Cloudphysic block trace origin format

[haomactracy]

Hi，can you provide Cloudphysic block trace origin format, i want to analyze it, but i cannot find the way to download a Cloudphsic block trace with offset and length.
Thank you so much!

[1a1a11a]

Hi @haomactracy, you can download them here https://ftp.pdl.cmu.edu/pub/datasets/twemcacheWorkload/.cphy/

[1a1a11a]

Hi @haomactracy , since you study the offset and length, there is another dataset from Meta that you might be interested
https://cachelib.org/docs/Cache_Library_User_Guides/Cachebench_FB_HW_eval/#list-of-traces

[haomactracy]

Thank you so much，i download the trace with vscsitrace Binary file，can you give me some information about how to get the offset and length from the trace？Thanks

[1a1a11a]

libCacheSim does not have the tool to print it, but take a look at vscsi.c and https://man.openbsd.org/vscsi.4

[haomactracy]

Thanks，but i have one question，that is，when i find the data structure of vscsi and print the trace(length and offset),
typedef struct {
uint32_t sn;
uint32_t len;
uint32_t nSG;
uint16_t cmd;
uint16_t ver;
uint64_t lbn;
uint64_t ts;
} trace_v1_record_t;
which element represents read or write
i found that the simulator do not use the op(w or r), thanks for explaination!