2015-01-21

Additional charts

Host zm08.stanford.edu: Total CPU

avg(user) = 5.54    avg(sys) = 0.74    avg(idle) = 90.49    avg(iowait) = 3.12    avg(nice) = 0.00    avg(irq) = 0.00    avg(softirq) = 0.09

Host zm08.stanford.edu: Individual CPU user time

avg(cpu0) = 16.42    avg(cpu1) = 15.99    avg(cpu2) = 7.59    avg(cpu3) = 7.31    avg(cpu4) = 4.55    avg(cpu5) = 6.09    avg(cpu6) = 3.82    avg(cpu7) = 3.15    avg(cpu8) = 2.71    avg(cpu9) = 3.89    avg(cpu10) = 2.16    avg(cpu11) = 4.40    avg(cpu12) = 7.68    avg(cpu13) = 6.81    avg(cpu14) = 5.28    avg(cpu15) = 4.00    avg(cpu16) = 16.94    avg(cpu17) = 3.40    avg(cpu18) = 1.81    avg(cpu19) = 3.50    avg(cpu20) = 1.33    avg(cpu21) = 1.66    avg(cpu22) = 1.11    avg(cpu23) = 1.64

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) = 1.72    avg(cpu1) = 1.78    avg(cpu2) = 1.09    avg(cpu3) = 1.01    avg(cpu4) = 0.68    avg(cpu5) = 0.81    avg(cpu6) = 0.66    avg(cpu7) = 0.49    avg(cpu8) = 0.36    avg(cpu9) = 0.51    avg(cpu10) = 0.30    avg(cpu11) = 0.54    avg(cpu12) = 1.07    avg(cpu13) = 0.97    avg(cpu14) = 1.00    avg(cpu15) = 0.82    avg(cpu16) = 1.34    avg(cpu17) = 0.63    avg(cpu18) = 0.39    avg(cpu19) = 0.55    avg(cpu20) = 0.23    avg(cpu21) = 0.31    avg(cpu22) = 0.21    avg(cpu23) = 0.28

Host zm08.stanford.edu: Individual CPU idle time

avg(cpu0) = 57.14    avg(cpu1) = 54.31    avg(cpu2) = 89.20    avg(cpu3) = 89.87    avg(cpu4) = 93.91    avg(cpu5) = 91.94    avg(cpu6) = 94.49    avg(cpu7) = 95.92    avg(cpu8) = 96.57    avg(cpu9) = 95.20    avg(cpu10) = 97.27    avg(cpu11) = 94.56    avg(cpu12) = 84.84    avg(cpu13) = 85.17    avg(cpu14) = 93.01    avg(cpu15) = 94.88    avg(cpu16) = 81.23    avg(cpu17) = 95.73    avg(cpu18) = 97.67    avg(cpu19) = 95.51    avg(cpu20) = 98.36    avg(cpu21) = 97.93    avg(cpu22) = 98.60    avg(cpu23) = 97.97

Host zm08.stanford.edu: Individual CPU iowait time

avg(cpu0) = 24.41    avg(cpu1) = 27.51    avg(cpu2) = 1.99    avg(cpu3) = 1.68    avg(cpu4) = 0.79    avg(cpu5) = 1.02    avg(cpu6) = 0.88    avg(cpu7) = 0.38    avg(cpu8) = 0.33    avg(cpu9) = 0.31    avg(cpu10) = 0.24    avg(cpu11) = 0.40    avg(cpu12) = 6.26    avg(cpu13) = 6.97    avg(cpu14) = 0.59    avg(cpu15) = 0.28    avg(cpu16) = 0.24    avg(cpu17) = 0.21    avg(cpu18) = 0.13    avg(cpu19) = 0.36    avg(cpu20) = 0.07    avg(cpu21) = 0.08    avg(cpu22) = 0.07    avg(cpu23) = 0.10

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) = 0.30    avg(cpu1) = 0.40    avg(cpu2) = 0.11    avg(cpu3) = 0.12    avg(cpu4) = 0.06    avg(cpu5) = 0.13    avg(cpu6) = 0.15    avg(cpu7) = 0.04    avg(cpu8) = 0.02    avg(cpu9) = 0.07    avg(cpu10) = 0.01    avg(cpu11) = 0.09    avg(cpu12) = 0.15    avg(cpu13) = 0.07    avg(cpu14) = 0.11    avg(cpu15) = 0.01    avg(cpu16) = 0.24    avg(cpu17) = 0.01    avg(cpu18) = 0.00    avg(cpu19) = 0.08    avg(cpu20) = 0.00    avg(cpu21) = 0.00    avg(cpu22) = 0.00    avg(cpu23) = 0.00

Host zm08.stanford.edu: Process CPU

avg(mailbox) = 4.44    avg(mysql) = 0.74    avg(stats) = 0.00

Host zm08.stanford.edu: Process Total Memory

avg(mailbox) = 21360.57    avg(mysql) = 18129.90    avg(stats) = 0.00

Host zm08.stanford.edu: Process Resident Memory

avg(mailbox) = 8910.09    avg(mysql) = 17873.56    avg(stats) = 0.00

Host zm08.stanford.edu: Virtual Memory

avg(swapped) = 3.12    avg(free) = 775.71    avg(active) = 37860.83    avg(inactive) = 23946.30    avg(page cache) = 31858.37

Host zm08.stanford.edu: Context Switches

avg(context switches) = 10634.75

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

avg(processes waiting for run time) = 2.09    avg(processes waiting for io time) = 1.12    avg(load average (1 min)) = 2.78

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

avg(sdf) = 21.17    avg(dm-0) = 17.91    avg(sdg) = 13.77    avg(dm-2) = 33.53    avg(sdl) = 21.19    avg(sdh) = 13.04    avg(dm-4) = 18.07    avg(dm-3) = 9.71    avg(sdm) = 13.78    avg(sdn) = 13.03

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) = 655.24    avg(sdf write) = 975.32

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) = 23.83    avg(sdk write) = 35.47

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) = 0.26    avg(sdj write) = 149.26

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

avg(dm-0 read) = 1645.92    avg(dm-0 write) = 503.81

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

avg(sdg read) = 823.06    avg(sdg write) = 252.08

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

avg(dm-1 read) = 0.12    avg(dm-1 write) = 299.59

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

avg(dm-2 read) = 1310.05    avg(dm-2 write) = 1948.98

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

avg(sdl read) = 655.21    avg(sdl write) = 973.66

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) = 368.60    avg(sdi write) = 652.50

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

avg(sdh read) = 1181.39    avg(sdh write) = 3.78

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

avg(dm-4 read) = 2361.93    avg(dm-4 write) = 7.50

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) = 736.90    avg(dm-3 write) = 1307.11

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

avg(sdm read) = 823.26    avg(sdm write) = 251.73

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

avg(sdp read) = 0.26    avg(sdp write) = 150.33

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

avg(sdn read) = 1180.93    avg(sdn write) = 3.71

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) = 368.70    avg(sdo write) = 654.61

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) = 41.24    avg(sdf write) = 38.30

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) = 1.23    avg(sdk write) = 1.75

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) = 0.06    avg(sdj write) = 0.72

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

avg(dm-0 read) = 115.63    avg(dm-0 write) = 36.13

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

avg(sdg read) = 57.86    avg(sdg write) = 18.06

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

avg(dm-1 read) = 0.03    avg(dm-1 write) = 1.45

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

avg(dm-2 read) = 82.38    avg(dm-2 write) = 76.61

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

avg(sdl read) = 41.24    avg(sdl write) = 38.30

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) = 6.18    avg(sdi write) = 51.69

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

avg(sdh read) = 24.78    avg(sdh write) = 0.07

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

avg(dm-4 read) = 49.45    avg(dm-4 write) = 0.14

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) = 12.26    avg(dm-3 write) = 103.37

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

avg(sdm read) = 57.86    avg(sdm write) = 18.06

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

avg(sdp read) = 0.06    avg(sdp write) = 0.72

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

avg(sdn read) = 24.78    avg(sdn write) = 0.07

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) = 6.18    avg(sdo write) = 51.69

Host zm08.stanford.edu: Disk Usage

avg(/opt/zimbra/redo-mysql) = 27.12    avg(/usr/vice/cache) = 13.01    avg(/opt/zimbra/store) = 63.00    avg(/opt/zimbra) = 66.00    avg(/opt/zimbra/hsm1) = 90.00    avg(/) = 8.01    avg(/opt/zimbra/redolog) = 20.90

Host zm08.stanford.edu: Open file descriptor count

avg(total system file descriptors open) = 7426.36    avg(mailboxd file descriptors open) = 4074.09

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

avg(updatedb) = 25.22    avg(java) = 1339.67    avg(gzip) = 2644.05    avg(mysqld) = 528.89    avg(perl) = 41.71    avg(httpd) = 37.68    avg(mysqldump) = 159.61    avg(zmmailboxd) = 3201.35    avg(horsewatcher-fe) = 49.35    avg(zmcompresslogs) = 1172.20

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

max(MsgActionRequest.move) = 1243.00    max(GetContactsRequest) = 585.00    max(MsgActionRequest.delete) = 900.00    max(NoOpRequest) = 397.00    max(MsgActionRequest.update) = 1108.00    max(AddMsgRequest) = 359.00    max(GetFolderRequest) = 461.00    max(ContactActionRequest.delete) = 653.00    max(SyncRequest) = 469.00    max(GetAppointmentRequest) = 1293.00

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

avg(ConvActionRequest.copy) = 445.00    avg(RestoreRequest) = 1760904.33    avg(SendMsgRequest) = 355.54    avg(DeleteAccountRequest) = 11823.50    avg(GetAggregateQuotaUsageOnServerRequest) = 1021.00    avg(FolderActionRequest.read) = 460.00    avg(SendInviteReplyRequest) = 341.53    avg(FolderActionRequest.empty) = 1107.83    avg(SendShareNotificationRequest) = 517.00    avg(GetQuotaUsageRequest) = 1213.00

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

avg(pages read) = 198629288.13    avg(pages written) = 72530003.02

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

avg(buffer pool hit rate) = 999.48

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

avg(connections in use) = 0.60

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

avg(open_tables) = 1191.90    avg(opened_tables (cumulative)) = 258466.13

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

avg(slow queries (cumulative)) = 840254.88

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

avg(mysql) = 0.17    avg(ldap) = 0.01

Host zm08.stanford.edu: Mailboxd: Lucene IO

avg(Index writes) = 146.41    avg(Index reads) = 365.26

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

avg(received) = 136.45    avg(delivered) = 188.36

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

avg(received msgs) = 1.20    avg(delivered msgs) = 1.48    avg(received x rcpts) = 1.49

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

avg(mailbox add rate) = 2.00

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

avg(mailbox add latency) = 49.70

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

avg(SOAP) = 15.63    avg(IMAP) = 90.01    avg(POP) = 3.00

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

avg(SOAP) = 247.66    avg(IMAP) = 20.69    avg(POP) = 48.34

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

avg(IMAP) = 189.46    avg(IMAP SSL) = 746.19    avg(POP) = 0.09    avg(POP SSL) = 1.20    avg(SOAP sessions) = 889.92

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

avg(mailbox get count) = 6479.21

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) = 99.97

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

avg(msg blob cache) = 40.14    avg(item metadata cache) = 35.99

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

avg(minor GC time) = 0.63

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

avg(major GC time) = 0.03

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

avg(minor GC count) = 10.68

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) = 4726.27    avg(PS Old Gen) = 0.00    avg(CMS Old Gen) = 3827.75    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) = 799.57    avg(Par Survivor Space) = 98.95    avg(Eden Space) = 0.00    avg(Survivor Space) = 0.00

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

avg(total free) = 3101.04    avg(PS Old Gen free) = 0.00    avg(CMS Old Gen free) = 2193.25    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) = 806.06    avg(Par Survivor Space free) = 101.73    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) = 136.75    avg(Code Cache) = 37.35    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) = 98.88    avg(Code Cache free) = 9.22    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) = 0.35    avg(user time) = 0.33    avg(system time) = 0.02

Host zm08.stanford.edu: convertd: Resident Memory

avg(convertd rss) = 170.84

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

avg(processes) = 6.09    avg(threads) = 6.09

No data available for the following charts:

Host zm08.stanford.edu: Swap Activity 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