2015-04-19

Additional charts

Host zm08.stanford.edu: Total CPU

avg(user) = 3.28    avg(sys) = 0.46    avg(idle) = 93.93    avg(iowait) = 2.29    avg(nice) = 0.00    avg(irq) = 0.00    avg(softirq) = 0.03

Host zm08.stanford.edu: Individual CPU user time

avg(cpu0) = 10.30    avg(cpu1) = 9.91    avg(cpu2) = 3.75    avg(cpu3) = 3.36    avg(cpu4) = 2.17    avg(cpu5) = 3.14    avg(cpu6) = 1.37    avg(cpu7) = 1.22    avg(cpu8) = 0.94    avg(cpu9) = 0.84    avg(cpu10) = 0.77    avg(cpu11) = 0.69    avg(cpu12) = 4.43    avg(cpu13) = 3.28    avg(cpu14) = 4.11    avg(cpu15) = 3.87    avg(cpu16) = 7.52    avg(cpu17) = 3.48    avg(cpu18) = 9.89    avg(cpu19) = 1.10    avg(cpu20) = 0.58    avg(cpu21) = 0.79    avg(cpu22) = 0.56    avg(cpu23) = 0.59

Host zm08.stanford.edu: Individual CPU nice time

avg(cpu0) = 0.00    avg(cpu1) = 0.00    avg(cpu2) = 0.00    avg(cpu3) = 0.00    avg(cpu4) = 0.00    avg(cpu5) = 0.00    avg(cpu6) = 0.00    avg(cpu7) = 0.00    avg(cpu8) = 0.00    avg(cpu9) = 0.00    avg(cpu10) = 0.00    avg(cpu11) = 0.00    avg(cpu12) = 0.00    avg(cpu13) = 0.00    avg(cpu14) = 0.00    avg(cpu15) = 0.00    avg(cpu16) = 0.00    avg(cpu17) = 0.00    avg(cpu18) = 0.00    avg(cpu19) = 0.00    avg(cpu20) = 0.00    avg(cpu21) = 0.00    avg(cpu22) = 0.00    avg(cpu23) = 0.00

Host zm08.stanford.edu: Individual CPU sys time

avg(cpu0) = 1.04    avg(cpu1) = 1.00    avg(cpu2) = 0.59    avg(cpu3) = 0.55    avg(cpu4) = 0.38    avg(cpu5) = 0.52    avg(cpu6) = 0.27    avg(cpu7) = 0.22    avg(cpu8) = 0.20    avg(cpu9) = 0.19    avg(cpu10) = 0.15    avg(cpu11) = 0.15    avg(cpu12) = 0.62    avg(cpu13) = 0.49    avg(cpu14) = 0.78    avg(cpu15) = 0.80    avg(cpu16) = 0.53    avg(cpu17) = 0.59    avg(cpu18) = 1.03    avg(cpu19) = 0.23    avg(cpu20) = 0.18    avg(cpu21) = 0.22    avg(cpu22) = 0.14    avg(cpu23) = 0.15

Host zm08.stanford.edu: Individual CPU idle time

avg(cpu0) = 68.65    avg(cpu1) = 68.19    avg(cpu2) = 94.79    avg(cpu3) = 95.14    avg(cpu4) = 97.09    avg(cpu5) = 95.54    avg(cpu6) = 98.23    avg(cpu7) = 98.40    avg(cpu8) = 98.80    avg(cpu9) = 98.87    avg(cpu10) = 99.03    avg(cpu11) = 99.10    avg(cpu12) = 89.90    avg(cpu13) = 90.76    avg(cpu14) = 94.89    avg(cpu15) = 95.11    avg(cpu16) = 91.77    avg(cpu17) = 95.75    avg(cpu18) = 88.82    avg(cpu19) = 98.63    avg(cpu20) = 99.21    avg(cpu21) = 98.86    avg(cpu22) = 99.27    avg(cpu23) = 99.22

Host zm08.stanford.edu: Individual CPU iowait time

avg(cpu0) = 19.83    avg(cpu1) = 20.73    avg(cpu2) = 0.81    avg(cpu3) = 0.89    avg(cpu4) = 0.31    avg(cpu5) = 0.74    avg(cpu6) = 0.11    avg(cpu7) = 0.13    avg(cpu8) = 0.04    avg(cpu9) = 0.09    avg(cpu10) = 0.03    avg(cpu11) = 0.04    avg(cpu12) = 4.97    avg(cpu13) = 5.44    avg(cpu14) = 0.16    avg(cpu15) = 0.16    avg(cpu16) = 0.11    avg(cpu17) = 0.14    avg(cpu18) = 0.10    avg(cpu19) = 0.03    avg(cpu20) = 0.02    avg(cpu21) = 0.11    avg(cpu22) = 0.02    avg(cpu23) = 0.03

Host zm08.stanford.edu: Individual CPU irq time

avg(cpu0) = 0.00    avg(cpu1) = 0.00    avg(cpu2) = 0.00    avg(cpu3) = 0.00    avg(cpu4) = 0.00    avg(cpu5) = 0.00    avg(cpu6) = 0.00    avg(cpu7) = 0.00    avg(cpu8) = 0.00    avg(cpu9) = 0.00    avg(cpu10) = 0.00    avg(cpu11) = 0.00    avg(cpu12) = 0.00    avg(cpu13) = 0.00    avg(cpu14) = 0.00    avg(cpu15) = 0.00    avg(cpu16) = 0.00    avg(cpu17) = 0.00    avg(cpu18) = 0.00    avg(cpu19) = 0.00    avg(cpu20) = 0.00    avg(cpu21) = 0.00    avg(cpu22) = 0.00    avg(cpu23) = 0.00

Host zm08.stanford.edu: Individual CPU softirq time

avg(cpu0) = 0.17    avg(cpu1) = 0.16    avg(cpu2) = 0.06    avg(cpu3) = 0.05    avg(cpu4) = 0.03    avg(cpu5) = 0.06    avg(cpu6) = 0.01    avg(cpu7) = 0.01    avg(cpu8) = 0.01    avg(cpu9) = 0.00    avg(cpu10) = 0.00    avg(cpu11) = 0.00    avg(cpu12) = 0.06    avg(cpu13) = 0.01    avg(cpu14) = 0.04    avg(cpu15) = 0.04    avg(cpu16) = 0.06    avg(cpu17) = 0.04    avg(cpu18) = 0.15    avg(cpu19) = 0.00    avg(cpu20) = 0.00    avg(cpu21) = 0.01    avg(cpu22) = 0.00    avg(cpu23) = 0.00

Host zm08.stanford.edu: Process CPU

avg(mailbox) = 2.42    avg(mysql) = 0.41    avg(stats) = 0.00

Host zm08.stanford.edu: Process Total Memory

avg(mailbox) = 21284.61    avg(mysql) = 18162.10    avg(stats) = 0.00

Host zm08.stanford.edu: Process Resident Memory

avg(mailbox) = 8893.47    avg(mysql) = 17890.48    avg(stats) = 0.00

Host zm08.stanford.edu: Swap Activity

avg(swap in) = 0.00    avg(swap out) = 0.00

Host zm08.stanford.edu: Virtual Memory

avg(swapped) = 12.03    avg(free) = 3279.07    avg(active) = 37767.90    avg(inactive) = 21580.62    avg(page cache) = 28618.87

Host zm08.stanford.edu: Context Switches

avg(context switches) = 5733.53

Host zm08.stanford.edu: Run/Blocked Process Queue Size, Load Average

avg(processes waiting for run time) = 1.41    avg(processes waiting for io time) = 0.94    avg(load average (1 min)) = 1.93

Host zm08.stanford.edu: Disk Utilization (Top 10 avg)

avg(sdf) = 18.26    avg(dm-0) = 2.42    avg(sdg) = 8.83    avg(dm-1) = 10.98    avg(sdl) = 18.28    avg(sdh) = 11.18    avg(dm-4) = 24.82    avg(dm-3) = 14.47    avg(sdm) = 8.82    avg(sdn) = 11.17

Host zm08.stanford.edu: Disk Throughput: /dev/sde

avg(sde read) = 0.19    avg(sde write) = 0.00

Host zm08.stanford.edu: Disk Throughput: /dev/sdf

avg(sdf read) = 785.99    avg(sdf write) = 492.99

Host zm08.stanford.edu: Disk Throughput: /dev/sda

avg(sda read) = 0.19    avg(sda write) = 0.00

Host zm08.stanford.edu: Disk Throughput: /dev/sdk

avg(sdk read) = 22.14    avg(sdk write) = 32.38

Host zm08.stanford.edu: Disk Throughput: /dev/sdt

avg(sdt read) = 0.19    avg(sdt write) = 0.00

Host zm08.stanford.edu: Disk Throughput: /dev/sdq

avg(sdq read) = 0.19    avg(sdq write) = 0.00

Host zm08.stanford.edu: Disk Throughput: /dev/sdj

avg(sdj read) = 0.38    avg(sdj write) = 51.66

Host zm08.stanford.edu: Disk Throughput: /dev/dm-0

avg(dm-0 read) = 447.83    avg(dm-0 write) = 714.49

Host zm08.stanford.edu: Disk Throughput: /dev/sdg

avg(sdg read) = 500.62    avg(sdg write) = 84.73

Host zm08.stanford.edu: Disk Throughput: /dev/dm-1

avg(dm-1 read) = 1000.77    avg(dm-1 write) = 169.48

Host zm08.stanford.edu: Disk Throughput: /dev/dm-2

avg(dm-2 read) = 0.36    avg(dm-2 write) = 104.24

Host zm08.stanford.edu: Disk Throughput: /dev/sdl

avg(sdl read) = 785.70    avg(sdl write) = 492.66

Host zm08.stanford.edu: Disk Throughput: /dev/sdc

avg(sdc read) = 0.19    avg(sdc write) = 0.00

Host zm08.stanford.edu: Disk Throughput: /dev/sdr

avg(sdr read) = 0.19    avg(sdr write) = 0.00

Host zm08.stanford.edu: Disk Throughput: /dev/sds

avg(sds read) = 0.19    avg(sds write) = 0.00

Host zm08.stanford.edu: Disk Throughput: /dev/sdi

avg(sdi read) = 224.16    avg(sdi write) = 357.05

Host zm08.stanford.edu: Disk Throughput: /dev/sdh

avg(sdh read) = 715.21    avg(sdh write) = 0.13

Host zm08.stanford.edu: Disk Throughput: /dev/dm-4

avg(dm-4 read) = 1571.30    avg(dm-4 write) = 985.65

Host zm08.stanford.edu: Disk Throughput: /dev/sdb

avg(sdb read) = 0.19    avg(sdb write) = 0.00

Host zm08.stanford.edu: Disk Throughput: /dev/dm-3

avg(dm-3 read) = 1430.19    avg(dm-3 write) = 0.29

Host zm08.stanford.edu: Disk Throughput: /dev/sdm

avg(sdm read) = 500.54    avg(sdm write) = 84.75

Host zm08.stanford.edu: Disk Throughput: /dev/sdp

avg(sdp read) = 0.38    avg(sdp write) = 52.58

Host zm08.stanford.edu: Disk Throughput: /dev/sdn

avg(sdn read) = 715.37    avg(sdn write) = 0.16

Host zm08.stanford.edu: Disk Throughput: /dev/sdu

avg(sdu read) = 0.19    avg(sdu write) = 0.00

Host zm08.stanford.edu: Disk Throughput: /dev/sdd

avg(sdd read) = 0.19    avg(sdd write) = 0.00

Host zm08.stanford.edu: Disk Throughput: /dev/sdo

avg(sdo read) = 224.06    avg(sdo write) = 357.44

Host zm08.stanford.edu: Disk IOPs: /dev/sde

avg(sde read) = 0.05    avg(sde write) = 0.00

Host zm08.stanford.edu: Disk IOPs: /dev/sdf

avg(sdf read) = 50.71    avg(sdf write) = 20.09

Host zm08.stanford.edu: Disk IOPs: /dev/sda

avg(sda read) = 0.05    avg(sda write) = 0.00

Host zm08.stanford.edu: Disk IOPs: /dev/sdk

avg(sdk read) = 0.87    avg(sdk write) = 1.57

Host zm08.stanford.edu: Disk IOPs: /dev/sdt

avg(sdt read) = 0.05    avg(sdt write) = 0.00

Host zm08.stanford.edu: Disk IOPs: /dev/sdq

avg(sdq read) = 0.05    avg(sdq write) = 0.00

Host zm08.stanford.edu: Disk IOPs: /dev/sdj

avg(sdj read) = 0.09    avg(sdj write) = 0.43

Host zm08.stanford.edu: Disk IOPs: /dev/dm-0

avg(dm-0 read) = 10.46    avg(dm-0 write) = 21.34

Host zm08.stanford.edu: Disk IOPs: /dev/sdg

avg(sdg read) = 29.06    avg(sdg write) = 5.05

Host zm08.stanford.edu: Disk IOPs: /dev/dm-1

avg(dm-1 read) = 58.02    avg(dm-1 write) = 10.10

Host zm08.stanford.edu: Disk IOPs: /dev/dm-2

avg(dm-2 read) = 0.09    avg(dm-2 write) = 0.85

Host zm08.stanford.edu: Disk IOPs: /dev/sdl

avg(sdl read) = 50.71    avg(sdl write) = 20.09

Host zm08.stanford.edu: Disk IOPs: /dev/sdc

avg(sdc read) = 0.05    avg(sdc write) = 0.00

Host zm08.stanford.edu: Disk IOPs: /dev/sdr

avg(sdr read) = 0.05    avg(sdr write) = 0.00

Host zm08.stanford.edu: Disk IOPs: /dev/sds

avg(sds read) = 0.05    avg(sds write) = 0.00

Host zm08.stanford.edu: Disk IOPs: /dev/sdi

avg(sdi read) = 5.28    avg(sdi write) = 10.67

Host zm08.stanford.edu: Disk IOPs: /dev/sdh

avg(sdh read) = 14.45    avg(sdh write) = 0.02

Host zm08.stanford.edu: Disk IOPs: /dev/dm-4

avg(dm-4 read) = 101.32    avg(dm-4 write) = 40.18

Host zm08.stanford.edu: Disk IOPs: /dev/sdb

avg(sdb read) = 0.05    avg(sdb write) = 0.00

Host zm08.stanford.edu: Disk IOPs: /dev/dm-3

avg(dm-3 read) = 28.81    avg(dm-3 write) = 0.03

Host zm08.stanford.edu: Disk IOPs: /dev/sdm

avg(sdm read) = 29.06    avg(sdm write) = 5.05

Host zm08.stanford.edu: Disk IOPs: /dev/sdp

avg(sdp read) = 0.09    avg(sdp write) = 0.43

Host zm08.stanford.edu: Disk IOPs: /dev/sdn

avg(sdn read) = 14.45    avg(sdn write) = 0.02

Host zm08.stanford.edu: Disk IOPs: /dev/sdu

avg(sdu read) = 0.05    avg(sdu write) = 0.00

Host zm08.stanford.edu: Disk IOPs: /dev/sdd

avg(sdd read) = 0.05    avg(sdd write) = 0.00

Host zm08.stanford.edu: Disk IOPs: /dev/sdo

avg(sdo read) = 5.28    avg(sdo write) = 10.67

Host zm08.stanford.edu: Disk Usage

avg(/opt/zimbra/redo-mysql) = 34.42    avg(/usr/vice/cache) = 13.28    avg(/opt/zimbra/store) = 88.00    avg(/opt/zimbra) = 70.54    avg(/opt/zimbra/hsm1) = 88.00    avg(/) = 8.01    avg(/opt/zimbra/redolog) = 13.09

Host zm08.stanford.edu: Open file descriptor count

avg(total system file descriptors open) = 6772.62    avg(mailboxd file descriptors open) = 3391.43

Host zm08.stanford.edu: Process CPU Time (Top 10 avg)

avg(updatedb) = 29.78    avg(java) = 1912.00    avg(gzip) = 2689.48    avg(mysqld) = 290.25    avg(perl) = 24.29    avg(mysqldump) = 127.23    avg(zmmailboxd) = 1745.94    avg(rm) = 26.00    avg(horsewatcher-fe) = 26.51    avg(zmcompresslogs) = 724.25

Host zm08.stanford.edu: SOAP: Invocation Count: Summary (Top 10 max)

max(GetContactsRequest) = 2467.00    max(MsgActionRequest.delete) = 617.00    max(NoOpRequest) = 93.00    max(GetInfoRequest) = 95.00    max(AddMsgRequest) = 96.00    max(GetDomainInfoRequest) = 340.00    max(GetFolderRequest) = 219.00    max(SyncRequest) = 90.00    max(AuthRequest) = 96.00    max(GetAppointmentRequest) = 1262.00

Host zm08.stanford.edu: SOAP: Average Call Duration: Summary (Top 10 avg)

avg(SearchRequest) = 154.87    avg(SendMsgRequest) = 504.20    avg(MsgActionRequest.delete) = 152.80    avg(DeleteAccountRequest) = 11681.75    avg(BackupQueryRequest) = 564.00    avg(GetAggregateQuotaUsageOnServerRequest) = 976.00    avg(SendInviteReplyRequest) = 347.08    avg(AutoCompleteRequest) = 197.66    avg(FolderActionRequest.empty) = 368.40    avg(GetQuotaUsageRequest) = 1134.00

Host zm08.stanford.edu: MySQL: InnoDB Buffer Pool Pages

avg(pages read) = 209758362.70    avg(pages written) = 74419247.28

Host zm08.stanford.edu: MySQL: InnoDB Buffer Pool Hit Rate

avg(buffer pool hit rate) = 999.10

Host zm08.stanford.edu: MySQL: Database Connections In Use

avg(connections in use) = 0.41

Host zm08.stanford.edu: MySQL: Tables Open/Opened

avg(open_tables) = 1189.24    avg(opened_tables (cumulative)) = 211225.15

Host zm08.stanford.edu: MySQL: Total Slow Queries Count

avg(slow queries (cumulative)) = 262022.52

Host zm08.stanford.edu: Mailboxd: Connection Pool Get Latency

avg(mysql) = 0.19    avg(ldap) = 0.01

Host zm08.stanford.edu: Mailboxd: Lucene IO

avg(Index writes) = 28.85    avg(Index reads) = 77.45

Host zm08.stanford.edu: Mailboxd: LMTP Delivery Throughput

avg(received) = 53.57    avg(delivered) = 111.98

Host zm08.stanford.edu: Mailboxd: LMTP Delivery Rate

avg(received msgs) = 0.42    avg(delivered msgs) = 0.48    avg(received x rcpts) = 0.49

Host zm08.stanford.edu: Mailboxd: Mailbox Add Rate (Delivery Rate)

avg(mailbox add rate) = 0.58

Host zm08.stanford.edu: Mailboxd: Mailbox Add Latency (Delivery Speed)

avg(mailbox add latency) = 73.85

Host zm08.stanford.edu: Mailboxd: Request Rate by Client Protocol

avg(SOAP) = 4.40    avg(IMAP) = 53.40    avg(POP) = 2.38

Host zm08.stanford.edu: Mailboxd: Response Time by Client Protocol

avg(SOAP) = 288.67    avg(IMAP) = 18.50    avg(POP) = 115.81

Host zm08.stanford.edu: Mailboxd: Active Connections by Client Protocol

avg(IMAP) = 136.03    avg(IMAP SSL) = 510.21    avg(POP) = 0.12    avg(POP SSL) = 1.27    avg(SOAP sessions) = 180.14

Host zm08.stanford.edu: Mailboxd: Mailbox Get Count

avg(mailbox get count) = 2902.27

Host zm08.stanford.edu: Mailboxd: Mailbox Get Latency

avg(mailbox get latency) = 0.01

Host zm08.stanford.edu: Mailboxd: Mailbox Cache Hit Rate

avg(mailbox cache hit rate) = 99.95

Host zm08.stanford.edu: Mailboxd: Mailbox Item/Blob Cache Hit Rate

avg(msg blob cache) = 42.84    avg(item metadata cache) = 52.83

Host zm08.stanford.edu: Mailboxd: Minor Garbage Collection Time

avg(minor GC time) = 0.33

Host zm08.stanford.edu: Mailboxd: Major Garbage Collection Time

avg(major GC time) = 0.01

Host zm08.stanford.edu: Mailboxd: Minor Garbage Collection Count

avg(minor GC count) = 8.66

Host zm08.stanford.edu: Mailboxd: Major Garbage Collection Count

avg(major GC count) = 0.01

Host zm08.stanford.edu: Mailboxd: JVM Heap Used

avg(total) = 4853.34    avg(PS Old Gen) = 0.00    avg(CMS Old Gen) = 3960.37    avg(Tenured Gen) = 0.00    avg(Train Gen) = 0.00    avg(PS Eden Space) = 0.00    avg(PS Survivor Space) = 0.00    avg(Par Eden Space) = 824.52    avg(Par Survivor Space) = 68.45    avg(Eden Space) = 0.00    avg(Survivor Space) = 0.00

Host zm08.stanford.edu: Mailboxd: JVM Heap Free

avg(total free) = 2973.97    avg(PS Old Gen free) = 0.00    avg(CMS Old Gen free) = 2060.63    avg(Tenured Gen free) = 0.00    avg(Train Gen free) = 0.00    avg(PS Eden Space free) = 0.00    avg(PS Survivor Space free) = 0.00    avg(Par Eden Space free) = 781.10    avg(Par Survivor Space free) = 132.24    avg(Eden Space free) = 0.00    avg(Survivor Space free) = 0.00

Host zm08.stanford.edu: Mailboxd: JVM Permanent Generation and Code Cache

avg(PS Perm Gen) = 0.00    avg(Perm Gen) = 0.00    avg(CMS Perm Gen) = 144.96    avg(Code Cache) = 36.12    avg(Perm Gen [shared-ro]) = 0.00    avg(Perm Gen [shared-rw]) = 0.00    avg(PS Perm Gen free) = 0.00    avg(Perm Gen free) = 0.00    avg(CMS Perm Gen free) = 110.50    avg(Code Cache free) = 10.22    avg(Perm Gen [shared-ro] free) = 0.00    avg(Perm Gen [shared-rw] free) = 0.00

Host zm08.stanford.edu: convertd: CPU time used

avg(total cputime) = 0.10    avg(user time) = 0.09    avg(system time) = 0.01

Host zm08.stanford.edu: convertd: Resident Memory

avg(convertd rss) = 159.07

Host zm08.stanford.edu: convertd: Processes and Threads

avg(processes) = 5.65    avg(threads) = 5.65

No data available for the following charts:

Host zm08.stanford.edu: Disk Throughput: /dev/dm-7 Host zm08.stanford.edu: Disk Throughput: /dev/sdx Host zm08.stanford.edu: Disk Throughput: /dev/sdab Host zm08.stanford.edu: Disk Throughput: /dev/sdaa Host zm08.stanford.edu: Disk Throughput: /dev/sdad Host zm08.stanford.edu: Disk Throughput: /dev/sdag Host zm08.stanford.edu: Disk Throughput: /dev/sdaf Host zm08.stanford.edu: Disk Throughput: /dev/sdy Host zm08.stanford.edu: Disk Throughput: /dev/sdv Host zm08.stanford.edu: Disk Throughput: /dev/sdac Host zm08.stanford.edu: Disk Throughput: /dev/dm-5 Host zm08.stanford.edu: Disk Throughput: /dev/sdw Host zm08.stanford.edu: Disk Throughput: /dev/sdae Host zm08.stanford.edu: Disk Throughput: /dev/dm-6 Host zm08.stanford.edu: Disk Throughput: /dev/sdz Host zm08.stanford.edu: Disk IOPs: /dev/dm-7 Host zm08.stanford.edu: Disk IOPs: /dev/sdx Host zm08.stanford.edu: Disk IOPs: /dev/sdab Host zm08.stanford.edu: Disk IOPs: /dev/sdaa Host zm08.stanford.edu: Disk IOPs: /dev/sdad Host zm08.stanford.edu: Disk IOPs: /dev/sdag Host zm08.stanford.edu: Disk IOPs: /dev/sdaf Host zm08.stanford.edu: Disk IOPs: /dev/sdy Host zm08.stanford.edu: Disk IOPs: /dev/sdv Host zm08.stanford.edu: Disk IOPs: /dev/sdac Host zm08.stanford.edu: Disk IOPs: /dev/dm-5 Host zm08.stanford.edu: Disk IOPs: /dev/sdw Host zm08.stanford.edu: Disk IOPs: /dev/sdae Host zm08.stanford.edu: Disk IOPs: /dev/dm-6 Host zm08.stanford.edu: Disk IOPs: /dev/sdz Host zm08.stanford.edu: Mailboxd: Dirty Lucene Index Writers Host zm08.stanford.edu: Mailboxd: Lucene IndexWriterCache Hitrate Host zm08.stanford.edu: nginx: CPU time used Host zm08.stanford.edu: nginx: Resident Memory Host zm08.stanford.edu: nginx: Processes and Threads

Summary