcadm refresh nfs/server
- 61. Linux tools: iostat.py $ ./iostat.py -1 172.16.100.143:/vdb17 mounted on /mnt/external: op/s rpc bklog 4.20 0.00 read: ops/s kB/s kB/op retrans avg RTT (ms) avg exe (ms) 0.000 0.000 0.000 0 (0.0%) 0.000 0.000 write: ops/s kB/s kB/op retrans avg RTT (ms) avg exe (ms) 0.000 0.000 0.000 0 (0.0%) 0.000 0.000
- 62. Memory Prices • EMC sells $1000/GB • X86 memory $30/1GB • TB RAM on a x86 costs around $32,000 • TB RAM on a VMAX 40k costs around $1,000,000
- 63. Memory on Hosts 200GB 200GB 200GB 200GB 200GB
- 64. Memory on SAN 1000 GB
- 65. Memory on Virtualization Layer 200GB
- 66. Memory Location vs Price vs Perf memory price speed Hosts 1000 GB $32K < 1us Off load SAN Virtual 200 GB $6K < 500us Off load SAN layer Shared disk fast clone SAN 1000 GB $1000K < 100us 72% of all Delphix customers are on 1TB or below databases Of the databases buffer cache represents 0.5% of database size, 5GB
- 67. Leverage new solid state storage more efficiently Vmware ESX 5.1 IBM 3690 256GM RAM Delphix 192 GB RAM Linux Source 20GB Linux Target 20GB Linux Source 20GB Linux Target 20GB Smaller space
- 68. Oracle 12c
- 69. 80MB buffer cache ?
- 70. with 5000 Tnxs / min Latency 300 ms 1 5 10 20 30 60 100 200 1 5 10 20 30 60 100 200 Users
- 71. 200GB Cache
- 72. 5000 Tnxs / min Latency 300 ms 1 5 10 20 30 60 100 200 1 5 10 20 30 60 100 200 Users
- 73. 200GB Cache
- 74. 8000 Tnxs / min Latency 600 ms 1 5 10 20 30 60 100 200 1 5 10 20 30 60 100 200 Users
Hinweis der Redaktion
- Prod critical for businessPerformance of prod is highest priorityProtect prod from any extra load
- Fastest query is the query not run
- Performance issuesSingle point in time
- Oracle Database Cloning Solution Using Oracle Recovery Manager and Sun ZFS Storage Appliancehttp://www.oracle.com/technetwork/articles/systems-hardware-architecture/cloning-solution-353626.pdf
- Database virtualization is to the data tier whatVMware is to the compute tier. On the compute tier VMware allows the same hardware to be shared by multiple machines. On the data tier virtualization allows the same datafiles to be shared by multiple clones allowing almost instantaneous creation of new copies of databases with almost no disk footprint.
- 250 pdb x 200 GB = 50 TBEMC sells 1GB$1000Dell sells 32GB $1,000.terabyte of RAM on a Dell costs around $32,000terabyte of RAM on a VMAX 40k costs around $1,000,000.
- Most of swingbench's parameters can be changed from the command line. That is to say, the swingconfig.xml file (or the other example files in the sample directory) can be used as templates for a run and each runs parameters can be modified from the command line. The -h option lists command line options[dgiles@macbook-2 bin]$ ./charbench -husage: parameters: -D <variable=value> use value for given environment variable -a run automatically -be <stopafter> end recording statistics after. Value is in the form hh:mm -bs <startafter> start recording statistics after. Value is in the form hh:mm -c <filename> specify config file -co <hostname> specify/override coordinator in configuration file. -com <comment> specify comment for this benchmark run (in double quotes) -cpuloc <hostname > specify/overide location of the cpu monitor. -cs <connectstring> override connect string in configuration file -debug turn on debug output -di <shortname(s)> disable transactions(s) by short name, comma separated -dt <drivertype> override driver type in configuration file (thin,oci, ttdirect, ttclient) -en <shortname(s)> enable transactions(s) by short name, comma separated -h,--help print this message -i run interactively (default) -ld <milliseconds> specify/overide the logon delay (milliseconds) -max <milliseconds> override maximum think time in configuration file -min <milliseconds> override minimum think time in configuration file -p <password> override password in configuration file -r <filename> specify results file -rr specify/overide refresh rate for charts in secs -rt <runtime> specify/overide run time for the benchmark. Value is in the form hh:mm -s run silent -u <username> override username in configuration file -uc <number> override user count in configuration file. -v <options> display run statistics (vmstat/sar like output), options include (comma separated no spaces).trans|cpu|disk|dml|tpm|tps|usersThe following examples show how this functionality can be used Example 1.$ > ./swingbench -cs //localhost/DOM102 -dt thin Will start swingbench using the local config file (swingconfig.xml) but overriding its connectstring and driver type. All other values in the file will be used. Example 2.$ > ./swingbench -c sample/ccconfig.xml -cs //localhost/DOM102 -dt thin Will start swingbench using the config file sample/ccconfig.xml and overriding its connectstring and driver type. All other values in the file will be used. Example 3.$ > ./minibench -c sample/soeconfig.xml -cs //localhost/DOM102 -dt thin -uc 50 -min 0 -max 100 -a Will start minibench (a lighter weight frontend) using the config file sample/ccconfig.xml and overriding its connectstring and driver type. It also overrides the user count and think times. The "-a" option starts the run without any user interaction. Example 4.$ > ./charbench -c sample/soeconfig.xml -cs //localhost/DOM102 -dt thin -cpulocoraclelinux -uc 20 -min 0 -max 100 -a -v users,tpm,tps,cpuAuthor : Dominic GilesVersion : 2.3.0.344Results will be written to results.xml.Time Users TPM TPS User System Wait Idle5:08:19 PM 0 0 0 0 0 0 05:08:21 PM 3 0 0 4 4 3 895:08:22 PM 8 0 0 4 4 3 895:08:23 PM 12 0 0 4 4 3 895:08:24 PM 16 0 0 8 43 0 495:08:25 PM 20 0 0 8 43 0 495:08:26 PM 20 2 2 8 43 0 495:08:27 PM 20 29 27 8 43 0 495:08:28 PM 20 49 20 53 34 1 12Will start charbench (a character based version of swingbench) using the config file sample/ccconfig.xml and overriding its connectstring and driver type. It also overrides the user count and think times. The "-a" option starts the run without any user interaction. This example also connects to the cpumonitor (started previously). It uses the -v option to continually display cpu load information. Example 5.$ > ./minibench -c sample/soeconfig.xml -cs //localhost/DOM102 -cpuloclocalhost -co localhostWill start minibench using the config file sample/ccconfig.xml and overriding its connectstring. It also specifies a cpu monitor started locally on the machine and attaches to a coordinator process also started on the local machine. Example 6.$ > ./minibench -c sample/soeconfig.xml -cs //localhost/DOM102 -cpuloclocalhost -rt 1:30 Will start minibench using the config file sample/ccconfig.xml and overriding its connectstring. It also specifies a cpu monitor started locally on the machine. The "-rt" parameter tells swingbench to run for 1 hour 30 and then stop. Example 7.$ > ./coordinator -g$ > ssh -f node1 'cdswingbench/bin;swingbench/bin/cpumonitor';$ > ssh -f node2 'cdswingbench/bin;swingbench/bin/cpumonitor';$ > ssh -f node3 'cdswingbench/bin;swingbench/bin/cpumonitor';$ > ssh -f node4 'cdswingbench/bin;swingbench/bin/cpumonitor';$ > ./minibench -cs //node1/RAC1 -cpulocnode1 -co localhost &$ > ./minibench -cs //node2/RAC2 -cpulocnode2 -co localhost &$ > ./minibench -cs //node3/RAC3 -cpulocnode3 -co localhost &$ > ./minibench -cs //node4/RAC4 -cpulocnode4 -co localhost &$ > ./clusteroverviewIn 2.3 the loadgenerators can use the additional command line option -g to specify which load generation group they are in i.e.$ > ./minibench -cs //node1/RAC1 -cpulocnode1 -co localhost -g group1 &This collection of commands will first start a coordinator in grpahical mode on the local machine. The next 4 commands secure shell to the 4 nodes of a cluster and start a cpumonitor (swingbench needs to be installed on each of them). The following commands start four load generators with the minibench front end each referencing the thecpumonitor started on each database instance, they also attach to the local coordinator. Finally the last command starts clusteroverview (currently its configuration needs to be specified in its config file). Its possible to stop all of the load generators and coordinator with the following command $ > ./coordinator -stop
- Once Last Thinghttp://www.dadbm.com/wp-content/uploads/2013/01/12c_pluggable_database_vs_separate_database.png
- 250 pdb x 200 GB = 50 TBEMC sells 1GB$1000Dell sells 32GB $1,000.terabyte of RAM on a Dell costs around $32,000terabyte of RAM on a VMAX 40k costs around $1,000,000.
- http://www.emc.com/collateral/emcwsca/master-price-list.pdf These prices obtain on pages 897/898:Storage engine for VMAX 40k with 256 GB RAM is around $393,000Storage engine for VMAX 40k with 48 GB RAM is around $200,000So, the cost of RAM here is 193,000 / 208 = $927 a gigabyte. That seems like a good deal for EMC, as Dell sells 32 GB RAM DIMMs for just over $1,000. So, a terabyte of RAM on a Dell costs around $32,000, and a terabyte of RAM on a VMAX 40k costs around $1,000,000.2) Most DBs have a buffer cache that is less than 0.5% (not 5%, 0.5%) of the datafile size.