diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-07-26 15:30:40 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-26 15:30:40 +0200 |
commit | 1503af661947b7a4a09355cc2ae6aa0d43f16776 (patch) | |
tree | 5bfcfadf2dd2d98c2ad251c96d7ee43a6903819a /Documentation/accounting | |
parent | a31863168660c6b6f6c7ffe05bb6a38e97803326 (diff) | |
parent | 024e8ac04453b3525448c31ef39848cf675ba6db (diff) |
Merge branch 'linus' into x86/header-guards
Conflicts:
include/asm-x86/gpio.h
include/asm-x86/ide.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/accounting')
-rw-r--r-- | Documentation/accounting/delay-accounting.txt | 11 | ||||
-rw-r--r-- | Documentation/accounting/getdelays.c | 8 | ||||
-rw-r--r-- | Documentation/accounting/taskstats-struct.txt | 7 |
3 files changed, 21 insertions, 5 deletions
diff --git a/Documentation/accounting/delay-accounting.txt b/Documentation/accounting/delay-accounting.txt index 1443cd71d26..8a12f0730c9 100644 --- a/Documentation/accounting/delay-accounting.txt +++ b/Documentation/accounting/delay-accounting.txt @@ -11,6 +11,7 @@ the delays experienced by a task while a) waiting for a CPU (while being runnable) b) completion of synchronous block I/O initiated by the task c) swapping in pages +d) memory reclaim and makes these statistics available to userspace through the taskstats interface. @@ -41,7 +42,7 @@ this structure. See include/linux/taskstats.h for a description of the fields pertaining to delay accounting. It will generally be in the form of counters returning the cumulative -delay seen for cpu, sync block I/O, swapin etc. +delay seen for cpu, sync block I/O, swapin, memory reclaim etc. Taking the difference of two successive readings of a given counter (say cpu_delay_total) for a task will give the delay @@ -94,7 +95,9 @@ CPU count real total virtual total delay total 7876 92005750 100000000 24001500 IO count delay total 0 0 -MEM count delay total +SWAP count delay total + 0 0 +RECLAIM count delay total 0 0 Get delays seen in executing a given simple command @@ -108,5 +111,7 @@ CPU count real total virtual total delay total 6 4000250 4000000 0 IO count delay total 0 0 -MEM count delay total +SWAP count delay total + 0 0 +RECLAIM count delay total 0 0 diff --git a/Documentation/accounting/getdelays.c b/Documentation/accounting/getdelays.c index 40121b5cca1..3f7755f3963 100644 --- a/Documentation/accounting/getdelays.c +++ b/Documentation/accounting/getdelays.c @@ -196,14 +196,18 @@ void print_delayacct(struct taskstats *t) " %15llu%15llu%15llu%15llu\n" "IO %15s%15s\n" " %15llu%15llu\n" - "MEM %15s%15s\n" + "SWAP %15s%15s\n" + " %15llu%15llu\n" + "RECLAIM %12s%15s\n" " %15llu%15llu\n", "count", "real total", "virtual total", "delay total", t->cpu_count, t->cpu_run_real_total, t->cpu_run_virtual_total, t->cpu_delay_total, "count", "delay total", t->blkio_count, t->blkio_delay_total, - "count", "delay total", t->swapin_count, t->swapin_delay_total); + "count", "delay total", t->swapin_count, t->swapin_delay_total, + "count", "delay total", + t->freepages_count, t->freepages_delay_total); } void task_context_switch_counts(struct taskstats *t) diff --git a/Documentation/accounting/taskstats-struct.txt b/Documentation/accounting/taskstats-struct.txt index cd784f46bf8..b988d110db5 100644 --- a/Documentation/accounting/taskstats-struct.txt +++ b/Documentation/accounting/taskstats-struct.txt @@ -26,6 +26,8 @@ There are three different groups of fields in the struct taskstats: 5) Time accounting for SMT machines +6) Extended delay accounting fields for memory reclaim + Future extension should add fields to the end of the taskstats struct, and should not change the relative position of each field within the struct. @@ -170,4 +172,9 @@ struct taskstats { __u64 ac_utimescaled; /* utime scaled on frequency etc */ __u64 ac_stimescaled; /* stime scaled on frequency etc */ __u64 cpu_scaled_run_real_total; /* scaled cpu_run_real_total */ + +6) Extended delay accounting fields for memory reclaim + /* Delay waiting for memory reclaim */ + __u64 freepages_count; + __u64 freepages_delay_total; } |