2015-06-15

Additional charts

Host zm08.stanford.edu: Total CPU

avg(user) = 4.65    avg(sys) = 0.68    avg(idle) = 92.14    avg(iowait) = 2.45    avg(nice) = 0.00    avg(irq) = 0.00    avg(softirq) = 0.08

Host zm08.stanford.edu: Individual CPU user time

avg(cpu0) = 12.19    avg(cpu1) = 18.08    avg(cpu2) = 4.54    avg(cpu3) = 7.94    avg(cpu4) = 4.32    avg(cpu5) = 4.81    avg(cpu6) = 1.75    avg(cpu7) = 10.69    avg(cpu8) = 1.33    avg(cpu9) = 2.71    avg(cpu10) = 1.20    avg(cpu11) = 2.26    avg(cpu12) = 4.15    avg(cpu13) = 7.21    avg(cpu14) = 3.57    avg(cpu15) = 4.24    avg(cpu16) = 3.49    avg(cpu17) = 4.52    avg(cpu18) = 1.73    avg(cpu19) = 2.34    avg(cpu20) = 1.23    avg(cpu21) = 3.18    avg(cpu22) = 1.11    avg(cpu23) = 3.05

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) = 1.38    avg(cpu1) = 2.04    avg(cpu2) = 0.74    avg(cpu3) = 1.14    avg(cpu4) = 0.73    avg(cpu5) = 0.81    avg(cpu6) = 0.35    avg(cpu7) = 0.70    avg(cpu8) = 0.25    avg(cpu9) = 0.44    avg(cpu10) = 0.23    avg(cpu11) = 0.33    avg(cpu12) = 0.72    avg(cpu13) = 0.99    avg(cpu14) = 0.96    avg(cpu15) = 0.84    avg(cpu16) = 0.72    avg(cpu17) = 0.73    avg(cpu18) = 0.36    avg(cpu19) = 0.35    avg(cpu20) = 0.29    avg(cpu21) = 0.51    avg(cpu22) = 0.23    avg(cpu23) = 0.43

Host zm08.stanford.edu: Individual CPU idle time

avg(cpu0) = 64.99    avg(cpu1) = 57.29    avg(cpu2) = 93.68    avg(cpu3) = 89.43    avg(cpu4) = 94.28    avg(cpu5) = 93.61    avg(cpu6) = 97.72    avg(cpu7) = 88.13    avg(cpu8) = 98.33    avg(cpu9) = 96.66    avg(cpu10) = 98.51    avg(cpu11) = 97.28    avg(cpu12) = 90.00    avg(cpu13) = 86.44    avg(cpu14) = 95.36    avg(cpu15) = 94.69    avg(cpu16) = 95.68    avg(cpu17) = 94.43    avg(cpu18) = 97.87    avg(cpu19) = 97.21    avg(cpu20) = 98.44    avg(cpu21) = 96.05    avg(cpu22) = 98.63    avg(cpu23) = 96.24

Host zm08.stanford.edu: Individual CPU iowait time

avg(cpu0) = 21.19    avg(cpu1) = 22.08    avg(cpu2) = 0.95    avg(cpu3) = 1.30    avg(cpu4) = 0.53    avg(cpu5) = 0.68    avg(cpu6) = 0.15    avg(cpu7) = 0.34    avg(cpu8) = 0.07    avg(cpu9) = 0.14    avg(cpu10) = 0.04    avg(cpu11) = 0.11    avg(cpu12) = 5.08    avg(cpu13) = 5.29    avg(cpu14) = 0.10    avg(cpu15) = 0.19    avg(cpu16) = 0.08    avg(cpu17) = 0.22    avg(cpu18) = 0.04    avg(cpu19) = 0.08    avg(cpu20) = 0.03    avg(cpu21) = 0.17    avg(cpu22) = 0.03    avg(cpu23) = 0.19

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) = 0.23    avg(cpu1) = 0.51    avg(cpu2) = 0.07    avg(cpu3) = 0.19    avg(cpu4) = 0.12    avg(cpu5) = 0.09    avg(cpu6) = 0.02    avg(cpu7) = 0.12    avg(cpu8) = 0.01    avg(cpu9) = 0.04    avg(cpu10) = 0.00    avg(cpu11) = 0.02    avg(cpu12) = 0.04    avg(cpu13) = 0.06    avg(cpu14) = 0.01    avg(cpu15) = 0.02    avg(cpu16) = 0.01    avg(cpu17) = 0.09    avg(cpu18) = 0.00    avg(cpu19) = 0.01    avg(cpu20) = 0.00    avg(cpu21) = 0.08    avg(cpu22) = 0.00    avg(cpu23) = 0.08

Host zm08.stanford.edu: Process CPU

avg(mailbox) = 3.51    avg(mysql) = 0.70    avg(stats) = 0.00

Host zm08.stanford.edu: Process Total Memory

avg(mailbox) = 21246.55    avg(mysql) = 18153.00    avg(stats) = 0.00

Host zm08.stanford.edu: Process Resident Memory

avg(mailbox) = 8024.16    avg(mysql) = 17867.16    avg(stats) = 0.00

Host zm08.stanford.edu: Swap Activity

avg(swap in) = 0.00    avg(swap out) = 0.03

Host zm08.stanford.edu: Virtual Memory

avg(swapped) = 15.00    avg(free) = 830.26    avg(active) = 39155.38    avg(inactive) = 22608.80    avg(page cache) = 32711.58

Host zm08.stanford.edu: Context Switches

avg(context switches) = 9951.41

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

avg(processes waiting for run time) = 1.77    avg(processes waiting for io time) = 0.90    avg(load average (1 min)) = 2.23

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

avg(sdf) = 16.13    avg(sdk) = 16.10    avg(dm-0) = 26.33    avg(sdg) = 15.59    avg(dm-1) = 5.08    avg(sdl) = 15.57    avg(sdh) = 9.17    avg(dm-4) = 12.55    avg(dm-3) = 19.74    avg(sdm) = 9.18

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) = 649.46    avg(sdf write) = 921.68

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) = 649.54    avg(sdk write) = 921.10

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) = 136.15

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

avg(dm-0 read) = 1298.61    avg(dm-0 write) = 1842.78

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

avg(sdg read) = 1023.67    avg(sdg write) = 276.07

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

avg(dm-1 read) = 492.58    avg(dm-1 write) = 1188.49

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

avg(dm-2 read) = 0.28    avg(dm-2 write) = 273.28

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

avg(sdl read) = 1024.08    avg(sdl write) = 275.38

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) = 246.51    avg(sdi write) = 594.30

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

avg(sdh read) = 786.01    avg(sdh write) = 0.40

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

avg(dm-4 read) = 1571.96    avg(dm-4 write) = 0.81

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) = 2047.36    avg(dm-3 write) = 551.45

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

avg(sdm read) = 786.34    avg(sdm write) = 0.41

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) = 246.46    avg(sdn write) = 594.19

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

avg(sdu read) = 21.75    avg(sdu write) = 35.09

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) = 137.12

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) = 43.76    avg(sdf write) = 34.20

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) = 43.77    avg(sdk write) = 34.20

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) = 0.68

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

avg(dm-0 read) = 87.43    avg(dm-0 write) = 68.41

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

avg(sdg read) = 60.51    avg(sdg write) = 14.91

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

avg(dm-1 read) = 11.02    avg(dm-1 write) = 55.96

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

avg(dm-2 read) = 0.07    avg(dm-2 write) = 1.36

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

avg(sdl read) = 60.51    avg(sdl write) = 14.91

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) = 5.56    avg(sdi write) = 27.98

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

avg(sdh read) = 17.51    avg(sdh write) = 0.03

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

avg(dm-4 read) = 34.93    avg(dm-4 write) = 0.07

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) = 120.92    avg(dm-3 write) = 29.82

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

avg(sdm read) = 17.51    avg(sdm write) = 0.03

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) = 5.56    avg(sdn write) = 27.98

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

avg(sdu read) = 0.84    avg(sdu write) = 1.69

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) = 0.08    avg(sdo write) = 0.68

Host zm08.stanford.edu: Disk Usage

avg(/opt/zimbra/redo-mysql) = 26.58    avg(/usr/vice/cache) = 13.00    avg(/opt/zimbra/store) = 96.40    avg(/opt/zimbra) = 73.46    avg(/opt/zimbra/hsm1) = 90.00    avg(/) = 8.01    avg(/opt/zimbra/redolog) = 19.07

Host zm08.stanford.edu: Open file descriptor count

avg(total system file descriptors open) = 7205.99    avg(mailboxd file descriptors open) = 3806.33

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

avg(updatedb) = 31.74    avg(java) = 1974.15    avg(gzip) = 2728.58    avg(mysqld) = 504.96    avg(perl) = 46.35    avg(httpd) = 48.83    avg(mysqldump) = 152.62    avg(zmmailboxd) = 2527.44    avg(horsewatcher-fe) = 49.62    avg(zmcompresslogs) = 1167.00

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

max(MsgActionRequest.move) = 720.00    max(SearchRequest) = 237.00    max(GetContactsRequest) = 1378.00    max(MsgActionRequest.delete) = 923.00    max(NoOpRequest) = 338.00    max(WaitSetRequest) = 206.00    max(AddMsgRequest) = 247.00    max(GetFolderRequest) = 330.00    max(SyncRequest) = 502.00    max(GetAppointmentRequest) = 4162.00

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

avg(SendMsgRequest) = 358.33    avg(DeleteAccountRequest) = 31570.67    avg(BackupQueryRequest) = 362.40    avg(GetAggregateQuotaUsageOnServerRequest) = 925.00    avg(WaitSetRequest) = 323.54    avg(FolderActionRequest.read) = 319.50    avg(SendInviteReplyRequest) = 297.17    avg(ApplyFilterRulesRequest) = 875.50    avg(FolderActionRequest.empty) = 578.96    avg(GetQuotaUsageRequest) = 1081.00

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

avg(pages read) = 189883524.60    avg(pages written) = 63980808.82

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

avg(buffer pool hit rate) = 999.57

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

avg(connections in use) = 0.40

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

avg(open_tables) = 1191.13    avg(opened_tables (cumulative)) = 188432.94

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

avg(slow queries (cumulative)) = 250509.72

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

avg(mysql) = 0.16    avg(ldap) = 0.17

Host zm08.stanford.edu: Mailboxd: Lucene IO

avg(Index writes) = 112.35    avg(Index reads) = 306.37

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

avg(received) = 152.51    avg(delivered) = 203.34

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

avg(received msgs) = 1.17    avg(delivered msgs) = 1.35    avg(received x rcpts) = 1.38

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

avg(mailbox add rate) = 1.82

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

avg(mailbox add latency) = 42.76

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

avg(SOAP) = 13.31    avg(IMAP) = 90.48    avg(POP) = 2.43

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

avg(SOAP) = 268.33    avg(IMAP) = 26.46    avg(POP) = 60.99

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

avg(IMAP) = 159.99    avg(IMAP SSL) = 603.72    avg(POP) = 0.10    avg(POP SSL) = 1.26    avg(SOAP sessions) = 784.48

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

avg(mailbox get count) = 5557.01

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) = 99.94

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

avg(msg blob cache) = 35.96    avg(item metadata cache) = 34.16

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

avg(minor GC time) = 0.73

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

avg(major GC time) = 0.02

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

avg(minor GC count) = 11.60

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

avg(major GC count) = 0.02

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

avg(total) = 4363.51    avg(PS Old Gen) = 0.00    avg(CMS Old Gen) = 3463.30    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) = 809.53    avg(Par Survivor Space) = 90.68    avg(Eden Space) = 0.00    avg(Survivor Space) = 0.00

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

avg(total free) = 3463.80    avg(PS Old Gen free) = 0.00    avg(CMS Old Gen free) = 2557.70    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) = 796.09    avg(Par Survivor Space free) = 110.01    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) = 122.81    avg(Code Cache) = 38.66    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) = 91.51    avg(Code Cache free) = 2.04    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) = 0.47    avg(user time) = 0.43    avg(system time) = 0.04

Host zm08.stanford.edu: convertd: Resident Memory

avg(convertd rss) = 178.39

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

avg(processes) = 6.02    avg(threads) = 6.02

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