| /Linux-v5.15/tools/testing/selftests/powerpc/pmu/ebb/ |
| D | instruction_count_test.c | 26 uint64_t overhead, bool report) in do_count_loop() argument
46 expected = instructions + overhead; in do_count_loop()
51 printf("Looped for %lu instructions, overhead %lu\n", instructions, overhead); in do_count_loop()
72 uint64_t current, overhead; in determine_overhead() local
76 overhead = event->result.value; in determine_overhead()
81 if (current < overhead) { in determine_overhead()
82 printf("Replacing overhead %lu with %lu\n", overhead, current); in determine_overhead()
83 overhead = current; in determine_overhead()
87 return overhead; in determine_overhead()
112 uint64_t overhead; in instruction_count() local
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| /Linux-v5.15/tools/testing/selftests/powerpc/pmu/ |
| D | count_instructions.c | 30 u64 overhead, bool report) in do_count_loop() argument
45 expected = instructions + overhead; in do_count_loop()
53 printf("Looped for %llu instructions, overhead %llu\n", instructions, overhead); in do_count_loop()
76 u64 current, overhead; in determine_overhead() local
80 overhead = events[0].result.value; in determine_overhead()
85 if (current < overhead) { in determine_overhead()
86 printf("Replacing overhead %llu with %llu\n", overhead, current); in determine_overhead()
87 overhead = current; in determine_overhead()
91 return overhead; in determine_overhead()
97 u64 overhead; in test_body() local
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| D | count_stcx_fail.c | 30 u64 overhead, bool report) in do_count_loop() argument
47 expected = instructions + overhead + (events[2].result.value * 10); in do_count_loop()
57 printf("Looped for %llu instructions, overhead %llu\n", instructions, overhead); in do_count_loop()
81 u64 current, overhead; in determine_overhead() local
85 overhead = events[0].result.value; in determine_overhead()
90 if (current < overhead) { in determine_overhead()
91 printf("Replacing overhead %llu with %llu\n", overhead, current); in determine_overhead()
92 overhead = current; in determine_overhead()
96 return overhead; in determine_overhead()
105 u64 overhead; in test_body() local
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| /Linux-v5.15/tools/perf/Documentation/ |
| D | callchain-overhead-calculation.txt | 1 Overhead calculation
3 The overhead can be shown in two columns as 'Children' and 'Self' when
4 perf collects callchains. The 'self' overhead is simply calculated by
7 'self' overhead values should be 100%.
9 The 'children' overhead is calculated by adding all period values of
10 the child functions so that it can show the total overhead of the
15 It might be confusing that the sum of all the 'children' overhead
17 'self' overhead of its child functions. But with this enabled, users
18 can find which function has the most overhead even if samples are
45 in the usual (self-overhead-only) output of perf report:
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| D | perf-config.txt | 185 'top' means a overhead percentage which is more than 5%.
190 'medium' means a overhead percentage which has more than 0.5%.
193 'normal' means the rest of overhead percentages
368 But if this option is 'false', percent values for overhead are printed i.e.
405 This option control the way to calculate overhead of filtered entries -
409 Overhead Symbols
415 This is an original overhead and we'll filter out the first 'foo'
416 entry. The value of 'relative' would increase the overhead of 'bar'
418 current overhead (33.33%).
422 This option controls display of column headers (like 'Overhead' and 'Symbol')
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| D | perf-report.txt | 47 the overhead column. See --percentage for more info.
57 the overhead column. See --percentage for more info.
62 the overhead column. See --percentage for more info.
100 - overhead: Overhead percentage of sample
101 - overhead_sys: Overhead percentage of sample running in system mode
102 - overhead_us: Overhead percentage of sample running in user mode
103 - overhead_guest_sys: Overhead percentage of sample running in system mode
105 - overhead_guest_us: Overhead percentage of sample running in user mode on
110 --time-quantum (default 100ms). Specify with overhead and before it.
143 executed, such as a memory access bottleneck. If a function has high overhead
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| D | perf-top.txt | 132 local_weight, abort, in_tx, transaction, overhead, sample, period.
138 overhead, overhead_sys, overhead_us, overhead_children, sample and period.
153 percentage of the overhead column. See --percentage for more info.
157 percentage of the overhead column. See --percentage for more info.
161 percentage of the overhead column. See --percentage for more info.
191 enabled. See the `overhead calculation' section for more details.
208 Do not show entries which have an overhead under that percent.
212 Determine how to display the overhead percentage of filtered entries.
315 Alternatively one can ask for --group and then two overhead columns
393 include::callchain-overhead-calculation.txt[]
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| /Linux-v5.15/drivers/net/fddi/skfp/ |
| D | ess.c | 100 static int process_bw_alloc(struct s_smc *smc, long int payload, long int overhead);
119 u_long payload, overhead ; in ess_raf_received_pack() local
257 overhead = ((struct smt_p_3210 *)p)->mib_overhead ; in ess_raf_received_pack()
259 DB_ESSN(2, "payload= %lx overhead= %lx", in ess_raf_received_pack()
260 payload, overhead); in ess_raf_received_pack()
265 (void)process_bw_alloc(smc,(long)payload,(long)overhead) ; in ess_raf_received_pack()
308 overhead = ((struct smt_p_3210 *)p)->mib_overhead ; in ess_raf_received_pack()
312 DB_ESSN(2, "payload= %lx overhead= %lx", in ess_raf_received_pack()
313 payload, overhead); in ess_raf_received_pack()
318 if(!process_bw_alloc(smc,(long)payload,(long)overhead)) in ess_raf_received_pack()
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| /Linux-v5.15/net/l2tp/ |
| D | l2tp_eth.c | 208 unsigned int overhead = 0; in l2tp_eth_adjust_mtu() local
214 overhead += sizeof(struct udphdr); in l2tp_eth_adjust_mtu()
223 /* L3 Overhead couldn't be identified, this could be in l2tp_eth_adjust_mtu()
230 /* Adjust MTU, factor overhead - underlay L3, overlay L2 hdr in l2tp_eth_adjust_mtu()
231 * UDP overhead, if any, was already factored in above. in l2tp_eth_adjust_mtu()
233 overhead += session->hdr_len + ETH_HLEN + l3_overhead; in l2tp_eth_adjust_mtu()
235 mtu = l2tp_tunnel_dst_mtu(tunnel) - overhead; in l2tp_eth_adjust_mtu()
237 dev->mtu = ETH_DATA_LEN - overhead; in l2tp_eth_adjust_mtu()
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| /Linux-v5.15/net/sctp/ |
| D | output.c | 58 * current overhead after sending packets. in sctp_packet_reset()
60 packet->size = packet->overhead; in sctp_packet_reset()
88 /* set packet max_size with pathmtu, then calculate overhead */ in sctp_packet_config()
95 packet->overhead = sctp_mtu_payload(sp, 0, 0); in sctp_packet_config()
96 packet->size = packet->overhead; in sctp_packet_config()
153 /* The overhead will be calculated by sctp_packet_config() */ in sctp_packet_init()
154 packet->overhead = 0; in sctp_packet_init()
220 int overhead = 0; in sctp_packet_bundle_pad() local
226 overhead += sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr); in sctp_packet_bundle_pad()
227 overhead += sizeof(struct sctp_sender_hb_info) + sizeof(struct sctp_pad_chunk); in sctp_packet_bundle_pad()
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| /Linux-v5.15/Documentation/vm/damon/ |
| D | design.rst | 11 and the overhead controllable. The fundamental access monitorings require
13 the other hand, the accuracy and overhead tradeoff mechanism, which is the core
49 mapping is not strictly required but could even incur a high overhead in some
117 The monitoring overhead of this mechanism will arbitrarily increase as the
124 To avoid the unbounded increase of the overhead, DAMON groups adjacent pages
131 overhead is controllable by setting the number of regions. DAMON allows users
153 In this way, DAMON provides its best-effort quality and minimal overhead while
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| D | index.rst | 12 - *light-weight* (the monitoring overhead is low enough to be applied online),
14 - *scalable* (the upper-bound of the overhead is in constant range regardless
19 that incurring high data accesses monitoring overhead could implemented again.
|
| D | faq.rst | 11 used online, any unnecessary overhead such as kernel - user space context
23 the overhead. On the other hand, DAMON is a higher-level framework for the
25 optimization and provides sophisticated accuracy/overhead handling mechanisms.
|
| /Linux-v5.15/tools/testing/selftests/seccomp/ |
| D | seccomp_benchmark.c | 206 ESTIMATE("total seccomp overhead for 1 bitmapped filter", calc, in main()
208 ESTIMATE("total seccomp overhead for 2 bitmapped filters", calc, in main()
210 ESTIMATE("total seccomp overhead for 3 full filters", calc, in main()
212 ESTIMATE("total seccomp overhead for 4 full filters", calc, in main()
214 ESTIMATE("seccomp entry overhead", entry, in main()
216 ESTIMATE("seccomp per-filter overhead (last 2 diff)", per_filter1, in main()
218 ESTIMATE("seccomp per-filter overhead (filters / 4)", per_filter2, in main()
|
| /Linux-v5.15/drivers/net/wireless/ralink/rt2x00/ |
| D | rt2x00crypto.c | 68 unsigned int overhead = 0; in rt2x00crypto_tx_overhead() local
71 return overhead; in rt2x00crypto_tx_overhead()
78 overhead += key->icv_len; in rt2x00crypto_tx_overhead()
81 overhead += key->iv_len; in rt2x00crypto_tx_overhead()
85 overhead += 8; in rt2x00crypto_tx_overhead()
88 return overhead; in rt2x00crypto_tx_overhead()
|
| /Linux-v5.15/kernel/trace/ |
| D | Kconfig | 96 Adds a very slight overhead to tracing when enabled.
171 (the bootup default), then the overhead of the instructions is very
253 then it will not have any overhead while the stack tracer
290 (Note that kernel size and overhead increase with this option
314 (Note that kernel size and overhead increase with this option
479 When this is enabled, this adds a little more overhead to the
484 and already adds the overhead (plus a lot more).
504 Either of the above profilers adds a bit of overhead to the system.
510 No branch profiling. Branch profiling adds a bit of overhead.
523 Note: this will add a significant overhead; only turn this
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| /Linux-v5.15/fs/freevxfs/ |
| D | vxfs_lookup.c | 108 int overhead = VXFS_DIRBLKOV(sbi, dbp); in vxfs_find_entry() local
110 pos += overhead; in vxfs_find_entry()
111 pg_ofs += overhead; in vxfs_find_entry()
259 int overhead = VXFS_DIRBLKOV(sbi, dbp); in vxfs_readdir() local
261 pos += overhead; in vxfs_readdir()
262 pg_ofs += overhead; in vxfs_readdir()
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| /Linux-v5.15/Documentation/driver-api/mmc/ |
| D | mmc-async-req.rst | 8 How significant is the cache maintenance overhead?
11 pre-fetch makes the cache overhead relatively significant. If the DMA
13 transfer, the DMA preparation overhead would not affect the MMC performance.
75 Pseudocode to handle is_first_req scenario with minimal prepare overhead::
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| /Linux-v5.15/drivers/net/fddi/skfp/h/ |
| D | smt.h | 485 * P18 : SBA Overhead Request
491 int sba_ov_req ; /* total sync bandwidth req for overhead*/
799 struct smt_p_3210 overhead ; /* current SBA overhead */ member
814 struct smt_p_0018 ov_req ; /* requested SBA overhead */
816 struct smt_p_3210 overhead ; /* current SBA overhead */ member
832 struct smt_p_3210 overhead ; /* current SBA overhead */ member
854 struct smt_p_3210 overhead ; /* current SBA overhead */ member
|
| D | sba.h | 84 long total_overhead ; /* Total Overhead */
92 long msg_sba_ov_req ; /* Overhead Request */
94 long msg_mib_ov ; /* Current Overhead for this Path*/
|
| /Linux-v5.15/kernel/ |
| D | Kconfig.preempt | 53 and a slight runtime overhead to kernel code.
96 The runtime overhead is negligible with HAVE_STATIC_CALL_INLINE enabled
98 then the potential overhead should be considered.
|
| /Linux-v5.15/include/net/sctp/ |
| D | sctp.h | 575 /* Calculate max payload size given a MTU, or the total overhead if
582 __u32 overhead = sizeof(struct sctphdr) + extra; in __sctp_mtu_payload() local
585 overhead += sp->pf->af->net_header_len; in __sctp_mtu_payload()
587 overhead += sizeof(struct udphdr); in __sctp_mtu_payload()
589 overhead += sizeof(struct ipv6hdr); in __sctp_mtu_payload()
592 if (WARN_ON_ONCE(mtu && mtu <= overhead)) in __sctp_mtu_payload()
593 mtu = overhead; in __sctp_mtu_payload()
595 return mtu ? mtu - overhead : overhead; in __sctp_mtu_payload()
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| /Linux-v5.15/arch/riscv/ |
| D | Kconfig.erratas | 10 that the overhead from this mechanism is just taken once.
20 Otherwise, please say "N" here to avoid unnecessary overhead.
|
| /Linux-v5.15/Documentation/virt/ |
| D | paravirt_ops.rst | 25 known that the overhead of indirect call isn't very important.
29 are called frequently and are performance critical. The overhead is
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| /Linux-v5.15/Documentation/usb/ |
| D | ohci.rst | 20 - improved robustness; bugfixes; and less overhead
30 to overhead in IRQ processing. When interrupt transfers are queued, those
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