pts/dbench vs system/dbench

[tytso]

Nope, and I *still* don't use libtool. Libtool, as far as I'm concern, only slows down compile times, and is an unmitigated disaster in terms of the...

[tytso]

Libc4 and Libc5 were both based on a fork of glibc version 1. So there wasn't the pain caused by the differences of glibc version 1 (forked for Linux)...

[tytso]

Correction: Orphan_file is not a mount option, but rather a file system feature that requires a development version of e2fsprogs. The orphan file provides...

[tytso]

No on-disk format changes are needed to use this feature. What is required is a device which supports the discard / trim operation; and the security...

[tytso]

Hmm, so one the problems is that the first time I ran it, the first hint of trouble was when I ran "phoronix-test-suite batch-run fs-benmarks"...

[tytso]

I'm trying to figure out why dbench wasn't run in my local/fs-benchmark test suite. It was working previously; but now it's being silently skipped....

[tytso]

Great, thanks! I'll take a look in the next day or two, once I have a chance to build a new test appliance image which uses the PTS from a git tree....

[tytso]

Oops, please use get_metadata_value_with_retries above:

[email protected]:~# echo $(basename $(get_metadata_value_with_retries machine-type))
...

[tytso]

The file system features can be extracted from "dumpe2fs -h <block device>" for all ext4 file systems. For that matter, saving the full...

[tytso]

Thanks, that's really helpful. One other question. I'm looking to add to disk details the ext4 file system features that are enabled, since the primary...

[tytso]

I want to be able to run "phoronix-test-suite batch-run local/fs-benchmarks" from a shell script, and I want to specify the result file and...

[tytso]

As I said above, the reason why we do is because if userspace sets one or more of the inode's timestamps to a timespec value (using the utimesat(2) system...

[tytso]

The reason why ext4 and xfs both use nanosecond resolution is because in the kernel the high precision time keeping structure is the timespec structure...

[tytso]

FWIW, I wasn't able to replicate the performance delta using upstream kernels, running on a Google Compute Engine VM, machtype n1-highcpu-8, using a GCE...

[tytso]

Move along, there's nothing to see here.

My comments are here:

https://plus.google.com/117091380454...025/posts/Jmpc...