2008-08-26

Additional charts

Host zm02.stanford.edu: Total CPU

avg(user) = 10.23    avg(sys) = 3.67    avg(idle) = 82.85    avg(iowait) = 3.05    avg(nice) = 0.00    avg(irq) = 0.01    avg(softirq) = 0.18

Host zm02.stanford.edu: Individual CPU user time

avg(cpu0) = 18.12    avg(cpu1) = 11.19    avg(cpu2) = 9.96    avg(cpu3) = 9.60    avg(cpu4) = 6.31    avg(cpu5) = 8.45    avg(cpu6) = 9.32    avg(cpu7) = 8.88

Host zm02.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

Host zm02.stanford.edu: Individual CPU sys time

avg(cpu0) = 4.01    avg(cpu1) = 4.32    avg(cpu2) = 4.03    avg(cpu3) = 3.16    avg(cpu4) = 3.14    avg(cpu5) = 3.28    avg(cpu6) = 3.86    avg(cpu7) = 3.55

Host zm02.stanford.edu: Individual CPU idle time

avg(cpu0) = 74.39    avg(cpu1) = 77.51    avg(cpu2) = 79.71    avg(cpu3) = 86.19    avg(cpu4) = 89.57    avg(cpu5) = 87.13    avg(cpu6) = 81.72    avg(cpu7) = 86.60

Host zm02.stanford.edu: Individual CPU iowait time

avg(cpu0) = 2.68    avg(cpu1) = 6.78    avg(cpu2) = 6.13    avg(cpu3) = 0.97    avg(cpu4) = 0.92    avg(cpu5) = 1.06    avg(cpu6) = 4.96    avg(cpu7) = 0.90

Host zm02.stanford.edu: Individual CPU irq time

avg(cpu0) = 0.08    avg(cpu1) = 0.04    avg(cpu2) = 0.03    avg(cpu3) = 0.00    avg(cpu4) = 0.00    avg(cpu5) = 0.00    avg(cpu6) = 0.02    avg(cpu7) = 0.00

Host zm02.stanford.edu: Individual CPU softirq time

avg(cpu0) = 0.72    avg(cpu1) = 0.14    avg(cpu2) = 0.12    avg(cpu3) = 0.06    avg(cpu4) = 0.05    avg(cpu5) = 0.06    avg(cpu6) = 0.11    avg(cpu7) = 0.06

Host zm02.stanford.edu: Swap Activity

avg(swap in) = 0.31    avg(swap out) = 0.40

Host zm02.stanford.edu: Virtual Memory

avg(swapped) = 378.03    avg(free) = 132.96    avg(active) = 13719.34    avg(inactive) = 640.49    avg(page cache) = 2629.79

Host zm02.stanford.edu: Context Switches

avg(context switches) = 8286.07

Host zm02.stanford.edu: Run/Blocked Process Queue Size, Load Average

avg(processes waiting for run time) = 1.47    avg(processes waiting for io time) = 0.44    avg(load average (1 min)) = 1.91

Host zm02.stanford.edu: Disk Utilization

avg(sda) = 0.16    avg(sdb) = 0.00    avg(sdc) = 0.00    avg(sdd) = 1.29    avg(sde) = 0.00    avg(sdf) = 0.00    avg(sdg) = 1.27    avg(sdh) = 1.75    avg(sdi) = 4.03    avg(sdj) = 0.00    avg(sdk) = 1.84    avg(sdl) = 4.08    avg(sdm) = 0.00    avg(sdn) = 0.00    avg(sdo) = 0.00    avg(sdp) = 1.29    avg(sdq) = 0.00    avg(sdr) = 0.00    avg(sds) = 1.28    avg(sdt) = 1.74    avg(sdu) = 4.03    avg(sdv) = 0.00    avg(sdw) = 1.84    avg(sdx) = 4.08    avg(sdy) = 0.00    avg(dm-0) = 7.22    avg(dm-1) = 16.20    avg(dm-2) = 4.78

Host zm02.stanford.edu: Disk Throughput: /dev/sda

avg(sda read) = 26.04    avg(sda write) = 41.64

Host zm02.stanford.edu: Disk Throughput: /dev/sdd

avg(sdd read) = 143.87    avg(sdd write) = 129.86

Host zm02.stanford.edu: Disk Throughput: /dev/sdg

avg(sdg read) = 144.94    avg(sdg write) = 129.99

Host zm02.stanford.edu: Disk Throughput: /dev/sdh

avg(sdh read) = 76.47    avg(sdh write) = 191.46

Host zm02.stanford.edu: Disk Throughput: /dev/sdi

avg(sdi read) = 222.03    avg(sdi write) = 26.62

Host zm02.stanford.edu: Disk Throughput: /dev/sdk

avg(sdk read) = 77.25    avg(sdk write) = 189.25

Host zm02.stanford.edu: Disk Throughput: /dev/sdl

avg(sdl read) = 222.71    avg(sdl write) = 26.75

Host zm02.stanford.edu: Disk Throughput: /dev/sdp

avg(sdp read) = 145.03    avg(sdp write) = 129.86

Host zm02.stanford.edu: Disk Throughput: /dev/sds

avg(sds read) = 145.20    avg(sds write) = 130.09

Host zm02.stanford.edu: Disk Throughput: /dev/sdt

avg(sdt read) = 72.15    avg(sdt write) = 190.17

Host zm02.stanford.edu: Disk Throughput: /dev/sdu

avg(sdu read) = 219.52    avg(sdu write) = 26.79

Host zm02.stanford.edu: Disk Throughput: /dev/sdw

avg(sdw read) = 70.88    avg(sdw write) = 193.03

Host zm02.stanford.edu: Disk Throughput: /dev/sdx

avg(sdx read) = 223.44    avg(sdx write) = 26.83

Host zm02.stanford.edu: Disk Throughput: /dev/dm-0

avg(dm-0 read) = 296.75    avg(dm-0 write) = 763.91

Host zm02.stanford.edu: Disk Throughput: /dev/dm-1

avg(dm-1 read) = 887.69    avg(dm-1 write) = 107.00

Host zm02.stanford.edu: Disk Throughput: /dev/dm-2

avg(dm-2 read) = 579.05    avg(dm-2 write) = 519.80

Host zm02.stanford.edu: Disk IOPs: /dev/sda

avg(sda read) = 1.77    avg(sda write) = 2.90

Host zm02.stanford.edu: Disk IOPs: /dev/sdd

avg(sdd read) = 5.43    avg(sdd write) = 1.38

Host zm02.stanford.edu: Disk IOPs: /dev/sdg

avg(sdg read) = 5.40    avg(sdg write) = 1.30

Host zm02.stanford.edu: Disk IOPs: /dev/sdh

avg(sdh read) = 4.97    avg(sdh write) = 11.03

Host zm02.stanford.edu: Disk IOPs: /dev/sdi

avg(sdi read) = 9.09    avg(sdi write) = 1.40

Host zm02.stanford.edu: Disk IOPs: /dev/sdk

avg(sdk read) = 4.96    avg(sdk write) = 10.93

Host zm02.stanford.edu: Disk IOPs: /dev/sdl

avg(sdl read) = 9.05    avg(sdl write) = 1.42

Host zm02.stanford.edu: Disk IOPs: /dev/sdp

avg(sdp read) = 5.43    avg(sdp write) = 1.38

Host zm02.stanford.edu: Disk IOPs: /dev/sds

avg(sds read) = 5.38    avg(sds write) = 1.31

Host zm02.stanford.edu: Disk IOPs: /dev/sdt

avg(sdt read) = 4.96    avg(sdt write) = 10.86

Host zm02.stanford.edu: Disk IOPs: /dev/sdu

avg(sdu read) = 9.05    avg(sdu write) = 1.38

Host zm02.stanford.edu: Disk IOPs: /dev/sdw

avg(sdw read) = 4.89    avg(sdw write) = 11.07

Host zm02.stanford.edu: Disk IOPs: /dev/sdx

avg(sdx read) = 9.04    avg(sdx write) = 1.42

Host zm02.stanford.edu: Disk IOPs: /dev/dm-0

avg(dm-0 read) = 20.02    avg(dm-0 write) = 112.92

Host zm02.stanford.edu: Disk IOPs: /dev/dm-1

avg(dm-1 read) = 37.55    avg(dm-1 write) = 26.75

Host zm02.stanford.edu: Disk IOPs: /dev/dm-2

avg(dm-2 read) = 21.67    avg(dm-2 write) = 129.95

Host zm02.stanford.edu: Disk Partition Throughput: /dev/sda1 mounted on /

avg(sda1 read) = 25.65    avg(sda1 write) = 40.87

Host zm02.stanford.edu: Disk Partition Throughput: /dev/sda2 mounted on /usr/vice/cache

avg(sda2 read) = 0.06    avg(sda2 write) = 0.36

Host zm02.stanford.edu: Disk Partition IOPs: /dev/sda1 mounted on /

avg(sda1 tps) = 12.00

Host zm02.stanford.edu: Disk Partition IOPs: /dev/sda2 mounted on /usr/vice/cache

avg(sda2 tps) = 0.10

Host zm02.stanford.edu: Total file descriptors open

avg(file descriptors open) = 6429.55

Host zm02.stanford.edu: SOAP: Invocation Count: Summary

avg(AnnounceOrganizerChangeRequest) = 1.00    avg(ConvActionRequest.!read) = 1.42    avg(ModifyTaskRequest) = 1.00    avg(MsgActionRequest.move) = 2.51    avg(ModifyAppointmentRequest) = 1.28    avg(GetMiniCalRequest) = 4.86    avg(ConvActionRequest.!flag) = 1.10    avg(ImportContactsRequest) = 1.00    avg(ModifyIdentityRequest) = 1.17    avg(GetMsgMetadataRequest) = 1.00    avg(CreateFolderRequest) = 1.79    avg(FolderActionRequest.trash) = 1.20    avg(SearchRequest) = 19.07    avg(SendMsgRequest) = 2.35    avg(GetContactsRequest) = 3.08    avg(AutoCompleteGalRequest) = 2.53    avg(ImportAppointmentsRequest) = 2.33    avg(CreateSignatureRequest) = 1.00    avg(MsgActionRequest.delete) = 1.39    avg(NoOpRequest) = 31.13    avg(BackupQueryRequest) = 1.00    avg(CreateMountpointRequest) = 1.10    avg(ICalReplyRequest) = 1.12    avg(ItemActionRequest.tag) = 1.12    avg(GetInfoRequest) = 6.43    avg(MsgActionRequest.trash) = 1.35    avg(ConvActionRequest.trash) = 3.27    avg(GetFreeBusyRequest) = 2.55    avg(MsgActionRequest.!flag) = 1.00    avg(CreateWaitSetRequest) = 1.00    avg(ConvActionRequest.update) = 1.00    avg(GetRulesRequest) = 1.11    avg(EndSessionRequest) = 1.98    avg(CancelTaskRequest) = 1.50    avg(CreateTagRequest) = 1.00    avg(SyncGalRequest) = 1.10    avg(MsgActionRequest.update) = 2.22    avg(CreateAppointmentExceptionRequest) = 1.00    avg(GetTaskRequest) = 7.00    avg(TagActionRequest.delete) = 1.00    avg(WaitSetRequest) = 2.04    avg(SaveDraftRequest) = 1.72    avg(CheckSpellingRequest) = 1.07    avg(CancelAppointmentRequest) = 1.32    avg(MsgActionRequest.flag) = 1.08    avg(AddMsgRequest) = 1.22    avg(GetDomainInfoRequest) = 4.46    avg(ModifyContactRequest) = 2.82    avg(GetMsgRequest) = 56.94    avg(MsgActionRequest.read) = 1.65    avg(GetAccountRequest) = 1.00    avg(FolderActionRequest.delete) = 2.84    avg(GetAvailableCsvFormatsRequest) = 1.04    avg(DismissCalendarItemAlarmRequest) = 1.10    avg(MsgActionRequest.tag) = 1.00    avg(ConvActionRequest.read) = 1.09    avg(FolderActionRequest.color) = 1.40    avg(FolderActionRequest.!check) = 1.80    avg(CheckLicenseRequest) = 3.31    avg(SearchConvRequest) = 9.20    avg(FolderActionRequest.read) = 2.00    avg(GetAvailableSkinsRequest) = 1.07    avg(SendInviteReplyRequest) = 1.94    avg(SetAppointmentRequest) = 1.24    avg(GetFolderRequest) = 29.96    avg(ItemActionRequest.delete) = 4.00    avg(ConvActionRequest.tag) = 1.89    avg(GetAvailableLocalesRequest) = 1.04    avg(CreateSearchFolderRequest) = 1.20    avg(SaveRulesRequest) = 1.25    avg(GetAccountInfoRequest) = 1.00    avg(ConvActionRequest.delete) = 2.71    avg(CreateTaskRequest) = 1.06    avg(FolderActionRequest.!grant) = 1.00    avg(SearchGalRequest) = 1.65    avg(SyncRequest) = 10.38    avg(ConvActionRequest.move) = 1.57    avg(ModifyPrefsRequest) = 1.08    avg(MsgActionRequest.!read) = 1.00    avg(FolderActionRequest.move) = 3.20    avg(FolderActionRequest.empty) = 1.12    avg(FolderActionRequest.grant) = 1.29    avg(DelegateAuthRequest) = 1.00    avg(AuthRequest) = 4.56    avg(ModifySignatureRequest) = 1.00    avg(ConvActionRequest.spam) = 1.08    avg(BackupRequest) = 1.00    avg(GetAppointmentRequest) = 106.86    avg(ContactActionRequest.move) = 15.23    avg(ConvActionRequest.flag) = 1.26    avg(GetPermissionRequest) = 1.03    avg(CreateAppointmentRequest) = 1.26    avg(SearchCalendarResourcesRequest) = 2.39    avg(GetQuotaUsageRequest) = 1.00    avg(CreateContactRequest) = 1.21    avg(FolderActionRequest.check) = 1.57    avg(FolderActionRequest.rename) = 2.10    avg(MsgActionRequest.spam) = 1.00    avg(ItemActionRequest.move) = 2.10

Host zm02.stanford.edu: SOAP: Average Call Duration: Summary

avg(AnnounceOrganizerChangeRequest) = 1192.50    avg(ConvActionRequest.!read) = 15.75    avg(ModifyTaskRequest) = 71.60    avg(MsgActionRequest.move) = 23.39    avg(ModifyAppointmentRequest) = 1456.31    avg(GetMiniCalRequest) = 1944.35    avg(ConvActionRequest.!flag) = 15.70    avg(ImportContactsRequest) = 1143.67    avg(ModifyIdentityRequest) = 89.50    avg(GetMsgMetadataRequest) = 7.00    avg(CreateFolderRequest) = 15.71    avg(FolderActionRequest.trash) = 20.40    avg(SearchRequest) = 321.56    avg(SendMsgRequest) = 427.37    avg(GetContactsRequest) = 29.31    avg(AutoCompleteGalRequest) = 1356.13    avg(ImportAppointmentsRequest) = 267.17    avg(CreateSignatureRequest) = 46.00    avg(MsgActionRequest.delete) = 22.12    avg(NoOpRequest) = 0.02    avg(BackupQueryRequest) = 366.00    avg(CreateMountpointRequest) = 100.67    avg(ICalReplyRequest) = 46.12    avg(ItemActionRequest.tag) = 15.25    avg(GetInfoRequest) = 128.85    avg(MsgActionRequest.trash) = 131.24    avg(ConvActionRequest.trash) = 46.57    avg(GetFreeBusyRequest) = 4337.71    avg(MsgActionRequest.!flag) = 35.67    avg(CreateWaitSetRequest) = 54.00    avg(ConvActionRequest.update) = 16.00    avg(GetRulesRequest) = 1.10    avg(EndSessionRequest) = 34.92    avg(CancelTaskRequest) = 181.50    avg(CreateTagRequest) = 36.67    avg(SyncGalRequest) = 130576.88    avg(MsgActionRequest.update) = 17.53    avg(CreateAppointmentExceptionRequest) = 193.00    avg(GetTaskRequest) = 30.67    avg(TagActionRequest.delete) = 1932.00    avg(WaitSetRequest) = 130.47    avg(SaveDraftRequest) = 285.87    avg(CheckSpellingRequest) = 70.51    avg(CancelAppointmentRequest) = 372.25    avg(MsgActionRequest.flag) = 13.50    avg(AddMsgRequest) = 84.42    avg(GetDomainInfoRequest) = 146.69    avg(ModifyContactRequest) = 25.38    avg(GetMsgRequest) = 54.34    avg(MsgActionRequest.read) = 16.80    avg(GetAccountRequest) = 1.50    avg(FolderActionRequest.delete) = 35.37    avg(GetAvailableCsvFormatsRequest) = 0.06    avg(DismissCalendarItemAlarmRequest) = 23.73    avg(MsgActionRequest.tag) = 10.50    avg(ConvActionRequest.read) = 44.68    avg(FolderActionRequest.color) = 12.50    avg(FolderActionRequest.!check) = 74.50    avg(CheckLicenseRequest) = 1.12    avg(SearchConvRequest) = 117.54    avg(FolderActionRequest.read) = 510.00    avg(GetAvailableSkinsRequest) = 0.12    avg(SendInviteReplyRequest) = 335.82    avg(SetAppointmentRequest) = 58.59    avg(GetFolderRequest) = 36.36    avg(ItemActionRequest.delete) = 7.00    avg(ConvActionRequest.tag) = 13.33    avg(GetAvailableLocalesRequest) = 1.93    avg(CreateSearchFolderRequest) = 18.40    avg(SaveRulesRequest) = 55.75    avg(GetAccountInfoRequest) = 16.32    avg(ConvActionRequest.delete) = 268.17    avg(CreateTaskRequest) = 53.39    avg(FolderActionRequest.!grant) = 14.00    avg(SearchGalRequest) = 5094.64    avg(SyncRequest) = 14.80    avg(ConvActionRequest.move) = 19.90    avg(ModifyPrefsRequest) = 56.85    avg(MsgActionRequest.!read) = 14.38    avg(FolderActionRequest.move) = 11.60    avg(FolderActionRequest.empty) = 474.95    avg(FolderActionRequest.grant) = 29.71    avg(DelegateAuthRequest) = 1.20    avg(AuthRequest) = 10.92    avg(ModifySignatureRequest) = 101.33    avg(ConvActionRequest.spam) = 27.27    avg(BackupRequest) = 154834.50    avg(GetAppointmentRequest) = 49.65    avg(ContactActionRequest.move) = 20.15    avg(ConvActionRequest.flag) = 77.17    avg(GetPermissionRequest) = 0.77    avg(CreateAppointmentRequest) = 284.59    avg(SearchCalendarResourcesRequest) = 61.03    avg(GetQuotaUsageRequest) = 1426.00    avg(CreateContactRequest) = 58.85    avg(FolderActionRequest.check) = 113.84    avg(FolderActionRequest.rename) = 27.30    avg(MsgActionRequest.spam) = 16.25    avg(ItemActionRequest.move) = 14.00

Host zm02.stanford.edu: MySQL: InnoDB Buffer Pool Pages

avg(pages read) = 1905911.35    avg(pages written) = 1941825.83

Host zm02.stanford.edu: MySQL: InnoDB Buffer Pool Hit Rate

avg(buffer pool hit rate) = 999.48

Host zm02.stanford.edu: MySQL: Database Connections

avg(connection pool size) = 0.35

Host zm02.stanford.edu: MySQL: Tables Open/Opened

avg(open_tables) = 452.00    avg(opened_tables (cumulative)) = 4748.98

Host zm02.stanford.edu: MySQL: Total Slow Queries Count

avg(slow queries (cumulative)) = 9036.94

Host zm02.stanford.edu: Mailboxd: Connection Pool Get Latency

avg(mysql) = 1.15    avg(ldap) = 17.29

Host zm02.stanford.edu: Mailboxd: Dirty Lucene Index Writers

avg(dirty index writers) = 99.67

Host zm02.stanford.edu: Mailboxd: Lucene IndexWriterCache Hitrate

avg(cache hitrate) = 39.25

Host zm02.stanford.edu: Mailboxd: Lucene IO

avg(Index writes) = 2674.52    avg(Index reads) = 3605.94

Host zm02.stanford.edu: Mailboxd: LMTP Delivery Throughput

avg(received) = 34.65    avg(delivered) = 35.28

Host zm02.stanford.edu: Mailboxd: LMTP Delivery Rate

avg(received msgs) = 0.82    avg(delivered msgs) = 0.82    avg(received x rcpts) = 0.82

Host zm02.stanford.edu: Mailboxd: Mailbox Add Rate (Delivery Rate)

avg(mailbox add rate) = 0.75

Host zm02.stanford.edu: Mailboxd: Mailbox Add Latency (Delivery Speed)

avg(mailbox add latency) = 156.69

Host zm02.stanford.edu: Mailboxd: Request Rate by Client Protocol

avg(SOAP) = 4.89    avg(IMAP) = 23.47    avg(POP) = 5.27

Host zm02.stanford.edu: Mailboxd: Response Time by Client Protocol

avg(SOAP) = 280.99    avg(IMAP) = 23.78    avg(POP) = 43.78

Host zm02.stanford.edu: Mailboxd: Active Connections by Client Protocol

avg(IMAP) = 7.58    avg(IMAP SSL) = 420.22    avg(POP) = 0.01    avg(POP SSL) = 5.58

Host zm02.stanford.edu: Mailboxd: Mailbox Get Count

avg(mailbox get count) = 2173.18

Host zm02.stanford.edu: Mailboxd: Mailbox Get Latency

avg(mailbox get latency) = 0.08

Host zm02.stanford.edu: Mailboxd: Mailbox Cache Hit Rate

avg(mailbox cache hit rate) = 99.93

Host zm02.stanford.edu: Mailboxd: Mailbox Item/Blob Cache Hit Rate

avg(msg blob cache) = 5050.20    avg(item metadata cache) = 3268.13

Host zm02.stanford.edu: Mailboxd: Garbage Collection Time

avg(minor GC time) = 1.19    avg(major GC time) = 0.90

Host zm02.stanford.edu: Mailboxd: Garbage Collection Count

avg(minor GC count) = 9.31    avg(major GC count) = 0.29

Host zm02.stanford.edu: Mailboxd: JVM Heap Used

avg(total) = 3993.34    avg(PS Old Gen) = 3143.44    avg(PS Eden Space) = 747.56    avg(PS Survivor Space) = 102.34

Host zm02.stanford.edu: Mailboxd: JVM Heap Free

avg(total free) = 2094.27    avg(PS Old Gen free) = 1128.56    avg(PS Eden Space free) = 770.74    avg(PS Survivor Space free) = 194.96

Host zm02.stanford.edu: Mailboxd: JVM Permanent Generation and Code Cache

avg(PS Perm Gen) = 72.98    avg(Code Cache) = 37.74    avg(PS Perm Gen free) = 0.29    avg(Code Cache free) = 0.25

No data available for the following charts:

Host zm02.stanford.edu: Process CPU Host zm02.stanford.edu: Process Total Memory Host zm02.stanford.edu: Process Resident Memory Host zm02.stanford.edu: Disk Throughput: /dev/sdb Host zm02.stanford.edu: Disk Throughput: /dev/sdc Host zm02.stanford.edu: Disk Throughput: /dev/sde Host zm02.stanford.edu: Disk Throughput: /dev/sdf Host zm02.stanford.edu: Disk Throughput: /dev/sdj Host zm02.stanford.edu: Disk Throughput: /dev/sdm Host zm02.stanford.edu: Disk Throughput: /dev/sdn Host zm02.stanford.edu: Disk Throughput: /dev/sdo Host zm02.stanford.edu: Disk Throughput: /dev/sdq Host zm02.stanford.edu: Disk Throughput: /dev/sdr Host zm02.stanford.edu: Disk Throughput: /dev/sdv Host zm02.stanford.edu: Disk Throughput: /dev/sdy Host zm02.stanford.edu: Disk IOPs: /dev/sdb Host zm02.stanford.edu: Disk IOPs: /dev/sdc Host zm02.stanford.edu: Disk IOPs: /dev/sde Host zm02.stanford.edu: Disk IOPs: /dev/sdf Host zm02.stanford.edu: Disk IOPs: /dev/sdj Host zm02.stanford.edu: Disk IOPs: /dev/sdm Host zm02.stanford.edu: Disk IOPs: /dev/sdn Host zm02.stanford.edu: Disk IOPs: /dev/sdo Host zm02.stanford.edu: Disk IOPs: /dev/sdq Host zm02.stanford.edu: Disk IOPs: /dev/sdr Host zm02.stanford.edu: Disk IOPs: /dev/sdv Host zm02.stanford.edu: Disk IOPs: /dev/sdy

Summary