| /linux-6.8/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-6.8/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-6.8/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 | 182 'top' means a overhead percentage which is more than 5%.
187 'medium' means a overhead percentage which has more than 0.5%.
190 'normal' means the rest of overhead percentages
372 But if this option is 'false', percent values for overhead are printed i.e.
409 This option control the way to calculate overhead of filtered entries -
413 Overhead Symbols
419 This is an original overhead and we'll filter out the first 'foo'
420 entry. The value of 'relative' would increase the overhead of 'bar'
422 current overhead (33.33%).
426 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.
150 executed, such as a memory access bottleneck. If a function has high overhead
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| D | perf-top.txt | 130 local_weight, abort, in_tx, transaction, overhead, sample, period.
136 overhead, overhead_sys, overhead_us, overhead_children, sample and period.
151 percentage of the overhead column. See --percentage for more info.
155 percentage of the overhead column. See --percentage for more info.
159 percentage of the overhead column. See --percentage for more info.
195 enabled. See the `overhead calculation' section for more details.
212 Do not show entries which have an overhead under that percent.
216 Determine how to display the overhead percentage of filtered entries.
323 Alternatively one can ask for a group and then two overhead columns
401 include::callchain-overhead-calculation.txt[]
|
| /linux-6.8/tools/testing/selftests/tc-testing/tc-tests/qdiscs/ |
| D | cake.json | 17 …th unlimited diffserv3 triple-isolate nonat nowash no-ack-filter split-gso rtt 100ms raw overhead",
38 …dwidth 1Kbit diffserv3 triple-isolate nonat nowash no-ack-filter split-gso rtt 100ms raw overhead",
59 …rate-ingress diffserv3 triple-isolate nonat nowash no-ack-filter split-gso rtt 100ms raw overhead",
80 …th unlimited diffserv3 triple-isolate nonat nowash no-ack-filter split-gso rtt 200us raw overhead",
101 …h unlimited besteffort triple-isolate nonat nowash no-ack-filter split-gso rtt 100ms raw overhead",
122 …th unlimited diffserv8 triple-isolate nonat nowash no-ack-filter split-gso rtt 100ms raw overhead",
143 …th unlimited diffserv4 triple-isolate nonat nowash no-ack-filter split-gso rtt 100ms raw overhead",
164 …ndwidth unlimited diffserv3 flowblind nonat nowash no-ack-filter split-gso rtt 100ms raw overhead",
185 …+ bandwidth unlimited diffserv3 dsthost nat nowash no-ack-filter split-gso rtt 100ms raw overhead",
206 …9]+ bandwidth unlimited diffserv3 hosts nonat wash no-ack-filter split-gso rtt 100ms raw overhead",
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| /linux-6.8/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-6.8/net/l2tp/ |
| D | l2tp_eth.c | 198 unsigned int overhead = 0; in l2tp_eth_adjust_mtu() local
204 overhead += sizeof(struct udphdr); in l2tp_eth_adjust_mtu()
213 /* L3 Overhead couldn't be identified, this could be in l2tp_eth_adjust_mtu()
220 /* Adjust MTU, factor overhead - underlay L3, overlay L2 hdr in l2tp_eth_adjust_mtu()
221 * UDP overhead, if any, was already factored in above. in l2tp_eth_adjust_mtu()
223 overhead += session->hdr_len + ETH_HLEN + l3_overhead; in l2tp_eth_adjust_mtu()
225 mtu = l2tp_tunnel_dst_mtu(tunnel) - overhead; in l2tp_eth_adjust_mtu()
227 dev->mtu = ETH_DATA_LEN - overhead; in l2tp_eth_adjust_mtu()
|
| /linux-6.8/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()
154 /* The overhead will be calculated by sctp_packet_config() */ in sctp_packet_init()
155 packet->overhead = 0; in sctp_packet_init()
221 int overhead = 0; in sctp_packet_bundle_pad() local
227 overhead += sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr); in sctp_packet_bundle_pad()
228 overhead += sizeof(struct sctp_sender_hb_info) + sizeof(struct sctp_pad_chunk); in sctp_packet_bundle_pad()
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| /linux-6.8/tools/testing/selftests/seccomp/ |
| D | seccomp_benchmark.c | 227 ESTIMATE("total seccomp overhead for 1 bitmapped filter", calc, in main()
229 ESTIMATE("total seccomp overhead for 2 bitmapped filters", calc, in main()
231 ESTIMATE("total seccomp overhead for 3 full filters", calc, in main()
233 ESTIMATE("total seccomp overhead for 4 full filters", calc, in main()
235 ESTIMATE("seccomp entry overhead", entry, in main()
237 ESTIMATE("seccomp per-filter overhead (last 2 diff)", per_filter1, in main()
239 ESTIMATE("seccomp per-filter overhead (filters / 4)", per_filter2, in main()
|
| /linux-6.8/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-6.8/fs/freevxfs/ |
| D | vxfs_lookup.c | 84 int overhead = VXFS_DIRBLKOV(sbi, dbp); in vxfs_find_entry() local
86 pos += overhead; in vxfs_find_entry()
87 pg_ofs += overhead; in vxfs_find_entry()
234 int overhead = VXFS_DIRBLKOV(sbi, dbp); in vxfs_readdir() local
236 pos += overhead; in vxfs_readdir()
237 pg_ofs += overhead; in vxfs_readdir()
|
| /linux-6.8/kernel/trace/ |
| D | Kconfig | 139 Adds a very slight overhead to tracing when enabled.
215 (the bootup default), then the overhead of the instructions is very
329 then it will not have any overhead while the stack tracer
366 (Note that kernel size and overhead increase with this option
390 (Note that kernel size and overhead increase with this option
557 When this is enabled, this adds a little more overhead to the
562 and already adds the overhead (plus a lot more).
582 Either of the above profilers adds a bit of overhead to the system.
588 No branch profiling. Branch profiling adds a bit of overhead.
601 Note: this will add a significant overhead; only turn this
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| /linux-6.8/Documentation/mm/damon/ |
| D | design.rst | 28 - Core: Implements core logics including monitoring overhead/accurach control
39 the given target address space. On the other hand, the accuracy and overhead
89 mapping is not strictly required but could even incur a high overhead in some
165 The monitoring overhead of this mechanism will arbitrarily increase as the
174 To avoid the unbounded increase of the overhead, DAMON groups adjacent pages
181 called ``nr_regions`` of the region. Therefore, the monitoring overhead is
204 In this way, DAMON provides its best-effort quality and minimal overhead while
320 DAMOS upper-bound overhead control feature. DAMOS could incur high overhead if
328 To mitigate that situation, DAMOS provides an upper-bound overhead control
393 checks the watermarks and therefore incurs nearly zero overhead.
|
| /linux-6.8/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::
|
| /linux-6.8/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-6.8/arch/riscv/ |
| D | Kconfig.errata | 11 Otherwise, please say "N" here to avoid unnecessary overhead.
32 Otherwise, please say "N" here to avoid unnecessary overhead.
83 Otherwise, please say "N" here to avoid unnecessary overhead.
|
| /linux-6.8/mm/ |
| D | Kconfig.debug | 35 By default this option will have a small overhead, e.g. by not
37 architectures. Even bigger overhead comes when the debugging is
142 kernel code. However the runtime performance overhead is virtually
222 feature will introduce an overhead to memory
276 overhead in the page fault path.
|
| /linux-6.8/kernel/ |
| D | Kconfig.preempt | 64 and a slight runtime overhead to kernel code.
111 The runtime overhead is negligible with HAVE_STATIC_CALL_INLINE enabled
113 then the potential overhead should be considered.
|
| /linux-6.8/include/net/sctp/ |
| D | sctp.h | 569 /* Calculate max payload size given a MTU, or the total overhead if
576 __u32 overhead = sizeof(struct sctphdr) + extra; in __sctp_mtu_payload() local
579 overhead += sp->pf->af->net_header_len; in __sctp_mtu_payload()
581 overhead += sizeof(struct udphdr); in __sctp_mtu_payload()
583 overhead += sizeof(struct ipv6hdr); in __sctp_mtu_payload()
586 if (WARN_ON_ONCE(mtu && mtu <= overhead)) in __sctp_mtu_payload()
587 mtu = overhead; in __sctp_mtu_payload()
589 return mtu ? mtu - overhead : overhead; in __sctp_mtu_payload()
|
| /linux-6.8/fs/ext4/ |
| D | resize.c | 109 ext4_grpblk_t overhead; in ext4_group_overhead_blocks() local
110 overhead = ext4_bg_num_gdb(sb, group); in ext4_group_overhead_blocks()
112 overhead += 1 + in ext4_group_overhead_blocks()
114 return overhead; in ext4_group_overhead_blocks()
129 unsigned overhead; in verify_group_input() local
141 overhead = ext4_group_overhead_blocks(sb, group); in verify_group_input()
142 metaend = start + overhead; in verify_group_input()
143 free_blocks_count = input->blocks_count - 2 - overhead - in verify_group_input()
315 unsigned overhead; in ext4_alloc_group_tables() local
333 overhead = ext4_group_overhead_blocks(sb, src_group); in ext4_alloc_group_tables()
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| /linux-6.8/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
|