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neoppod
Commit d28d7cef authored by Kirill Smelkov's avatar Kirill Smelkov
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go/NOTES-go
View file @ d28d7cef
...@@ -3,6 +3,20 @@ ...@@ -3,6 +3,20 @@
? random access -> mmap ? random access -> mmap
- scheduler won't use free P if a G is taking time and other Gs are queued after it on the same P:
https://groups.google.com/forum/#!topic/golang-nuts/8KYER1ALelg
e870f06c (runtime: yield time slice to most recently readied G)
ea0386f8 (runtime: improve randomized stealing logic)
4bb491b1 (runtime: improve scheduler fairness)
/s steal
findrunnable
runqsteal
? runqgrab
schedule <- top entry
https://golang.org/s/go11sched -> syscall/M partking and Unparking/Spinning
---------------------------------------- ----------------------------------------
- TODO stats for events (packets received, errors, etc) - TODO stats for events (packets received, errors, etc)
......
go/neo/connection_test.go
View file @ d28d7cef
...@@ -36,6 +36,8 @@ import ( ...@@ -36,6 +36,8 @@ import (
"github.com/kylelemons/godebug/pretty" "github.com/kylelemons/godebug/pretty"
"github.com/pkg/errors" "github.com/pkg/errors"
"runtime"
) )
func xclose(c io.Closer) { func xclose(c io.Closer) {
...@@ -721,11 +723,9 @@ func TestHandshake(t *testing.T) { ...@@ -721,11 +723,9 @@ func TestHandshake(t *testing.T) {
// ---- benchmarks ---- // ---- benchmarks ----
// rtt over chan - for comparision as base // rtt over chan - for comparision as base
func BenchmarkChanRTT(b *testing.B) { func benchmarkChanRTT(b *testing.B, c12, c21 chan byte) {
c12 := make(chan byte)
c21 := make(chan byte)
go func() { go func() {
runtime.LockOSThread()
for { for {
c, ok := <-c12 c, ok := <-c12
if !ok { if !ok {
...@@ -748,6 +748,15 @@ func BenchmarkChanRTT(b *testing.B) { ...@@ -748,6 +748,15 @@ func BenchmarkChanRTT(b *testing.B) {
close(c12) close(c12)
} }
func BenchmarkSyncChanRTT(b *testing.B) {
benchmarkChanRTT(b, make(chan byte), make(chan byte))
}
func BenchmarkBufChanRTT(b *testing.B) {
benchmarkChanRTT(b, make(chan byte, 1), make(chan byte, 1))
}
// rtt over net.Conn Read/Write // rtt over net.Conn Read/Write
func benchmarkNetConnRTT(b *testing.B, c1, c2 net.Conn) { func benchmarkNetConnRTT(b *testing.B, c1, c2 net.Conn) {
buf1 := make([]byte, 1) buf1 := make([]byte, 1)
......
go/todo.dot
View file @ d28d7cef
...@@ -10,11 +10,24 @@ digraph { ...@@ -10,11 +10,24 @@ digraph {
Sgo -> load_serial_next; Sgo -> load_serial_next;
Sgo -> Sgo_speed; Sgo -> Sgo_speed;
Sgo_speed -> Mmap_go;
Sgo_speed -> sha1_index;
//Sgo_speed -> B_link_recv; //Sgo_speed -> B_link_recv;
Sgo_speed -> garbage; Sgo_speed -> garbage;
Sgo_speed -> gosched; //Sgo_speed -> gosched;
Sgo_speed -> diskio;
Sgo_speed -> ConnClose_notimer;
Sgo_speed -> QSgo_speed;
QSgo_speed -> Mmap_go;
QSgo_speed -> sha1_index;
garbage -> pktbuf_alloc;
garbage -> msg_alloc;
garbage -> conn_alloc;
diskio -> gosched;
diskio -> GOMAXPROCS;
Cpy_r_Sgo -> Sgo; Cpy_r_Sgo -> Sgo;
//Cpy_r_Sgo -> Protog_fix; //Cpy_r_Sgo -> Protog_fix;
...@@ -33,12 +46,13 @@ digraph { ...@@ -33,12 +46,13 @@ digraph {
Mgo [label=<M<sub>go</sub>> style=filled fillcolor=lightyellow]; Mgo [label=<M<sub>go</sub>> style=filled fillcolor=lightyellow];
SCgo_t [label=<S<sub>go</sub> / C<sub>go</sub> tests> style=filled fillcolor=lightyellow]; SCgo_t [label=<S<sub>go</sub> / C<sub>go</sub> tests> style=filled fillcolor=lightyellow];
Sgo_speed [label=<S<sub>go</sub> speed/latency>]; Sgo_speed [label=<S<sub>go</sub> speed/latency>];
Cpy_r_Sgo [label=<C<sub>py</sub> read S<sub>go</sub>>]; Cpy_r_Sgo [label=<C<sub>py</sub> read S<sub>go</sub>> style=filled fillcolor=lightyellow];
Cgo_r_Sgo [label=<C<sub>go</sub> read S<sub>go</sub>>]; Cgo_r_Sgo [label=<C<sub>go</sub> read S<sub>go</sub>> style=filled fillcolor=lightyellow];
Cgo_r_Spy [label=<C<sub>go</sub> read S<sub>py</sub>>]; Cgo_r_Spy [label=<C<sub>go</sub> read S<sub>py</sub>> style=filled fillcolor=lightyellow];
Cleanup [label="Cleanup history"]; Cleanup [label="Cleanup history"];
Post [label="Post"];
//Cpy_patch [label=<py patch: ConnID py=go> style=filled fillcolor=lightyellow]; // C<sub>py</sub> patch for ConnID interop. with S<sub>go</sub>>]; //Cpy_patch [label=<py patch: ConnID py=go> style=filled fillcolor=lightyellow]; // C<sub>py</sub> patch for ConnID interop. with S<sub>go</sub>>];
Mmap_go [label="io.ReaderAt via mmap"]; Mmap_go [label="? io.ReaderAt via mmap"];
//Protog_fix [label="proto(go/py) compat fix" style=filled fillcolor=lightyellow]; //Protog_fix [label="proto(go/py) compat fix" style=filled fillcolor=lightyellow];
//Mpy_vs_Sgo [label=<M<sub>py</sub> vs S<sub>go</sub>: try/fix> style=filled fillcolor=lightyellow]; //Mpy_vs_Sgo [label=<M<sub>py</sub> vs S<sub>go</sub>: try/fix> style=filled fillcolor=lightyellow];
...@@ -52,4 +66,14 @@ digraph { ...@@ -52,4 +66,14 @@ digraph {
//Cgo -> Cgo_tasks; //Cgo -> Cgo_tasks;
//Cgo_tasks [label="- talkMaster\n- update nodeTab/partTab\n- dial S on demand\n..." style=filled fillcolor=lightyellow]; //Cgo_tasks [label="- talkMaster\n- update nodeTab/partTab\n- dial S on demand\n..." style=filled fillcolor=lightyellow];
QSgo_speed [label=<?>];
pktbuf_alloc [label=<PktBuf>];
msg_alloc [label=<Msg>];
conn_alloc [label=<Conn>];
ConnClose_notimer [label="Conn.Close\nno timer"];
diskio [label="disk io"];
GOMAXPROCS [label="? GOMAXPROCS"];
} }
go/todo.svg
View file @ d28d7cef
...@@ -4,184 +4,260 @@ ...@@ -4,184 +4,260 @@
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<g id="edge11" class="edge"><title>Sgo_speed&#45;&gt;ConnClose_notimer</title>
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<polygon fill="black" stroke="black" points="586.053,-134.94 588.902,-124.735 580.311,-130.936 586.053,-134.94"/>
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<!-- QSgo_speed -->
<g id="node11" class="node"><title>QSgo_speed</title>
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<text text-anchor="start" x="750.742" y="-95.1701" font-family="Times,serif" font-size="14.00">?</text>
</g>
<!-- Sgo_speed&#45;&gt;QSgo_speed -->
<g id="edge12" class="edge"><title>Sgo_speed&#45;&gt;QSgo_speed</title>
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<!-- pktbuf_alloc -->
<g id="node14" class="node"><title>pktbuf_alloc</title>
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<text text-anchor="start" x="299.742" y="-14.3" font-family="Times,serif" font-size="14.00">PktBuf</text>
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<!-- garbage&#45;&gt;pktbuf_alloc -->
<g id="edge15" class="edge"><title>garbage&#45;&gt;pktbuf_alloc</title>
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<text text-anchor="start" x="147.742" y="-14.3" font-family="Times,serif" font-size="14.00">Msg</text>
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<!-- garbage&#45;&gt;msg_alloc -->
<g id="edge16" class="edge"><title>garbage&#45;&gt;msg_alloc</title>
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<polygon fill="black" stroke="black" points="188.916,-34.1085 178.668,-31.4211 185.003,-39.9129 188.916,-34.1085"/>
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<!-- conn_alloc -->
<g id="node16" class="node"><title>conn_alloc</title>
<ellipse fill="none" stroke="black" cx="235.242" cy="-18" rx="29.795" ry="18"/>
<text text-anchor="start" x="220.242" y="-14.3" font-family="Times,serif" font-size="14.00">Conn</text>
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<!-- garbage&#45;&gt;conn_alloc -->
<g id="edge17" class="edge"><title>garbage&#45;&gt;conn_alloc</title>
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<g id="node9" class="node"><title>sha1_index</title> <g id="node17" class="node"><title>gosched</title>
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</g> </g>
<!-- Sgo_speed&#45;&gt;sha1_index --> <!-- diskio&#45;&gt;gosched -->
<g id="edge10" class="edge"><title>Sgo_speed&#45;&gt;sha1_index</title> <g id="edge18" class="edge"><title>diskio&#45;&gt;gosched</title>
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<!-- garbage --> <!-- GOMAXPROCS -->
<g id="node10" class="node"><title>garbage</title> <g id="node18" class="node"><title>GOMAXPROCS</title>
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<text text-anchor="middle" x="607.242" y="-14.3" font-family="Times,serif" font-size="14.00">garbage</text> <text text-anchor="middle" x="451.242" y="-14.3" font-family="Times,serif" font-size="14.00">? GOMAXPROCS</text>
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<!-- Sgo_speed&#45;&gt;garbage --> <!-- diskio&#45;&gt;GOMAXPROCS -->
<g id="edge11" class="edge"><title>Sgo_speed&#45;&gt;garbage</title> <g id="edge19" class="edge"><title>diskio&#45;&gt;GOMAXPROCS</title>
<path fill="none" stroke="black" d="M564.798,-72.055C571.708,-63.4175 580.234,-52.7599 587.827,-43.2681"/> <path fill="none" stroke="black" d="M487.71,-81.5281C481.503,-70.8854 473.275,-56.7779 466.206,-44.6568"/>
<polygon fill="black" stroke="black" points="590.682,-45.3022 594.196,-35.307 585.216,-40.9293 590.682,-45.3022"/> <polygon fill="black" stroke="black" points="469.14,-42.74 461.078,-35.8652 463.093,-46.2667 469.14,-42.74"/>
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<!-- gosched --> <!-- Mmap_go -->
<g id="node11" class="node"><title>gosched</title> <g id="node12" class="node"><title>Mmap_go</title>
<ellipse fill="none" stroke="black" cx="730.242" cy="-18" rx="66.0889" ry="18"/> <ellipse fill="none" stroke="black" cx="926.242" cy="-18" rx="98.5829" ry="18"/>
<text text-anchor="middle" x="730.242" y="-14.3" font-family="Times,serif" font-size="14.00">? go scheduling</text> <text text-anchor="middle" x="926.242" y="-14.3" font-family="Times,serif" font-size="14.00">? io.ReaderAt via mmap</text>
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<!-- QSgo_speed&#45;&gt;Mmap_go -->
<g id="edge13" class="edge"><title>QSgo_speed&#45;&gt;Mmap_go</title>
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<polygon fill="black" stroke="black" points="883.93,-42.2524 891.561,-34.9027 881.012,-35.8894 883.93,-42.2524"/>
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<!-- sha1_index -->
<g id="node13" class="node"><title>sha1_index</title>
<ellipse fill="none" stroke="black" cx="754.242" cy="-18" rx="55.4913" ry="18"/>
<text text-anchor="middle" x="754.242" y="-14.3" font-family="Times,serif" font-size="14.00">? sha1 index</text>
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<!-- Sgo_speed&#45;&gt;gosched --> <!-- QSgo_speed&#45;&gt;sha1_index -->
<g id="edge12" class="edge"><title>Sgo_speed&#45;&gt;gosched</title> <g id="edge14" class="edge"><title>QSgo_speed&#45;&gt;sha1_index</title>
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<polygon fill="black" stroke="black" points="686.128,-40.0093 694.166,-33.1076 683.578,-33.4901 686.128,-40.0093"/> <polygon fill="black" stroke="black" points="757.742,-46.0802 754.242,-36.0802 750.742,-46.0803 757.742,-46.0802"/>
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<!-- Cpy_r_Sgo --> <!-- Cpy_r_Sgo -->
<g id="node12" class="node"><title>Cpy_r_Sgo</title> <g id="node19" class="node"><title>Cpy_r_Sgo</title>
<ellipse fill="none" stroke="black" cx="228.242" cy="-234" rx="61.99" ry="18"/> <ellipse fill="lightyellow" stroke="black" cx="228.242" cy="-323.74" rx="61.99" ry="18"/>
<text text-anchor="start" x="188.742" y="-231.3" font-family="Times,serif" font-size="14.00">C</text> <text text-anchor="start" x="188.742" y="-321.04" font-family="Times,serif" font-size="14.00">C</text>
<text text-anchor="start" x="198.742" y="-231.3" font-family="Times,serif" baseline-shift="sub" font-size="14.00">py</text> <text text-anchor="start" x="198.742" y="-321.04" font-family="Times,serif" baseline-shift="sub" font-size="14.00">py</text>
<text text-anchor="start" x="211.742" y="-231.3" font-family="Times,serif" font-size="14.00"> &#160;read S</text> <text text-anchor="start" x="211.742" y="-321.04" font-family="Times,serif" font-size="14.00"> &#160;read S</text>
<text text-anchor="start" x="254.742" y="-231.3" font-family="Times,serif" baseline-shift="sub" font-size="14.00">go</text> <text text-anchor="start" x="254.742" y="-321.04" font-family="Times,serif" baseline-shift="sub" font-size="14.00">go</text>
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<!-- Cpy_r_Sgo&#45;&gt;Sgo --> <!-- Cpy_r_Sgo&#45;&gt;Sgo -->
<g id="edge13" class="edge"><title>Cpy_r_Sgo&#45;&gt;Sgo</title> <g id="edge20" class="edge"><title>Cpy_r_Sgo&#45;&gt;Sgo</title>
<path fill="none" stroke="black" d="M251.357,-217.291C267.071,-206.611 287.912,-192.447 304.367,-181.264"/> <path fill="none" stroke="black" d="M251.357,-307.031C267.071,-296.351 287.912,-282.187 304.367,-271.004"/>
<polygon fill="black" stroke="black" points="306.693,-183.915 312.997,-175.399 302.759,-178.126 306.693,-183.915"/> <polygon fill="black" stroke="black" points="306.693,-273.655 312.997,-265.139 302.759,-267.866 306.693,-273.655"/>
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<!-- Cgo_r_Sgo --> <!-- Cgo_r_Sgo -->
<g id="node13" class="node"><title>Cgo_r_Sgo</title> <g id="node20" class="node"><title>Cgo_r_Sgo</title>
<ellipse fill="none" stroke="black" cx="318.242" cy="-378" rx="61.99" ry="18"/> <ellipse fill="lightyellow" stroke="black" cx="318.242" cy="-467.74" rx="61.99" ry="18"/>
<text text-anchor="start" x="278.742" y="-375.3" font-family="Times,serif" font-size="14.00">C</text> <text text-anchor="start" x="278.742" y="-465.04" font-family="Times,serif" font-size="14.00">C</text>
<text text-anchor="start" x="288.742" y="-375.3" font-family="Times,serif" baseline-shift="sub" font-size="14.00">go</text> <text text-anchor="start" x="288.742" y="-465.04" font-family="Times,serif" baseline-shift="sub" font-size="14.00">go</text>
<text text-anchor="start" x="301.742" y="-375.3" font-family="Times,serif" font-size="14.00"> &#160;read S</text> <text text-anchor="start" x="301.742" y="-465.04" font-family="Times,serif" font-size="14.00"> &#160;read S</text>
<text text-anchor="start" x="344.742" y="-375.3" font-family="Times,serif" baseline-shift="sub" font-size="14.00">go</text> <text text-anchor="start" x="344.742" y="-465.04" font-family="Times,serif" baseline-shift="sub" font-size="14.00">go</text>
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<!-- Cgo_r_Sgo&#45;&gt;Cgo --> <!-- Cgo_r_Sgo&#45;&gt;Cgo -->
<g id="edge14" class="edge"><title>Cgo_r_Sgo&#45;&gt;Cgo</title> <g id="edge21" class="edge"><title>Cgo_r_Sgo&#45;&gt;Cgo</title>
<path fill="none" stroke="black" d="M340.479,-361.116C355.251,-350.565 374.702,-336.671 390.197,-325.603"/> <path fill="none" stroke="black" d="M340.479,-450.856C355.251,-440.305 374.702,-426.411 390.197,-415.343"/>
<polygon fill="black" stroke="black" points="392.241,-328.445 398.344,-319.784 388.172,-322.749 392.241,-328.445"/> <polygon fill="black" stroke="black" points="392.241,-418.185 398.344,-409.524 388.172,-412.489 392.241,-418.185"/>
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<!-- Cgo_r_Sgo&#45;&gt;Sgo --> <!-- Cgo_r_Sgo&#45;&gt;Sgo -->
<g id="edge15" class="edge"><title>Cgo_r_Sgo&#45;&gt;Sgo</title> <g id="edge22" class="edge"><title>Cgo_r_Sgo&#45;&gt;Sgo</title>
<path fill="none" stroke="black" d="M319.284,-359.849C321.532,-322.832 326.857,-235.181 329.578,-190.386"/> <path fill="none" stroke="black" d="M319.284,-449.589C321.532,-412.572 326.857,-324.921 329.578,-280.126"/>
<polygon fill="black" stroke="black" points="333.082,-190.426 330.195,-180.232 326.095,-190.002 333.082,-190.426"/> <polygon fill="black" stroke="black" points="333.082,-280.166 330.195,-269.973 326.095,-279.742 333.082,-280.166"/>
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<!-- Cgo_r_Spy --> <!-- Cgo_r_Spy -->
<g id="node14" class="node"><title>Cgo_r_Spy</title> <g id="node21" class="node"><title>Cgo_r_Spy</title>
<ellipse fill="none" stroke="black" cx="459.242" cy="-378" rx="61.99" ry="18"/> <ellipse fill="lightyellow" stroke="black" cx="459.242" cy="-467.74" rx="61.99" ry="18"/>
<text text-anchor="start" x="419.742" y="-375.3" font-family="Times,serif" font-size="14.00">C</text> <text text-anchor="start" x="419.742" y="-465.04" font-family="Times,serif" font-size="14.00">C</text>
<text text-anchor="start" x="429.742" y="-375.3" font-family="Times,serif" baseline-shift="sub" font-size="14.00">go</text> <text text-anchor="start" x="429.742" y="-465.04" font-family="Times,serif" baseline-shift="sub" font-size="14.00">go</text>
<text text-anchor="start" x="442.742" y="-375.3" font-family="Times,serif" font-size="14.00"> &#160;read S</text> <text text-anchor="start" x="442.742" y="-465.04" font-family="Times,serif" font-size="14.00"> &#160;read S</text>
<text text-anchor="start" x="485.742" y="-375.3" font-family="Times,serif" baseline-shift="sub" font-size="14.00">py</text> <text text-anchor="start" x="485.742" y="-465.04" font-family="Times,serif" baseline-shift="sub" font-size="14.00">py</text>
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<!-- Cgo_r_Spy&#45;&gt;Cgo --> <!-- Cgo_r_Spy&#45;&gt;Cgo -->
<g id="edge16" class="edge"><title>Cgo_r_Spy&#45;&gt;Cgo</title> <g id="edge23" class="edge"><title>Cgo_r_Spy&#45;&gt;Cgo</title>
<path fill="none" stroke="black" d="M448.833,-360.055C443.559,-351.469 437.058,-340.888 431.254,-331.439"/> <path fill="none" stroke="black" d="M448.833,-449.795C443.559,-441.209 437.058,-430.628 431.254,-421.179"/>
<polygon fill="black" stroke="black" points="434.182,-329.518 425.965,-322.829 428.217,-333.182 434.182,-329.518"/> <polygon fill="black" stroke="black" points="434.182,-419.258 425.965,-412.57 428.217,-422.922 434.182,-419.258"/>
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<!-- Cleanup --> <!-- Cleanup -->
<g id="node15" class="node"><title>Cleanup</title> <g id="node22" class="node"><title>Cleanup</title>
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<text text-anchor="middle" x="606.242" y="-374.3" font-family="Times,serif" font-size="14.00">Cleanup history</text> <text text-anchor="middle" x="606.242" y="-464.04" font-family="Times,serif" font-size="14.00">Cleanup history</text>
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<!-- Post -->
<g id="node23" class="node"><title>Post</title>
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<text text-anchor="middle" x="718.242" y="-464.04" font-family="Times,serif" font-size="14.00">Post</text>
</g> </g>
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</svg> </svg>
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