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2017-07-02contentenc: MergeBlocks: short-circuit the trivial caseJakob Unterwurzacher
Saves 3% for the tar extract benchmark because we skip the allocation.
2017-07-02fusefrontend: doRead: skip decryption for an empty readJakob Unterwurzacher
Previously we ran through the decryption steps even for an empty ciphertext slice. The functions handle it correctly, but returning early skips all the extra calls. Speeds up the tar extract benchmark by about 4%.
2017-07-01README: update mac os x support status to "beta"Jakob Unterwurzacher
2017-07-01profiling: add tar-extract helperJakob Unterwurzacher
Extracts the linux-3.0.tar.gz tarball while capturing memory and cpu profiles.
2017-07-01Travis CI: update to latest stable Go point releasesJakob Unterwurzacher
2017-07-01main: get rid of magic "MaxWrite: 1048576" constantJakob Unterwurzacher
go-fuse caps MaxWrite at MAX_KERNEL_WRITE anyway, and we actually depend on this behavoir now as the byte pools are sized according to MAX_KERNEL_WRITE. So let's use MAX_KERNEL_WRITE explicitely.
2017-07-01Update performance.txt with new resultsJakob Unterwurzacher
Massive speed boost for streaming reads.
2017-07-01stupidgcm: add test for in-place OpenJakob Unterwurzacher
Adds a test for the optimization introduced in: stupidgcm: Open: if "dst" is big enough, use it as the output buffer
2017-06-30contentenc: add PReqPool and use it in DecryptBlocksJakob Unterwurzacher
This gets us a massive speed boost in streaming reads.
2017-06-30stupidgcm: Open: if "dst" is big enough, use it as the output bufferJakob Unterwurzacher
This means we won't need any allocation for the plaintext.
2017-06-30fusefrontend: doRead: use CReqPool for ciphertext bufferJakob Unterwurzacher
Easily saves lots of allocations.
2017-06-30fusefrontend: Read: use provided bufferJakob Unterwurzacher
This will allow us to return internal buffers to a pool.
2017-06-29Update performance.txt with new numbersJakob Unterwurzacher
2017-06-29contentenc: add safer "bPool" pool variant; add pBlockPoolJakob Unterwurzacher
bPool verifies the lengths of slices going in and out. Also, add a plaintext block pool - pBlockPool - and use it for decryption.
2017-06-29profiling: fix hardcoded path in hintJakob Unterwurzacher
2017-06-29Update performance.txt with new numbersJakob Unterwurzacher
2017-06-29stupidgcm: use "dst" as the output buffer it is big enoughJakob Unterwurzacher
This saves an allocation of the ciphertext block.
2017-06-27benchmarks: add streaming read benchmarkJakob Unterwurzacher
2017-06-24profiling: add streaming read profiling helperJakob Unterwurzacher
Reads 1GB of zeros while collecting memory and cpu profiles.
2017-06-20Update performance numbersJakob Unterwurzacher
2017-06-20contentenc: use sync.Pool memory pools for encryptionJakob Unterwurzacher
We use two levels of buffers: 1) 4kiB+overhead for each ciphertext block 2) 128kiB+overhead for each FUSE write (32 ciphertext blocks) This commit adds a sync.Pool for both levels. The memory-efficiency for small writes could be improved, as we now always use a 128kiB buffer.
2017-06-20README: update changelog for v1.4v1.4Jakob Unterwurzacher
2017-06-20MANPAGE: reorder options to match "-hh" output; add "-hkdf", "-trace"Jakob Unterwurzacher
2017-06-20build.bash: use plain "git describe" for go-fuseJakob Unterwurzacher
go-fuse recently added a git tag - let's use it.
2017-06-18profiling: add streaming-write profiling helperJakob Unterwurzacher
Writes 1GB of zeros to a gocryptfs mount while collecting cpu and memory profiles.
2017-06-18main, syscallcompat: use Dup3 instead of Dup2Jakob Unterwurzacher
Dup2 is not implemented on linux/arm64. Fixes https://github.com/rfjakob/gocryptfs/issues/121 . Also adds cross-compilation to CI.
2017-06-11Add performance numbers for v1.3-69-ge52594dJakob Unterwurzacher
2017-06-11contentenc: parallelize encryption for 128kiB writesJakob Unterwurzacher
128kiB = 32 x 4kiB pages is the maximum we get from the kernel. Splitting up smaller writes is probably not worth it. Parallelism is limited to two for now.
2017-06-11Add performance numbers for last changeJakob Unterwurzacher
Slight streaming write improvement.
2017-06-11cryptocore: prefetch nonces in the backgroundJakob Unterwurzacher
Spawn a worker goroutine that reads the next 512-byte block while the current one is being drained. This should help reduce waiting times when /dev/urandom is very slow (like on Linux 3.16 kernels).
2017-06-11benchmark.bash: add dd-only mode, enable via "-dd"Jakob Unterwurzacher
Allows for quickly testing the streaming write throughput.
2017-06-09performance.txt: add numbers for latest changeJakob Unterwurzacher
Also, get rid of the half-empty line.
2017-06-09cryptocore: prefetch nonces in 512-byte blocksJakob Unterwurzacher
On my machine, reading 512-byte blocks from /dev/urandom (same via getentropy syscall) is a lot faster in terms of throughput: Blocksize Throughput 16 28.18 MB/s 512 83.75 MB/s For a single-threaded streaming write, this drops the CPU usage of nonceGenerator.Get to almost 1/3: flat flat% sum% cum cum% Before 0 0% 95.08% 0.35s 2.92% github.com/rfjakob/gocryptfs/internal/cryptocore.(*nonceGenerator).Get After 0.01s 0.092% 92.34% 0.13s 1.20% github.com/rfjakob/gocryptfs/internal/cryptocore.(*nonceGenerator).Get This change makes the nonce reading single-threaded, which may hurt massively-parallel writes.
2017-06-09Fix missing Owner coercion for already-open files (#117)Charles Duffy
2017-06-07cryptocore: remove lastNonce checkJakob Unterwurzacher
This check would need locking to be multithreading-safe. But as it is in the fastpath, just remove it. rand.Read() already guarantees that the value is random.
2017-06-07contentenc: move EncryptBlocks() loop into its own functionsJakob Unterwurzacher
This allows easy parallelization in the future.
2017-06-07Add "-trace" flag (record execution trace)Jakob Unterwurzacher
Uses the runtime/trace functionality. TODO: add to man page.
2017-06-07main: reorder force_owner flag parsingJakob Unterwurzacher
No functional changes, just keeping the profiling-related flags together.
2017-06-04Add "package-static.bash" helper scriptJakob Unterwurzacher
Creates a tar.gz with a static build of gocryptfs and the man page.
2017-06-04Remove obsolete TODO.mdJakob Unterwurzacher
This file has been obsolete for some time, TODOs are no longer tracked here but on github.
2017-06-01golint: get rid of underscore warnings for good.Jakob Unterwurzacher
We got another warning for force_other: cli_args.go:26:45: don't use underscores in Go names; struct field force_owner should be forceOwner Use a broader grep.
2017-06-01fusefrontend: write: consolidate and move encryption to contentencJakob Unterwurzacher
Collect all the plaintext and pass everything to contentenc in one call. This will allow easier parallization of the encryption. https://github.com/rfjakob/gocryptfs/issues/116
2017-06-01Don't cap GOMAXPROCS at 4.Jakob Unterwurzacher
Before Go 1.5, GOMAXPROCS defaulted to 1, hence it made sense to unconditionally increase it to 4. But since Go 1.5, GOMAXPROCS defaults to the number of cores, so don't keep it from increasing above 4. Also, update the performance numbers.
2017-06-01Fix two commentsJakob Unterwurzacher
One out-of-date and the other with a typo.
2017-06-01main: increase max write size to maximumJakob Unterwurzacher
Previously, it was at the go-fuse default of 64KiB. Getting bigger writes should increase throughput somewhat. Testing on tmpfs shows an improvement from 112MiB/s to 120MiB/s.
2017-06-01Implement force_owner option to display ownership as a specific user.Charles Duffy
2017-05-31pathiv: fix test failure on Go 1.6Jakob Unterwurzacher
Travis failed on Go 1.6.3 with this error: internal/pathiv/pathiv_test.go:20: no args in Error call This change should solve the problem and provides a better error message on (real) test failure.
2017-05-30main: add "-info" optionJakob Unterwurzacher
Pretty-prints the config while stripping out sensitive (and uninteresting) data https://github.com/rfjakob/gocryptfs/issues/111
2017-05-30README: update changelog with short help textJakob Unterwurzacher
2017-05-30main: add short help textJakob Unterwurzacher
We have accumulated so many options over time that they no longer fit on the screen. Display only a useful subset of options to the user unless they pass "-hh".