)]}' { "log": [ { "commit": "6952b61de9984073289859073e8195ad0bee8fd5", "tree": "ce3336a0650f3be144f1c8ed3ab030a733919a82", "parents": [ "6423133bdee0e07d1c2f8411cb3fe676c207ba33" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Fri Sep 18 23:55:55 2009 +0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Sep 18 09:48:52 2009 -0700" }, "message": "headers: taskstats_kern.h trim\n\nRemove net/genetlink.h inclusion, now sched.c won\u0027t be recompiled\nbecause of some networking changes.\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "873b47717732c2f33a4b14de02571a4295a02f0c", "tree": "aaef0fe872dbd4ce5c290f3509e5db69f9a3f04a", "parents": [ "3e85ba034deec351f02cb55ff225bbd616463841" ], "author": { "name": "Keika Kobayashi", "email": "kobayashi.kk@ncos.nec.co.jp", "time": "Fri Jul 25 01:48:52 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jul 25 10:53:47 2008 -0700" }, "message": "per-task-delay-accounting: add memory reclaim delay\n\nSometimes, application responses become bad under heavy memory load.\nApplications take a bit time to reclaim memory. The statistics, how long\nmemory reclaim takes, will be useful to measure memory usage.\n\nThis patch adds accounting memory reclaim to per-task-delay-accounting for\naccounting the time of do_try_to_free_pages().\n\n\u003ci.e\u003e\n\n- When System is under low memory load,\n memory reclaim may not occur.\n\n$ free\n total used free shared buffers cached\nMem: 8197800 1577300 6620500 0 4808 1516724\n-/+ buffers/cache: 55768 8142032\nSwap: 16386292 0 16386292\n\n$ vmstat 1\nprocs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----\n r b swpd free buff cache si so bi bo in cs us sy id wa\n 0 0 0 5069748 10612 3014060 0 0 0 0 3 26 0 0 100 0\n 0 0 0 5069748 10612 3014060 0 0 0 0 4 22 0 0 100 0\n 0 0 0 5069748 10612 3014060 0 0 0 0 3 18 0 0 100 0\n\nMeasure the time of tar command.\n\n$ ls -s test.dat\n1501472 test.dat\n\n$ time tar cvf test.tar test.dat\nreal 0m13.388s\nuser 0m0.116s\nsys 0m5.304s\n\n$ ./delayget -d -p \u003cpid\u003e\nCPU count real total virtual total delay total\n 428 5528345500 5477116080 62749891\nIO count delay total\n 338 8078977189\nSWAP count delay total\n 0 0\nRECLAIM count delay total\n 0 0\n\n- When system is under heavy memory load\n memory reclaim may occur.\n\n$ vmstat 1\nprocs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----\n r b swpd free buff cache si so bi bo in cs us sy id wa\n 0 0 7159032 49724 1812 3012 0 0 0 0 3 24 0 0 100 0\n 0 0 7159032 49724 1812 3012 0 0 0 0 4 24 0 0 100 0\n 0 0 7159032 49848 1812 3012 0 0 0 0 3 22 0 0 100 0\n\nIn this case, one process uses more 8G memory\nby execution of malloc() and memset().\n\n$ time tar cvf test.tar test.dat\nreal 1m38.563s \u003c- increased by 85 sec\nuser 0m0.140s\nsys 0m7.060s\n\n$ ./delayget -d -p \u003cpid\u003e\nCPU count real total virtual total delay total\n 9021 7140446250 7315277975 923201824\nIO count delay total\n 8965 90466349669\nSWAP count delay total\n 3 21036367\nRECLAIM count delay total\n 740 61011951153\n\nIn the later case, the value of RECLAIM is increasing.\nSo, taskstats can show how much memory reclaim influences TAT.\n\nSigned-off-by: Keika Kobayashi \u003ckobayashi.kk@ncos.nec.co.jp\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nAcked-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujistu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "846c7bb055747989891f5cd2bb6e8d56243ba1e7", "tree": "e044041366efa8298157c4ae86615d68d30dd6d2", "parents": [ "c2e2c7fa1cb2cf2b114a6c9bc132b6601db5a7c8" ], "author": { "name": "Balbir Singh", "email": "balbir@linux.vnet.ibm.com", "time": "Thu Oct 18 23:39:44 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Oct 19 11:53:36 2007 -0700" }, "message": "Add cgroupstats\n\nThis patch is inspired by the discussion at\nhttp://lkml.org/lkml/2007/4/11/187 and implements per cgroup statistics\nas suggested by Andrew Morton in http://lkml.org/lkml/2007/4/11/263. The\npatch is on top of 2.6.21-mm1 with Paul\u0027s cgroups v9 patches (forward\nported)\n\nThis patch implements per cgroup statistics infrastructure and re-uses\ncode from the taskstats interface. A new set of cgroup operations are\nregistered with commands and attributes. It should be very easy to\n*extend* per cgroup statistics, by adding members to the cgroupstats\nstructure.\n\nThe current model for cgroupstats is a pull, a push model (to post\nstatistics on interesting events), should be very easy to add. Currently\nuser space requests for statistics by passing the cgroup file\ndescriptor. Statistics about the state of all the tasks in the cgroup\nis returned to user space.\n\nTODO\u0027s/NOTE:\n\nThis patch provides an infrastructure for implementing cgroup statistics.\nBased on the needs of each controller, we can incrementally add more statistics,\nevent based support for notification of statistics, accumulation of taskstats\ninto cgroup statistics in the future.\n\nSample output\n\n# ./cgroupstats -C /cgroup/a\nsleeping 2, blocked 0, running 1, stopped 0, uninterruptible 0\n\n# ./cgroupstats -C /cgroup/\nsleeping 154, blocked 0, running 0, stopped 0, uninterruptible 0\n\nIf the approach looks good, I\u0027ll enhance and post the user space utility for\nthe same\n\nFeedback, comments, test results are always welcome!\n\n[akpm@linux-foundation.org: build fix]\nSigned-off-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Jay Lan \u003cjlan@engr.sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e18b890bb0881bbab6f4f1a6cd20d9c60d66b003", "tree": "4828be07e1c24781c264b42c5a75bcd968223c3f", "parents": [ "441e143e95f5aa1e04026cb0aa71c801ba53982f" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Dec 06 20:33:20 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:25 2006 -0800" }, "message": "[PATCH] slab: remove kmem_cache_t\n\nReplace all uses of kmem_cache_t with struct kmem_cache.\n\nThe patch was generated using the following script:\n\n\t#!/bin/sh\n\t#\n\t# Replace one string by another in all the kernel sources.\n\t#\n\n\tset -e\n\n\tfor file in `find * -name \"*.c\" -o -name \"*.h\"|xargs grep -l $1`; do\n\t\tquilt add $file\n\t\tsed -e \"1,\\$s/$1/$2/g\" $file \u003e/tmp/$$\n\t\tmv /tmp/$$ $file\n\t\tquilt refresh\n\tdone\n\nThe script was run like this\n\n\tsh replace kmem_cache_t \"struct kmem_cache\"\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "35df17c57cecb08f0120fb18926325f1093dc429", "tree": "dc79780b3133e55dc591e35238fdb313e8e0219e", "parents": [ "30f3174d1c506db2c6d2c1dddc9c064e741d6b76" ], "author": { "name": "Shailabh Nagar", "email": "nagar@watson.ibm.com", "time": "Thu Aug 31 21:27:38 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Sep 01 11:39:08 2006 -0700" }, "message": "[PATCH] task delay accounting fixes\n\nCleanup allocation and freeing of tsk-\u003edelays used by delay accounting.\nThis solves two problems reported for delay accounting:\n\n1. oops in __delayacct_blkio_ticks\nhttp://www.uwsg.indiana.edu/hypermail/linux/kernel/0608.2/1844.html\n\nCurrently tsk-\u003edelays is getting freed too early in task exit which can\ncause a NULL tsk-\u003edelays to get accessed via reading of /proc/\u003ctgid\u003e/stats.\n The patch fixes this problem by freeing tsk-\u003edelays closer to when\ntask_struct itself is freed up. As a result, it also eliminates the use of\ntsk-\u003edelays_lock which was only being used (inadequately) to safeguard\naccess to tsk-\u003edelays while a task was exiting.\n\n2. Possible memory leak in kernel/delayacct.c\nhttp://www.uwsg.indiana.edu/hypermail/linux/kernel/0608.2/1389.html\n\nThe patch cleans up tsk-\u003edelays allocations after a bad fork which was\nmissing earlier.\n\nThe patch has been tested to fix the problems listed above and stress\ntested with rapid calls to delay accounting\u0027s taskstats command interface\n(which is the other path that can access the same data, besides the /proc\ninterface causing the oops above).\n\nSigned-off-by: Shailabh Nagar \u003cnagar@watson.ibm.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "163ecdff060f2fa9e8f5238882fd0137493556a6", "tree": "955aa8397edf1ddc64a2429bc2986331c286e47c", "parents": [ "d94a041519f3ab1ac023bf917619cd8c4a7d3c01" ], "author": { "name": "Shailabh Nagar", "email": "nagar@watson.ibm.com", "time": "Sun Jul 30 03:03:11 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jul 31 13:28:37 2006 -0700" }, "message": "[PATCH] delay accounting: temporarily enable by default\n\nEnable delay accounting by default so that feature gets coverage testing\nwithout requiring special measures.\n\nEarlier, it was off by default and had to be enabled via a boot time param.\n This patch reverses the default behaviour to improve coverage testing. It\ncan be removed late in the kernel development cycle if its believed users\nshouldn\u0027t have to incur any cost if they don\u0027t want delay accounting. Or\nit can be retained forever if the utility of the stats is deemed common\nenough to warrant keeping the feature on.\n\nSigned-off-by: Shailabh Nagar \u003cnagar@watson.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7d94dddd438bcba97db44f120da39bb001b5249f", "tree": "edd737ba4e06ec086f0296a7d99a13e240c7ab93", "parents": [ "15a647eba94c3da27ccc666bea72e7cca06b2d19" ], "author": { "name": "Shailabh Nagar", "email": "nagar@watson.ibm.com", "time": "Sun Jul 30 03:03:10 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jul 31 13:28:37 2006 -0700" }, "message": "[PATCH] make taskstats sending completely independent of delay accounting on/off status\n\nComplete the separation of delay accounting and taskstats by ignoring the\nreturn value of delay accounting functions that fill in parts of taskstats\nbefore it is sent out (either in response to a command or as part of a task\nexit).\n\nAlso make delayacct_add_tsk return silently when delay accounting is turned\noff rather than treat it as an error.\n\nSigned-off-by: Shailabh Nagar \u003cnagar@watson.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "25890454667b3295f67b3372352be90705f8667c", "tree": "f66e24be59ced75853eb82709e3036e735aac21e", "parents": [ "a3baf649ca9ca0a96fba538f03b0f17c043b755c" ], "author": { "name": "Shailabh Nagar", "email": "nagar@watson.ibm.com", "time": "Fri Jul 14 00:24:43 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jul 14 21:53:57 2006 -0700" }, "message": "[PATCH] per-task-delay-accounting: /proc export of aggregated block I/O delays\n\nExport I/O delays seen by a task through /proc/\u003ctgid\u003e/stats for use in top\netc.\n\nNote that delays for I/O done for swapping in pages (swapin I/O) is clubbed\ntogether with all other I/O here (this is not the case in the netlink\ninterface where the swapin I/O is kept distinct)\n\n[akpm@osdl.org: printk warning fix]\nSigned-off-by: Shailabh Nagar \u003cnagar@watson.ibm.com\u003e\nSigned-off-by: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Jes Sorensen \u003cjes@sgi.com\u003e\nCc: Peter Chubb \u003cpeterc@gelato.unsw.edu.au\u003e\nCc: Erich Focht \u003cefocht@ess.nec.de\u003e\nCc: Levent Serinol \u003clserinol@gmail.com\u003e\nCc: Jay Lan \u003cjlan@engr.sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6f44993fe1d7b2b097f6ac60cd5835c6f5ca0874", "tree": "0f349f4e6c28cc5d11b7083273543a294c437216", "parents": [ "c757249af152c59fd74b85e52e8c090acb33d9c0" ], "author": { "name": "Shailabh Nagar", "email": "nagar@watson.ibm.com", "time": "Fri Jul 14 00:24:41 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jul 14 21:53:56 2006 -0700" }, "message": "[PATCH] per-task-delay-accounting: delay accounting usage of taskstats interface\n\nUsage of taskstats interface by delay accounting.\n\nSigned-off-by: Shailabh Nagar \u003cnagar@us.ibm.com\u003e\nSigned-off-by: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Jes Sorensen \u003cjes@sgi.com\u003e\nCc: Peter Chubb \u003cpeterc@gelato.unsw.edu.au\u003e\nCc: Erich Focht \u003cefocht@ess.nec.de\u003e\nCc: Levent Serinol \u003clserinol@gmail.com\u003e\nCc: Jay Lan \u003cjlan@engr.sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0ff922452df86f3e9a2c6f705c4588ec62d096a7", "tree": "ac84041bfb63f12d0e2db733c46b2cd2438b4882", "parents": [ "ca74e92b4698276b6696f15a801759f50944f387" ], "author": { "name": "Shailabh Nagar", "email": "nagar@watson.ibm.com", "time": "Fri Jul 14 00:24:37 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jul 14 21:53:56 2006 -0700" }, "message": "[PATCH] per-task-delay-accounting: sync block I/O and swapin delay collection\n\nUnlike earlier iterations of the delay accounting patches, now delays are only\ncollected for the actual I/O waits rather than try and cover the delays seen\nin I/O submission paths.\n\nAccount separately for block I/O delays incurred as a result of swapin page\nfaults whose frequency can be affected by the task/process\u0027 rss limit. Hence\nswapin delays can act as feedback for rss limit changes independent of I/O\npriority changes.\n\nSigned-off-by: Shailabh Nagar \u003cnagar@watson.ibm.com\u003e\nSigned-off-by: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Jes Sorensen \u003cjes@sgi.com\u003e\nCc: Peter Chubb \u003cpeterc@gelato.unsw.edu.au\u003e\nCc: Erich Focht \u003cefocht@ess.nec.de\u003e\nCc: Levent Serinol \u003clserinol@gmail.com\u003e\nCc: Jay Lan \u003cjlan@engr.sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ca74e92b4698276b6696f15a801759f50944f387", "tree": "26f0de66d8207608e07ee22389bfc173e773c0c2", "parents": [ "e8f4d97e1b58b50ad6449bb2d35e6632c0236abd" ], "author": { "name": "Shailabh Nagar", "email": "nagar@watson.ibm.com", "time": "Fri Jul 14 00:24:36 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jul 14 21:53:56 2006 -0700" }, "message": "[PATCH] per-task-delay-accounting: setup\n\nInitialization code related to collection of per-task \"delay\" statistics which\nmeasure how long it had to wait for cpu, sync block io, swapping etc. The\ncollection of statistics and the interface are in other patches. This patch\nsets up the data structures and allows the statistics collection to be\ndisabled through a kernel boot parameter.\n\nSigned-off-by: Shailabh Nagar \u003cnagar@watson.ibm.com\u003e\nSigned-off-by: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Jes Sorensen \u003cjes@sgi.com\u003e\nCc: Peter Chubb \u003cpeterc@gelato.unsw.edu.au\u003e\nCc: Erich Focht \u003cefocht@ess.nec.de\u003e\nCc: Levent Serinol \u003clserinol@gmail.com\u003e\nCc: Jay Lan \u003cjlan@engr.sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" } ] }