[pmg-devel] [PATCH v2 pmg-log-tracker] rewrite in rust

[Mira Limbeck]

Memory usage was way too high (1.8G for the testcase, while the C log 
tracker used 150M).

With the new changes it is now at ~190M and requires less time. 
Especially system time is now lower than the C version.

Will send a v3 soon.

On 11/6/19 8:13 AM, Dietmar Maurer wrote:
> memory usage would also be interesting ...
>
> Also, why is system time higher in rust??
>
>> On 5 November 2019 19:04 Thomas Lamprecht <t.lamprecht at proxmox.com> wrote:
>>
>>   
>> On 11/5/19 4:58 PM, Mira Limbeck wrote:
>>> Some simple benchmarks: (32 syslog files (syslog to syslog.31.gz))
>>>
>>> Rust: (median of 5 runs + 1 for cache)
>>> sudo pmg-log-tracker -s "2018-01-01 00:00:00" -vv > /dev/null  11.68s user 0.74s system 99% cpu 12.421 total
>>> sudo pmg-log-tracker -s "2018-01-01 00:00:00" -v > /dev/null  9.89s user 0.64s system 99% cpu 10.531 total
>>>
>>> C: (same as for the rust version)
>>> sudo pmg-log-tracker -s "2018-01-01 00:00:00" -vv > /dev/null  11.83s user 0.32s system 99% cpu 12.147 total
>>> sudo pmg-log-tracker -s "2018-01-01 00:00:00" -v > /dev/null  10.58s user 0.24s system 99% cpu 10.821 total
>>>
>> what about the benchmark environment? Where caches dropped in-between?
>>
>> Was a memory-backed tempfs for the backing "storage" tested also? To
>> have a comparison which is for sure not IO limited?
>>
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