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The linux packet socket can handle GSO packets, so we can segment packets to
64K instead of the MTU which is usually 1500.
Here are numbers for the nginx-1m test:
runsc: 579330.01 [Kbytes/sec] received
runsc-gso: 1794121.66 [Kbytes/sec] received
runc: 2122139.06 [Kbytes/sec] received
and for tcp_benchmark:
$ tcp_benchmark --duration 15 --ideal
[ 4] 0.0-15.0 sec 86647 MBytes 48456 Mbits/sec
$ tcp_benchmark --client --duration 15 --ideal
[ 4] 0.0-15.0 sec 2173 MBytes 1214 Mbits/sec
$ tcp_benchmark --client --duration 15 --ideal --gso 65536
[ 4] 0.0-15.0 sec 19357 MBytes 10825 Mbits/sec
PiperOrigin-RevId: 240809103
Change-Id: I2637f104db28b5d4c64e1e766c610162a195775a
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PiperOrigin-RevId: 240681675
Change-Id: Ib214106e303669fca2d5c744ed5c18e835775161
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PiperOrigin-RevId: 240657604
Change-Id: Ida15dee83337867c560427eae0b4b9ce1051dbb8
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PiperOrigin-RevId: 240642903
Change-Id: I16625015123a827d267d60b328a202057264bbd6
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The start time is the number of clock ticks between the boot time and
application start time.
PiperOrigin-RevId: 240619475
Change-Id: Ic8bd7a73e36627ed563988864b0c551c052492a5
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Fixes: https://github.com/google/gvisor/issues/143
Fixes #143
PiperOrigin-RevId: 240600719
Change-Id: Id1731b9969f98e32e52e144a6643e12b0b70f168
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PiperOrigin-RevId: 240600504
Change-Id: I7dd5f27c8da31f24b68b48acdf8f1c19dbd0c32d
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This is so that CC_FLAGS will be resolved properly.
After the --incompatible_disable_genrule_cc_toolchain_dependency flag is
flipped, Bazel will no longer be providing CC_FLAGS to genrule by default.
PiperOrigin-RevId: 240595715
Change-Id: I067334051e89f7ec006a6b6b3d2f4188911ac2db
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This is the same technique used by Go's strings.Builder
(https://golang.org/src/strings/builder.go#L45), and for the same
reason. (We can't just use strings.Builder because there's no way to get
the underlying []byte to pass to usermem.IO.CopyIn.)
PiperOrigin-RevId: 240594892
Change-Id: Ic070e7e480aee53a71289c7c120850991358c52c
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This reduces the number of FDs used for writable files.
#149
PiperOrigin-RevId: 240502097
Change-Id: Ib44489f65bce23dd1a995f620d69e65dce003f7c
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PiperOrigin-RevId: 240483396
Change-Id: Ie75d3ae38af83f1d92f167ff9ba58fa10f5b372b
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PiperOrigin-RevId: 240462667
Change-Id: I3d1c5c0d80a3badced963ae1d450c20ed8a767ed
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This is a preparation for GSO changes (cl/234508902).
RELNOTES[gofers]: Refactor checksum code to include length, which
it already did, but in a convoluted way. Should be a no-op.
PiperOrigin-RevId: 240460794
Change-Id: I537381bc670b5a9f5d70a87aa3eb7252e8f5ace2
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Memfds are simply anonymous tmpfs files with no associated
mounts. Also implementing file seals, which Linux only implements for
memfds at the moment.
PiperOrigin-RevId: 240450031
Change-Id: I31de78b950101ae8d7a13d0e93fe52d98ea06f2f
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bazel 0.24.0 isn't compatible with bazel_0.20.0 configs:
(10:32:27) ERROR:
bazel_toolchains/configs/ubuntu16_04_clang/1.1/bazel_0.20.0/default/BUILD:57:1:
no such attribute 'dynamic_runtime_libs' in 'cc_toolchain' rule
PiperOrigin-RevId: 240436868
Change-Id: Iee68c9b79d907ca2bdd124386aaa77c786e089ce
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Mirror the ICMPv6 echo implementation in ICMPv4 echo. This removes
unnecessary asynchrony, reduces copying, and reduces complexity.
PiperOrigin-RevId: 240394525
Change-Id: If8f53254154f86772f5e51159765aa23b3b328b8
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PiperOrigin-RevId: 240224782
Change-Id: Iab4e4e7047b2d022f15e807c2348685d8e972020
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MM.insertPMAsLocked() passes vma.maxPerms to memmap.Mappable.Translate
(although it unsets AccessType.Write if the vma is private). This
somewhat simplifies handling of pmas, since it means only COW-break
needs to replace existing pmas. However, it also means that a MAP_SHARED
mapping of a file opened O_RDWR dirties the file, regardless of the
mapping's permissions and whether or not the mapping is ever actually
written to with I/O that ignores permissions (e.g.
ptrace(PTRACE_POKEDATA)).
To fix this:
- Change the pma-getting path to request only the permissions that are
required for the calling access.
- Change memmap.Mappable.Translate to take requested permissions, and
return allowed permissions. This preserves the existing behavior in the
common cases where the memmap.Mappable isn't
fsutil.CachingInodeOperations and doesn't care if the translated
platform.File pages are written to.
- Change the MM.getPMAsLocked path to support permission upgrading of
pmas outside of copy-on-write.
PiperOrigin-RevId: 240196979
Change-Id: Ie0147c62c1fbc409467a6fa16269a413f3d7d571
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ilist:generic_list works faster than ilist:ilist.
Here is a beanchmark test to measure performance of epoll_wait, when readyList
isn't empty. It shows about 30% better performance with these changes.
Benchmark Time(ns) CPU(ns) Iterations
Before:
BM_EpollAllEvents 46725 46899 14286
After:
BM_EpollAllEvents 33167 33300 18919
PiperOrigin-RevId: 240185278
Change-Id: I3e33f9b214db13ab840b91613400525de5b58d18
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PiperOrigin-RevId: 239896221
Change-Id: I0949981fe50c57131c5631cdeb10b225648575c0
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PiperOrigin-RevId: 239803092
Change-Id: I42d612ed6a889e011e8474538958c6de90c6fcab
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Change the DPL from 0 to 3 for Breakpoint and Overflow,
then user space could trigger Breakpoint and Overflow
as excepected.
Change-Id: Ibead65fb8c98b32b7737f316db93b3a8d9dcd648
PiperOrigin-RevId: 239736648
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PiperOrigin-RevId: 239718991
Change-Id: Idc78557a8e9bfdd3cb7d8ec4db708364652640a4
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PiperOrigin-RevId: 239714368
Change-Id: I35860b880a1d8885eb8c2d4ff267caaf72d91088
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Also, changing queue.writeBuf from a buffer.Bytes to a [][]byte should reduce
copying and reallocating of slices.
PiperOrigin-RevId: 239713547
Change-Id: I6ee5ff19c3ee2662f1af5749cae7b73db0569e96
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.net sets these flags to -1 and then uses their result, especting it to be
zero.
Does not set actual flags (e.g. MSG_TRUNC), but setting to zero is more correct
than what we did before.
PiperOrigin-RevId: 239657951
Change-Id: I89c5f84bc9b94a2cd8ff84e8ecfea09e01142030
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https://github.com/google/gvisor/pull/132
PiperOrigin-RevId: 239641377
Change-Id: I7ba6b57730800cc98496c83cb643e70ec902ed3d
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A credential object is immutable, so we don't need to copy it for a new
task.
PiperOrigin-RevId: 239519266
Change-Id: I0632f641fdea9554779ac25d84bee4231d0d18f2
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Track new sockets created during accept(2) in the socket table for all
families. Previously we were only doing this for unix domain sockets.
PiperOrigin-RevId: 239475550
Change-Id: I16f009f24a06245bfd1d72ffd2175200f837c6ac
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PiperOrigin-RevId: 239425816
Change-Id: I3b1479c61b4222c3931a416c4efc909157044330
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PiperOrigin-RevId: 239417224
Change-Id: I14a9adc31a6330a79a6156c105969cd5f1f63d20
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See: https://tools.ietf.org/html/rfc6691#section-2
PiperOrigin-RevId: 239305632
Change-Id: Ie8eb912a43332e6490045dc95570709c5b81855e
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PiperOrigin-RevId: 239221041
Change-Id: Icc19e32a00fa89167447ab2f45e90dcfd61bea04
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PiperOrigin-RevId: 239194420
Change-Id: Ie193e8ac2b7a6db21195ac85824a335930483971
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In the case of a rename replacing an existing destination inode, ramfs
Rename failed to first remove the replaced inode. This caused:
1. A leak of a reference to the inode (making it live indefinitely).
2. For directories, a leak of the replaced directory's .. link to the
parent. This would cause the parent's link count to incorrectly
increase.
(2) is much simpler to test than (1), so that's what I've done.
agentfs has a similar bug with link count only, so the Dirent layer
informs the Inode if this is a replacing rename.
Fixes #133
PiperOrigin-RevId: 239105698
Change-Id: I4450af2462d8ae3339def812287213d2cbeebde0
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Properly handle propagation options for root and mounts. Now usage of
mount options shared, rshared, and noexec cause error to start. shared/
rshared breaks sandbox=>host isolation. slave however can be supported
because changes propagate from host to sandbox.
Root FS setup moved inside the gofer. Apart from simplifying the code,
it keeps all mounts inside the namespace. And they are torn down when
the namespace is destroyed (DestroyFS is no longer needed).
PiperOrigin-RevId: 239037661
Change-Id: I8b5ee4d50da33c042ea34fa68e56514ebe20e6e0
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PiperOrigin-RevId: 239031539
Change-Id: I783127d0287a647d21de40c301c5a5c2e62b7640
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PiperOrigin-RevId: 239026571
Change-Id: Ifd01674855094f3abad497776f418023452033a1
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PiperOrigin-RevId: 239016776
Change-Id: Ia7af4258e7c69b16a4630a6f3278aa8e6b627746
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PiperOrigin-RevId: 238704915
Change-Id: I9f38162b27b4f401446593865bb857eb280ae426
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PiperOrigin-RevId: 238474202
Change-Id: Ib8c431e973e8cf1e1c8ee2f8c1978ddb8e88b0b8
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PiperOrigin-RevId: 238467634
Change-Id: If4cd8efff7386fbee1195f051d15549b495910a9
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This is in preparation for improved page cache reclaim, which requires
greater integration between the page cache and page allocator.
PiperOrigin-RevId: 238444706
Change-Id: Id24141b3678d96c7d7dc24baddd9be555bffafe4
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p9.Twalk.handle() with a non-empty path also stats the walked-to path
anyway, so the preceding GetAttr is completely wasted.
PiperOrigin-RevId: 238440645
Change-Id: I7fbc7536f46b8157639d0d1f491e6aaa9ab688a3
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PiperOrigin-RevId: 238360231
Change-Id: I5eaf8d26f8892f77d71c7fbd6c5225ef471cedf1
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PiperOrigin-RevId: 238336475
Change-Id: I8131e04699028246ebc233953ebb3feca5673940
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Previous memory allocation was excessive (80 MB). Changed
it to use 2 MB instead. There is no drop in perfomance due
to this change:
ab -n 100 -c 10 http://server/latin10m.txt ==> 10 MB file
80 MB: 178 MB/s
2 MB: 181 MB/s
PiperOrigin-RevId: 238321594
Change-Id: I1c8aed13cad5d75f4506d2b406b305117055fbe5
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Signed-off-by: Bin Lu <bin.lu@arm.com>
mpratt@google.com: matched against just x86_64, since that's all we care about.
Change-Id: I1320ef31cef6517bf6121a933cc105f2ac548ec8
PiperOrigin-RevId: 238294240
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gonet.PacketConn now implements net.Conn, allowing it to be returned from
net.Dial.Dialer functions.
PiperOrigin-RevId: 238111980
Change-Id: I174884385ff4d9b8e9918fac7bbb5b93ca366ba7
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HandleLocal is very similar conceptually to MULTICAST_LOOP, so we can unify
the implementations. This has the benefit of making HandleLocal apply even when
the fdbased link endpoint isn't in use.
In addition, move looping logic to route creation so that it doesn't need to be
run for each packet. This should improve performance.
PiperOrigin-RevId: 238099480
Change-Id: I72839f16f25310471453bc9d3fb8544815b25c23
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