2015-06-21

Additional charts

Host zm08.stanford.edu: Total CPU

avg(user) = 3.58    avg(sys) = 0.45    avg(idle) = 93.80    avg(iowait) = 2.13    avg(nice) = 0.00    avg(irq) = 0.00    avg(softirq) = 0.03

Host zm08.stanford.edu: Individual CPU user time

avg(cpu0) = 10.43    avg(cpu1) = 12.28    avg(cpu2) = 2.97    avg(cpu3) = 5.49    avg(cpu4) = 10.20    avg(cpu5) = 2.82    avg(cpu6) = 1.11    avg(cpu7) = 7.38    avg(cpu8) = 0.85    avg(cpu9) = 1.52    avg(cpu10) = 0.70    avg(cpu11) = 1.11    avg(cpu12) = 3.33    avg(cpu13) = 5.47    avg(cpu14) = 2.68    avg(cpu15) = 3.49    avg(cpu16) = 2.70    avg(cpu17) = 3.15    avg(cpu18) = 1.11    avg(cpu19) = 1.60    avg(cpu20) = 0.72    avg(cpu21) = 2.42    avg(cpu22) = 0.56    avg(cpu23) = 2.00

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) = 0.95    avg(cpu1) = 1.12    avg(cpu2) = 0.45    avg(cpu3) = 0.63    avg(cpu4) = 1.07    avg(cpu5) = 0.43    avg(cpu6) = 0.27    avg(cpu7) = 0.40    avg(cpu8) = 0.17    avg(cpu9) = 0.23    avg(cpu10) = 0.16    avg(cpu11) = 0.17    avg(cpu12) = 0.47    avg(cpu13) = 0.61    avg(cpu14) = 0.64    avg(cpu15) = 0.60    avg(cpu16) = 0.43    avg(cpu17) = 0.49    avg(cpu18) = 0.24    avg(cpu19) = 0.25    avg(cpu20) = 0.19    avg(cpu21) = 0.33    avg(cpu22) = 0.16    avg(cpu23) = 0.28

Host zm08.stanford.edu: Individual CPU idle time

avg(cpu0) = 70.89    avg(cpu1) = 67.30    avg(cpu2) = 95.66    avg(cpu3) = 92.74    avg(cpu4) = 88.11    avg(cpu5) = 96.21    avg(cpu6) = 98.41    avg(cpu7) = 91.95    avg(cpu8) = 98.91    avg(cpu9) = 98.14    avg(cpu10) = 99.09    avg(cpu11) = 98.63    avg(cpu12) = 91.02    avg(cpu13) = 88.87    avg(cpu14) = 96.53    avg(cpu15) = 95.78    avg(cpu16) = 96.79    avg(cpu17) = 96.23    avg(cpu18) = 98.57    avg(cpu19) = 98.10    avg(cpu20) = 99.06    avg(cpu21) = 97.12    avg(cpu22) = 99.25    avg(cpu23) = 97.63

Host zm08.stanford.edu: Individual CPU iowait time

avg(cpu0) = 17.58    avg(cpu1) = 19.08    avg(cpu2) = 0.89    avg(cpu3) = 1.06    avg(cpu4) = 0.46    avg(cpu5) = 0.49    avg(cpu6) = 0.18    avg(cpu7) = 0.20    avg(cpu8) = 0.07    avg(cpu9) = 0.09    avg(cpu10) = 0.04    avg(cpu11) = 0.06    avg(cpu12) = 5.16    avg(cpu13) = 5.01    avg(cpu14) = 0.14    avg(cpu15) = 0.10    avg(cpu16) = 0.07    avg(cpu17) = 0.09    avg(cpu18) = 0.07    avg(cpu19) = 0.04    avg(cpu20) = 0.02    avg(cpu21) = 0.09    avg(cpu22) = 0.02    avg(cpu23) = 0.06

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) = 0.14    avg(cpu1) = 0.22    avg(cpu2) = 0.02    avg(cpu3) = 0.08    avg(cpu4) = 0.15    avg(cpu5) = 0.03    avg(cpu6) = 0.02    avg(cpu7) = 0.05    avg(cpu8) = 0.00    avg(cpu9) = 0.01    avg(cpu10) = 0.00    avg(cpu11) = 0.00    avg(cpu12) = 0.01    avg(cpu13) = 0.03    avg(cpu14) = 0.00    avg(cpu15) = 0.01    avg(cpu16) = 0.00    avg(cpu17) = 0.03    avg(cpu18) = 0.00    avg(cpu19) = 0.00    avg(cpu20) = 0.00    avg(cpu21) = 0.03    avg(cpu22) = 0.00    avg(cpu23) = 0.02

Host zm08.stanford.edu: Process CPU

avg(mailbox) = 2.42    avg(mysql) = 0.69    avg(stats) = 0.00

Host zm08.stanford.edu: Process Total Memory

avg(mailbox) = 21094.51    avg(mysql) = 18153.00    avg(stats) = 0.00

Host zm08.stanford.edu: Process Resident Memory

avg(mailbox) = 8782.74    avg(mysql) = 17866.52    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) = 17.78    avg(free) = 2758.76    avg(active) = 38299.73    avg(inactive) = 21466.52    avg(page cache) = 29046.87

Host zm08.stanford.edu: Context Switches

avg(context switches) = 5348.58

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

avg(processes waiting for run time) = 1.46    avg(processes waiting for io time) = 0.87    avg(load average (1 min)) = 1.97

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

avg(sdf) = 15.06    avg(sdk) = 15.05    avg(dm-0) = 20.62    avg(sdg) = 9.82    avg(dm-1) = 3.44    avg(sdl) = 9.82    avg(sdh) = 10.18    avg(dm-4) = 13.24    avg(dm-3) = 12.12    avg(sdm) = 10.17

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) = 595.05    avg(sdf write) = 498.45

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) = 594.93    avg(sdk write) = 497.84

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) = 0.34    avg(sdj write) = 45.61

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

avg(dm-0 read) = 1189.59    avg(dm-0 write) = 996.29

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

avg(sdg read) = 572.80    avg(sdg write) = 90.20

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

avg(dm-1 read) = 495.16    avg(dm-1 write) = 757.49

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

avg(dm-2 read) = 0.29    avg(dm-2 write) = 90.89

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

avg(sdl read) = 572.54    avg(sdl write) = 90.00

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) = 247.86    avg(sdi write) = 376.71

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

avg(sdh read) = 872.10    avg(sdh write) = 0.83

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

avg(dm-4 read) = 1744.00    avg(dm-4 write) = 1.71

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) = 1144.95    avg(dm-3 write) = 180.19

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

avg(sdm read) = 872.29    avg(sdm write) = 0.88

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

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

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

avg(sdn read) = 247.70    avg(sdn write) = 380.78

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

avg(sdu read) = 22.02    avg(sdu write) = 34.86

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) = 0.34    avg(sdo write) = 45.28

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) = 38.06    avg(sdf write) = 20.96

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) = 38.06    avg(sdk write) = 20.96

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) = 0.08    avg(sdj write) = 0.41

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

avg(dm-0 read) = 76.02    avg(dm-0 write) = 41.92

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

avg(sdg read) = 36.36    avg(sdg write) = 7.11

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

avg(dm-1 read) = 11.12    avg(dm-1 write) = 31.19

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

avg(dm-2 read) = 0.07    avg(dm-2 write) = 0.81

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

avg(sdl read) = 36.36    avg(sdl write) = 7.11

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) = 5.61    avg(sdi write) = 15.59

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

avg(sdh read) = 18.97    avg(sdh write) = 0.06

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

avg(dm-4 read) = 37.83    avg(dm-4 write) = 0.12

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) = 72.62    avg(dm-3 write) = 14.22

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

avg(sdm read) = 18.97    avg(sdm write) = 0.06

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

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

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

avg(sdn read) = 5.61    avg(sdn write) = 15.59

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

avg(sdu read) = 0.79    avg(sdu write) = 1.88

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) = 0.09    avg(sdo write) = 0.41

Host zm08.stanford.edu: Disk Usage

avg(/opt/zimbra/redo-mysql) = 27.79    avg(/usr/vice/cache) = 12.92    avg(/opt/zimbra/store) = 95.28    avg(/opt/zimbra) = 73.94    avg(/opt/zimbra/hsm1) = 91.82    avg(/) = 8.01    avg(/opt/zimbra/redolog) = 13.72

Host zm08.stanford.edu: Open file descriptor count

avg(total system file descriptors open) = 6492.52    avg(mailboxd file descriptors open) = 3149.64

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

avg(tripwire) = 1986.00    avg(updatedb) = 31.61    avg(java) = 2019.63    avg(gzip) = 2709.18    avg(mysqld) = 506.52    avg(yum) = 878.00    avg(mysqldump) = 135.69    avg(zmmailboxd) = 1742.37    avg(horsewatcher-fe) = 26.84    avg(zmcompresslogs) = 928.50

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

max(MsgActionRequest.delete) = 399.00    max(NoOpRequest) = 64.00    max(GetInfoRequest) = 79.00    max(WaitSetRequest) = 172.00    max(AddMsgRequest) = 260.00    max(GetDomainInfoRequest) = 304.00    max(GetFolderRequest) = 183.00    max(SyncRequest) = 264.00    max(AuthRequest) = 79.00    max(GetAppointmentRequest) = 68.00

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

avg(SendMsgRequest) = 478.18    avg(DeleteAccountRequest) = 42212.00    avg(BackupQueryRequest) = 427.60    avg(GetAggregateQuotaUsageOnServerRequest) = 2343.00    avg(BrowseRequest) = 333.00    avg(WaitSetRequest) = 344.51    avg(SendInviteReplyRequest) = 441.25    avg(AutoCompleteRequest) = 214.40    avg(DiscoverRightsRequest) = 416.23    avg(GetQuotaUsageRequest) = 3870.00

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

avg(pages read) = 223009842.36    avg(pages written) = 76027041.45

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

avg(buffer pool hit rate) = 999.84

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

avg(connections in use) = 0.36

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

avg(open_tables) = 1188.05    avg(opened_tables (cumulative)) = 223664.39

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

avg(slow queries (cumulative)) = 322113.73

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

avg(mysql) = 0.19    avg(ldap) = 5.41

Host zm08.stanford.edu: Mailboxd: Lucene IO

avg(Index writes) = 48.25    avg(Index reads) = 109.82

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

avg(received) = 47.94    avg(delivered) = 58.09

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

avg(received msgs) = 0.44    avg(delivered msgs) = 0.46    avg(received x rcpts) = 0.48

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

avg(mailbox add rate) = 0.72

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

avg(mailbox add latency) = 65.52

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

avg(SOAP) = 5.55    avg(IMAP) = 48.74    avg(POP) = 1.52

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

avg(SOAP) = 280.65    avg(IMAP) = 24.27    avg(POP) = 93.12

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

avg(IMAP) = 114.93    avg(IMAP SSL) = 424.28    avg(POP) = 0.04    avg(POP SSL) = 1.01    avg(SOAP sessions) = 132.25

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

avg(mailbox get count) = 3140.10

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) = 99.96

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

avg(msg blob cache) = 41.36    avg(item metadata cache) = 38.90

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

avg(minor GC time) = 0.30

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) = 7.90

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) = 4702.13    avg(PS Old Gen) = 0.00    avg(CMS Old Gen) = 3829.07    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) = 796.40    avg(Par Survivor Space) = 76.66    avg(Eden Space) = 0.00    avg(Survivor Space) = 0.00

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

avg(total free) = 3125.18    avg(PS Old Gen free) = 0.00    avg(CMS Old Gen free) = 2191.93    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) = 809.22    avg(Par Survivor Space free) = 124.03    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) = 139.71    avg(Code Cache) = 35.32    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) = 99.31    avg(Code Cache free) = 11.06    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) = 152.90

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

avg(processes) = 5.70    avg(threads) = 5.70

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