On Fri, Mar 01, 2019 at 06:58:32PM +0300, Alexey Budankov wrote: SNIP
> +static size_t record__zstd_compress(void *data, void *dst, size_t dst_size, > + void *src, size_t src_size) > +{ > + size_t compressed; > + struct perf_session *session = data; > + /* maximum size of record data size (2^16 - 1 - header) */ > + const size_t max_record_size = (1 << 8 * sizeof(u16)) - I dont follow this calculation, could you just use PERF_SAMPLE_MAX_SIZE? jirka > + 1 - sizeof(struct compressed_event); > + SNIP