diff options
Diffstat (limited to '')
| -rw-r--r-- | Documentation/accounting/Makefile | 10 | ||||
| -rw-r--r-- | Documentation/accounting/delay-accounting.txt | 11 | ||||
| -rw-r--r-- | Documentation/accounting/getdelays.c | 29 | ||||
| -rw-r--r-- | Documentation/accounting/taskstats-struct.txt | 9 |
4 files changed, 47 insertions, 12 deletions
diff --git a/Documentation/accounting/Makefile b/Documentation/accounting/Makefile new file mode 100644 index 000000000000..31929eb875b1 --- /dev/null +++ b/Documentation/accounting/Makefile @@ -0,0 +1,10 @@ +# kbuild trick to avoid linker error. Can be omitted if a module is built. +obj- := dummy.o + +# List of programs to build +hostprogs-y := getdelays + +# Tell kbuild to always build the programs +always := $(hostprogs-y) + +HOSTCFLAGS_getdelays.o += -I$(objtree)/usr/include diff --git a/Documentation/accounting/delay-accounting.txt b/Documentation/accounting/delay-accounting.txt index 1443cd71d263..8a12f0730c94 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 40121b5cca14..cc49400b4af8 100644 --- a/Documentation/accounting/getdelays.c +++ b/Documentation/accounting/getdelays.c @@ -196,14 +196,24 @@ 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, + (unsigned long long)t->cpu_count, + (unsigned long long)t->cpu_run_real_total, + (unsigned long long)t->cpu_run_virtual_total, + (unsigned long long)t->cpu_delay_total, + "count", "delay total", + (unsigned long long)t->blkio_count, + (unsigned long long)t->blkio_delay_total, + "count", "delay total", + (unsigned long long)t->swapin_count, + (unsigned long long)t->swapin_delay_total, "count", "delay total", - t->blkio_count, t->blkio_delay_total, - "count", "delay total", t->swapin_count, t->swapin_delay_total); + (unsigned long long)t->freepages_count, + (unsigned long long)t->freepages_delay_total); } void task_context_switch_counts(struct taskstats *t) @@ -211,14 +221,17 @@ void task_context_switch_counts(struct taskstats *t) printf("\n\nTask %15s%15s\n" " %15llu%15llu\n", "voluntary", "nonvoluntary", - t->nvcsw, t->nivcsw); + (unsigned long long)t->nvcsw, (unsigned long long)t->nivcsw); } void print_cgroupstats(struct cgroupstats *c) { printf("sleeping %llu, blocked %llu, running %llu, stopped %llu, " - "uninterruptible %llu\n", c->nr_sleeping, c->nr_io_wait, - c->nr_running, c->nr_stopped, c->nr_uninterruptible); + "uninterruptible %llu\n", (unsigned long long)c->nr_sleeping, + (unsigned long long)c->nr_io_wait, + (unsigned long long)c->nr_running, + (unsigned long long)c->nr_stopped, + (unsigned long long)c->nr_uninterruptible); } diff --git a/Documentation/accounting/taskstats-struct.txt b/Documentation/accounting/taskstats-struct.txt index cd784f46bf8a..e7512c061c15 100644 --- a/Documentation/accounting/taskstats-struct.txt +++ b/Documentation/accounting/taskstats-struct.txt @@ -6,7 +6,7 @@ This document contains an explanation of the struct taskstats fields. There are three different groups of fields in the struct taskstats: 1) Common and basic accounting fields - If CONFIG_TASKSTATS is set, the taskstats inteface is enabled and + If CONFIG_TASKSTATS is set, the taskstats interface is enabled and the common fields and basic accounting fields are collected for delivery at do_exit() of a task. 2) Delay accounting fields @@ -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; } |